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2022-04-08 Sigma 40mm f/1.4 DG HSM Art: Sharp with Gorgeous bokeh, a Steal for Sony Mirrorless

2021-09-25 Sigma SL 28mm f/1.4 DG HSM Art Aperture Series, Leica SL2 vs Panasonic S1R Sharpness: Desert Sagebrush

2021-09-08 Shootout: Leica 28/2 APO-Summicron-SL vs Leica 28/1.4 Summilux-M, Leica 28/2 Summicron-M, Sigma 28/1.4 DG HSM Art: Popcorn and Pumpkins (Leica SL2)

2021-09-08 Four 28mm Lenses on Leica SL2: a Dumpster Fire and a Gem

2021-03-17 Sony A1 Human Eye AF with/without Eyeglasses, Wide-Open and Stopped-Down

2020-09-27 Evaluating Focus Shift with the Sigma FE 28mm f/1.4 DG HSM Art

2020-09-04 Testing Soon: Sigma FE 28mm f/1.4 DG DN Art — Very High Performance and a Steal at $1049 — $350 off

2020-05-17 Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: View Over Alabama Hills to Wind Driven Snow on Whitney Range (Sony A7R IV)

2020-05-12 Sigma FE 105mm f/1.4 DG HSM Art Examples: Mixed Lighting over Western Alabama Hills (Sony A7R IV)

2020-05-08 Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: View Over Alabama Hills to Wind Driven Snow on Whitney Range (Sony A7R IV)

Sony FE 135mm f/1.4 GM

Top-grade telephoto..

  1. Shootout: Sony 135mm f/1.8 GM vs Sigma 135mm f/1.8 DG HSM Art (Mosaic)

Sigma FE 14mm f/1.8 DG HSM Art

Outstanding fast wide angle, DSLR optical design..

  1. Overview of Sigma FE 14mm f/1.8 DG HSM Art
  2. Aperture Series: Ancient Downed Pine Tree, Dana Meadow
  3. Aperture Series: Hiker at Upper Conness Lake
  4. Aperture Series: Water Polished Granite
  5. Aperture Series: Tenaya Canyon Pool
  6. Aperture Series: Lingering Snow near Upper Conness Lake

Sigma FE 28mm f/1.4 DG HSM Art

Outstanding wide angle, watch out for lens skew..

  1. Overview of Sigma FE 28mm f/1.8 DG HSM Art
  2. MTF
  3. Vignetting
  4. Distortion
  5. Focus Shift

Sigma FE 85mm f/1.4 DG DN Art

Ultra high performance medium telephoto..

  1. Overview of Sigma 85mm f/1.4 DG DN Art
  2. MTF for Sigma 85mm f/1.4 DG DN Art
  3. Distortion
  4. Distortion Correction Impact on Micro Contrast and Sharpness
  5. Micro Contrast, Moiré, Color Aliasing with/without Pixel Shift and Distortion Correction
  6. Aperture Series: Frog on Table
  7. Aperture Series: Glass Vase
  8. Aperture Series: Kitchen Countertop
  9. Aperture Series, Close Range: Dolls (with and without Distortion Correction)
  10. Aperture Series: Last Yellow Aspen at Edge Of Beaver Pond
  11. Aperture Series: Campito the Feral Stallion Grazing in Blue Dusk
  12. Aperture Series: Mining Hoist
  13. Aperture Series: Earth Shadow Rising Over Crooked Creek Research Station
  14. 3-Way Shootout: Crooked Creek Canyon View to White Mountain Peak
  15. Sigma 85mm f/1.4 DG DN Art: Conclusions

Sigma FE 105mm f/1.4 DG HSM Art

Highly corrected medium telephoto..

  1. Overview of Sigma 105mm f/1.4 DG HSM Art
  2. Flare Control
  3. Examples: Lee Vining Canyon
  4. Examples: Alabama Hills
  5. Examples at Wide Apertures: Mule Deer at Dawn
  6. Examples at Wide Apertures: Flora at Sunrise
  7. Examples: Death Valley Area
  8. Aperture Series: Aspen-Lined Road at Dusk
  9. Aperture Series: Aspen Amid Willow Brush at Dusk
  10. Aperture Series: White Aspen Trunks, Wide View
  11. Aperture Series: White Aspen Trunks, Close View
  12. Aperture Series: Stars Over Mt Whitney, Pre-Dawn Deep Blue Sky
  13. Aperture Series: View Over Alabama Hills to Wind Driven Snow on Whitney Range

Sigma FE 135mm f/1.8 DG HSM Art

Outstanding fast wide angle, DSLR optical design..

  1. Overview of Sigma FE 135mm f/1.8 DG HSM Art
  2. Aperture Series: Ducks in Dana Meadow Pond at Dusk
  3. Shootout: Sigma 135mm f/1.8 DG HSM Art vs Sony 135mm f/1.8 GM (Mosaic)

Sony FE 12-24mm f/2.8 GM

Fast extreme wide angle zoom..

  1. Shootout @ 24mm: Sony FE 12-24mm f/2.8 GM vs Zeiss Loxia 25mm f/2.4 vs Sigma FE 14-24mm f/2.8 DG DN Art: Brilliant Backlit Beaver Pond Meadow

Zeiss Loxia 25mm f/2.4 Distagon

Outstanding wide angle, superb performer..

  1. Shootout @ 24mm: Zeiss Loxia 25mm f/2.4 vs Sony FE 12-24mm f/2.8 GM vs Sigma FE 14-24mm f/2.8 DG DN Art: Brilliant Backlit Beaver Pond Meadow

Sigma L-Mount

Sigma 28mm f/1.4 DG HSM Art.

  1. Aperture Series, Leica SL2 vs Panasonic S1R Sharpness: Desert Sagebrush
  2. Shootout: Leica 28/2 APO-Summicron-SL vs Leica 28/1.4 Summilux-M, Leica 28/2 Summicron-M, Sigma 28/1.4 DG HSM Art: Popcorn and Pumpkins (Leica SL2)

Leica 28mm f/2 APO-Summicron-SL ASPH

Fast short wide angle lens for L-Mount cameras..

  1. Shootout: Leica 28/2 APO-Summicron-SL vs Leica 28/1.4 Summilux-M, Leica 28/2 Summicron-M, Sigma 28/1.4 DG HSM Art: Popcorn and Pumpkins (Leica SL2)

Nikon AF-S NIKKOR 70-200mm f/2.8E FL ED VR

Nikon’s finest 70-200 zoom as of 2017..

  1. vs Sigma 135mm f/1.8 DG HSM Art (White Flowers, Nikon D810)
  2. vs Sigma 135mm f/1.8 DG HSM Art (Cerro Gordo Bunkhouse, Nikon D810)

Canon 24mm f/2.8 IS USM

Canon’s compact high-performance 24mm prime..

  1. Canon 24/2.8 vs 11-24/4L, 24/1.4L II, and Sigma 24/1.4 Art (Canon 5D Mark II)

Sigma 12-24mm f/4 DG HSM Art

Fast constant-aperture ultrawide zoom..

  1. Sigma 12-24mm f/4 DG HSM Art
  2. Aperture Series @ 12mm: Sunlight on the Beaver Pond
  3. Aperture Series @ 14mm: Two Aspen
  4. Aperture Series @20mm: Forest Stream
  5. Examples: Eastern Sierra (Nikon D810)

Sigma 14-24mm f/2.8 DG HSM Art

Superwide optimized zoom lens..

  1. Sigma 14-24mm f/2.8 DG HSM Art
  2. Aperture Series @ 14mm: Checkerboard Mesa, Zion
  3. Aperture Series @ 14mm: Sand Dunes Junction, Mesquite Dunes, Death Valley
  4. Aperture Series @ 17mm: Cracked Mud Patterns in Sand Dunes to Distant Peaks at Sunrise, Death Valley
  5. Aperture Series @ 19mm: Snake Tracks on Rippled Dunes, Death Valley
  6. Aperture Series @ 20mm: Flowering Creosote Bush in Sand Dunes, Figure on Dune, Death Valley
  7. Aperture Series @ 22mm: Rising Sun Strafing Bedded Sandstone, Zion
  8. Aperture Series @ 22mm: Across the Canyon View of Checkerboard Mesa, Zion
  9. Aperture Series @ 23mm: Sandy Wash in Side Canyon, Zion
  10. Aperture Series @ 23mm: Dead Brush Closeup in Cottonwood Canyon Wash
  11. Aperture Series @ 24mm: Flowering Creosote Bush
  12. Aperture Series @ 24mm: Lloyd on Bleached Aspen Log

Sigma 24-35mm f/2 DG HSM Art

Mid-range optimized groundbreaking f/2 zoom..

  1. Sigma 24-35mm f/2 DG HSM Art
  2. Distortion @ 24mm, Corrected vs Uncorrected
  3. Distortion @ 35mm, Corrected vs Uncorrected
  4. Panorama: Oneida Lake (Nikon D810, 14 frames)
  5. Shootout: vs Sigma 24-105mm f/4A: Colorful Creek
  6. Shootout: vs Sigma 35/1.4A: Cottonwood Canyon Rancher’s Cabin
  7. Shootout: vs Sigma 35/1.4A: Aspen With Rust-Colored Trunk
  8. Aperture Series @ 24mm: Rocky Outcrop and Aspen Fall Color

Sigma 24-70mm f/2.8 DG HSM Art

High performance mid-range zoom..

  1. Overview of Sigma 24-70mm f/2.8 DG HSM Art
  2. Examples: Alabama Hills
  3. Aperture Series @ 24mm: Alabama Hills Rainstorm Creek
  4. Aperture Series @ 40mm: Alabama Hills Creek Canyon
  5. Aperture Series @ 70mm: Alabama Hills View to Snow-Covered White Mountains

Sigma 24-105mm f/4 DG HSM Art

Wide angle to telephoto all purpose zoom..

  1. Sigma 24-105mm f/4 DG HSM Art
  2. Examples: Eastern Sierra (Nikon D810)
  3. Shootout: vs Sigma 24-35mm f/2A: Colorful Creek

Sigma 14mm f/1.8 DG HSM Art

A whopping 4/3 stop faster than other lenses in its range..

  1. Overview of Sigma 14mm f/1.8 DG HSM Art
  2. Aperture Series: Clearing Storm Over Pywiack Dome
  3. Aperture Series: Slush Ice on Shallow Pond
  4. Aperture Series + Focus Stack: Dead and Live Aspen, Dusk
  5. Aperture Series + Focus Stack: Precocious Cluster of Yellow Aspen Leaves
  6. Focus Stack: Two Aspen at Beaver Pond, Sunset
  7. Aperture Series: View to High Peaks from Chickenfoot Lake, Sunset
  8. Aperture Series + Focus Stack: Boulder View to Sub-Peak of Mt Conness
  9. Examples: Eastern Sierra

Sigma 20mm f/1.4 DG HSM Art

The fastest extreme wide angle yet..

  1. Overview of Sigma 20mm f/1.4 DG HSM Art
  2. MTF for Sigma 20mm f/1.4 DG HSM Art
  3. Vignetting for Sigma 20mm f/1.4 DG HSM Art
  4. Distortion for Sigma 20mm f/1.4 DG HSM Art + Examples
  5. Field Curvature
  6. Aperture Series: Late Season Pomegranates (Canon 5DS R)
  7. Aperture Series: Grumpy Toad (Canon 5DS R)
  8. Aperture Series: Decomposing Pumpkins (Canon 5DS R)
  9. Aperture Series: Leaves, Fence and Backlit Tree (Canon 5DS R)
  10. Aperture Series: Pescadero Creek (Canon 5DS R)

Sigma 24mm f/1.4 DG HSM Art

Sigma’s fast high performance wide angle..

  1. Sigma 24mm f/1.4 DG HSM Art
  2. MTF for Sigma 24mm f/1.4 DG HSM Art
  3. Vignetting for Sigma 24mm f/1.4 DG HSM Art
  4. Distortion for Sigma 24mm f/1.4 DG HSM Art
  5. Examples: Mt Conness Watershed (Canon 5DS R)
  6. Aperture Series: Bird of Paradise Flower (Canon 5DM3)
  7. Aperture Series: Magenta Flower (Canon 5DM3)
  8. Aperture Series: California Poppy (Canon 5DM3)
  9. Aperture Series: Extreme Backlighting, Cherry Blossoms (Canon 5DM3)
  10. Aperture Series: Buckeye Leaves (Canon 5DM3)
  11. Aperture Series: Peach Blossoms (Canon 5DM3)
  12. Aperture Series: Glistening Rocks and Running Water (Nikon D810)
  13. Aperture Series: Water Wears Its Way (Nikon D810)
  14. Aperture Series: Huge Barn Interior (Nikon D810)
  15. Aperture Series: Collapsed Ranch House at Sunset (Nikon D810)
  16. Aperture Series: Defunct Ranch Buildings at Sunset (Nikon D810)
  17. Aperture Series: Huge Barn Interior (Nikon D810)
  18. Aperture Series: Checking for Lens Symmetry, Bristlecone on Bare Hill (Canon 5DS R)
  19. Shootout: Sigma 24/1.4 Art vs Canon 24/1.4L II, 24/2.8 IS, 11-12/4L (Bench, Canon 5DM3)
  20. Shootout: Sigma 24/1.4 Art vs Canon 24/1.4L II, 24/2.8 IS, 24-70/2.8L II, 11-12/4L (Pescadero Creek, Canon 5DM3)
  21. Shootout: Sigma 24/1.4 Art vs Nikon AF-S 24/1.4G (Dolls, NikonD810)

Sigma 28mm f/1.4 DG HSM Art

Extraordinary optical efforts for outstanding performance..

  1. Overview of Sigma 28mm f/1.8 DG HSM Art
  2. MTF
  3. Vignetting
  4. Distortion
  5. White Balance and Tint — Huge Difference Wide Open vs Stopped Down
  6. Examples: Dusk, Night, and Astrophotography
  7. Examples: Alabama Hills
  8. Aperture Series: Alabama Hills, Late Dusk
  9. Aperture Series: View to Mt Whitney Peaks From Alabama Hills, Very Late Dusk
  10. Aperture Series: Road Grader, Alabama Hills
  11. Aperture Series: Orange Poppies

Sigma 35mm f/1.4 DG HSM Art

Sigma’s fast and affordable moderate excellent wide angle..

  1. Sigma 35mm f/1.4 DG HSM (Art Series)
  2. Flare
  3. Distortion
  4. Distortion vs Sigma 24-35mm f/2A, Corrected vs Uncorrected (Cabin)
  5. Shootout: vs Sigma 24-35mm f/2A: Cottonwood Canyon Rancher’s Cabin
  6. Compared vs Canon 35mm f/1.4L (Dolls, Canon 5DM3)
  7. Examples (Alpine Creek, Canon 5DM3)
  8. Compared to Canon 35/1.4L (Oak Trunks, Canon 5DM3)
  9. Compared to Canon 35/1.4L (Manzanita Flowers, Canon 5DM3)
  10. Compared to Canon 35/1.4L (Gate, Canon 5DM3)
  11. Compared to Canon 35/1.4L (Pots, Canon 5DM3)
  12. Compared to Nikon AF-S 35mm f/1.4G (Dolls, Nikon D800E)
  13. Compared to Nikon AF-S 35mm f/1.4G (Summit Building, Nikon D800E)
  14. Autofocus Calibration vs Nikon 35/1.4G (Lens Align, Nikon D800E)
  15. 'Soft Eyes' Portraits BEFORE Fine Focus Adjust (Nikon D800E)
  16. Portraits AFTER Fine Focus Adjust (Nikon D800E)
  17. Aperture Series: Sprinkler Controls (Nikon D800E)
  18. Aperture Series: White/Green Beater Bike (Nikon D800E)
  19. Aperture Series: Red Beater Bike (Nikon D800E)
  20. Lens Skew (Nikon D800E)
  21. Lens Skew Confirmation (Nikon D800E)
  22. Conclusions

Sigma 40mm f/1.4 DG HSM Art

Extraordinary optical efforts for outstanding performance..

  1. Overview of Sigma 40mm f/1.4 DG HSM Art
  2. MTF
  3. Vignetting
  4. Distortion
  5. Flare
  6. Focus Shift
  7. Aperture Series: Laws Railroad Museum Locomotive
  8. Aperture Series: Painted Rock (Focus Shift Study)
  9. Aperture Series: Green Chairs at Sunset, Laws Railroad Museum
  10. Aperture Series: Blowing Snow on High Peaks
  11. Examples: Laws Railroad Museum
  12. Examples: Lundy Canyon Portraits
  13. Aperture Series: Mining Gears
  14. Aperture Series: Sprinter by Moonlight

Sigma 50mm f/1.4 DG HSM Art

Sigma’s fast high performance normal lens..

  1. Sigma 50mm f/1.4 DG HSM A (Art Series)
  2. MTF for Sigma 50mm f/1.4 DG HSM A
  3. Optical Construction of Sigma 50/1.4A
  4. Distortion of Sigma 50/1.4A
  5. Sigma 50/1.4A: Color Correction and LOCA, Implications
  6. Sigma 50/1.4A vs Canon 50/1.2L and 50/1.4 (5D Mark III, Dolls)
  7. Sigma 50/1.4A vs Canon 50/1.2L and 50/1.4 (5D Mark III, Decorated Bike)
  8. Sigma 50/1.4A vs Nikon 50/1.4G, 50/1.8G (Nikon D810, Decorated Bike)
  9. Aperture Series: Backlit Bristlecones (5D Mark III)
  10. Aperture Series: Wyman Cabin (5D Mark III)
  11. Near/Far Focus Series: Tuolumne River Cascade (5D Mark III)

Sigma 85mm f/1.4 DG HSM Art

Sigma’s best portrait lens..

  1. Sigma 85mm f/1.4 DG HSM Art
  2. MTF for Sigma 85mm f/1.4 DG HSM Art
  3. Aperture Series: Extreme Adverse Lighting: Saddlebag Lake Reflections (Nikon D810)
  4. Aperture Series: Peaks by Moonlight (Nikon D810)
  5. Shootout: Sigma 85/1.4A vs Zeiss Milvus 85/1.4 vs Nikon 85/1.4G (Lundy Beaver Ponds, Nikon D810)
  6. Aperture Series: View Over Conness Creek Drainage to Saddlebag Lake (Nikon D850)
  7. Shootout: Sigma 85/1.4A vs Zeiss Milvus 85/1.4 vs Nikon 85/1.4G (Snowy Spur of Mt Conness, Nikon D810)
  8. Shootout: Sigma 85/1.4A (Two Samples) vs Zeiss Milvus 85/1.4 (Siemens Chart, Nikon D810)
  9. Examples: Eastern Sierra (Nikon D810)
  10. Examples, Focus Stacking: Eastern Sierra (Nikon D850)

Sigma 105mm f/1.4 DG HSM Art

Extraordinary optical efforts for class-leading performance?.

  1. Overview of Sigma 105mm f/1.8 DG HSM Art
  2. Examples: Portraits
  3. Examples: Various
  4. Assessing Focus Shift @ ~1.5m: Picnic Table Wooden Surface
  5. Color Shift When Stopping Down, SpyderCHECKR Card
  6. Color Shift When Stopping Down, Field Examples at Dusk
  7. Color Shift When Stopping Down, Field Example, Warm Sunlight
  8. Aperture Series: Mt Conness Green Meadow, Dusk
  9. Aperture Series: Monitor Pass Area, Sunset View to Northwest
  10. Aperture Series: Monitor Pass Area, Sunset View to North
  11. Aperture Series: Last Glow On Lichen Encrusted Dome
  12. Aperture Series: White Rock Near Dead Pine

Sigma 135mm f/1.8 DG HSM Art

Fastest 135mm lens yet, with ultra high performance..

  1. Overview of Sigma 135mm f/1.8 DG HSM Art
  2. MTF for Sigma 135mm f/1.8A
  3. Distortion, Uncorrected and Corrected at Distance
  4. Distortion, Uncorrected and Corrected at Close Range
  5. Aperture Series: Birds Eye View of Patriarch Grove (Nikon D850)
  6. Aperture Series: Mosaic (Nikon D810)
  7. Aperture Series: Rodin Burghers of Calais, with focus stack (Nikon D810)
  8. Aperture Series: Glass Sculpture (Nikon D810)
  9. Aperture Series: Hotel Cerro Gordo, Deep Dusk (Nikon D810)
  10. Examples: Autofocus Accuracy (Nikon D810)
  11. Examples: Eastern Sierra (Nikon D850)
  12. vs Nikon 70-200mm f/2.8 FL ED VR (White Flowers, Nikon D810)
  13. Aperture Series: Quad at Dusk (Nikon D810)
  14. Aperture Series: Pink Flowers (Nikon D810)
  15. Aperture Series: American Hotel, Cerro Gordo (Nikon D810)
  16. Aperture Series: View Over Conness Creek Drainage to Saddlebag Lake (Nikon D850)
  17. Aperture Series: Trees Clinging to Barren North Rocky Face (Nikon D850)
  18. Aperture Series: Pescadero Creek (Nikon D810)
  19. Aperture Series: Grass Stems in Blue Boulder (Nikon D810)
  20. Aperture Series: Mid-Creek Boulder (Nikon D810)
  21. Aperture Series: Pescadero Creek Downstream (Nikon D810)
  22. vs Nikon 70-200/2.8E FL ED VR (Cerro Gordo Bunkhouse, Nikon D810)

Sigma 50mm f/1.4 EX DG HSM on Canon EOS 1Ds Mark III

The Sigma 50mm f/1.4 is a worthy contender in the crowded 50mm area. See how it performs compared to the Canon EF 50/1.4 and EF 50/1.2L..

  1. Introduction
  2. Ergonomics
  3. Focus accuracy
  4. Exposure accuracy
  5. Ghosting and veiling flare
  6. Field illumination (vignetting)
  7. Bokeh
  8. Field curvature
  9. Modulation Transfer Function (MTF)
  10. Examples
  11. Conclusions

Canon 24mm f/1.4L II

State of the art design in a fast ultra wide angle lens..

  1. Canon 24/1.4L II vs 11-24/4L, 24/2.8 IS, and Sigma 24/1.4 Art (Canon 5DM3)

Canon EF 11-24mm f/4L USM

Extreme wide angle zoom..

  1. Canon 11-24/4L vs 24/1.4L II, 24/2.8 IS, and Sigma 24/1.4 Art (Canon 5D Mark II)

Nikon AF-S 35mm f/1.4G

State of the art design in a fast 35mm lens..

  1. vs 35/1.8G (D800E, Pescadero Creek Close)

Nikon AF-S 35mm f/1.8G

Relatively inexpensive alternative to the pro 35/1.4G..

  1. vs Sigma 35mm f/1.4 DG HSM (D800E, Pescadero Creek Close)

Nikon AF-S 105mm f/1.4E ED

Nikon’s best-ever f/1.4 lens?.

  1. Nikon 105/1.4E vs Sigma 24-105/4 Art: Fall Color Along Creek

Optical Behavior (Case Studies)

Illuminating examples of lens behavior..

  1. Lens Skew (Nikon D800E, Sigma 35/1.4)

Milvus 100mm f/2M

The classic 100/2 Makro-Planar improved..

  1. Color Correction Shootout vs Sigma 105/1.4A, Nikon 105/2 DC

35mm f/1.4 Distagon

Strokes of a master..

  1. vs Sigma 35/1.4 and Nikon 35/1.4G (Nikon D800E, Dolls)
  2. vs Sigma 35/1.4 and Nikon 35/1.4G (Nikon D800E, Wheel)
  3. vs Sigma 35/1.4 (Nikon D800E, Boulder Logjam)

35mm f/2 Distagon

Balance and poise..

  1. vs 35/1.4 Distagon and Sigma 35/1.4 (D800E, Creek Storm Damage)

Otus 28mm f/1.4 APO-Distagon

Fast high performance APO wide angle..

  1. Shootout: Zeiss Otus 28/1.4 vs Sigma 28/1.4A: Alabama Hills Creek to White Mountains

135mm f/2 APO-Sonnar

Beautiful bokeh, razor sharp, superb color correction..

  1. vs Sigma 135mm f/1.8 Art and Nikon 70-200mm f/2.8 FL ED VR: White Flowers (Nikon D810)
  2. vs Sigma 135mm f/1.8 Art: Pink Flowers (Nikon D810)

Leica M Typ 240 Compared To APS-C Cameras

Relative sharpness and performance vs APS-C cameras..

  1. M240 + 50/2 APO ASPH vs Nikon D7100 + Sigma 35/1.4 DG HSM A

Blog posts, reverse chronological

2022

2022-04-08 Sigma 40mm f/1.4 DG HSM Art: Sharp with Gorgeous bokeh, a Steal for Sony Mirrorless

2021

2021-09-25 Sigma SL 28mm f/1.4 DG HSM Art Aperture Series, Leica SL2 vs Panasonic S1R Sharpness: Desert Sagebrush

2021-09-08 Shootout: Leica 28/2 APO-Summicron-SL vs Leica 28/1.4 Summilux-M, Leica 28/2 Summicron-M, Sigma 28/1.4 DG HSM Art: Popcorn and Pumpkins (Leica SL2)

2021-09-08 Four 28mm Lenses on Leica SL2: a Dumpster Fire and a Gem

2021-03-17 Sony A1 Human Eye AF with/without Eyeglasses, Wide-Open and Stopped-Down

2020

2020-09-27 Evaluating Focus Shift with the Sigma FE 28mm f/1.4 DG HSM Art

2020-09-04 Testing Soon: Sigma FE 28mm f/1.4 DG DN Art — Very High Performance and a Steal at $1049 — $350 off

2020-05-17 Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: View Over Alabama Hills to Wind Driven Snow on Whitney Range (Sony A7R IV)

2020-05-12 Sigma FE 105mm f/1.4 DG HSM Art Examples: Mixed Lighting over Western Alabama Hills (Sony A7R IV)

2020-05-08 Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: View Over Alabama Hills to Wind Driven Snow on Whitney Range (Sony A7R IV)

2020-05-06 Sigma FE 105mm f/1.4 DG HSM Art Wide Aperture Examples: Flora at Sunrise (Sony A7R IV)

2020-05-06 Sigma FE 105mm f/1.4 DG HSM Art Wide Aperture Examples: Deer At Dawn (Sony A7R IV)

2020-04-27 Sigma FE 105mm f/1.4 DG HSM Art for Sony Mirrorless: On Sale TODAY ONLY

2020-04-01 Sigma FE 105mm f/1.4 DG HSM Art Examples: Alabama Hills (Sony A7R IV)

2020-03-25 Sigma FE 105mm f/1.4 DG HSM Art Examples: Alabama Hills (Sony A7R IV)

2020-03-25 Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: Stars Over Mt Whitney, Pre-Dawn Deep Blue Sky (Sony A7R IV)

2020-03-16 Sigma FE 105mm f/1.4 DG HSM Art Examples: Alabama Hills (Sony A7R IV)

2020-03-05 Sigma FE 105mm f/1.4 DG HSM Art Examples: Lee Vining Canyon (Sony A7R IV)

2020-03-05 Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: White Aspen Trunks (Sony A7R IV)

2020-03-05 Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: Aspen-Lined Road at Dusk (Sony A7R IV)

2020-03-05 Sigma FE 105mm f/1.4 DG HSM Art Aperture Series: Aspen Amid Willow Brush at Dusk (Sony A7R IV)

2020-01-07 Sigma 40mm f/1.4 DG HSM Art is an outstanding lens with beautiful bokeh — $400 off today only

2019

2019-05-19 Shootout: Sony 135mm f/1.8 GM vs Sigma 135mm f/1.8 DG HSM Art (Mosaic, Sony A7R III)

2019-03-18 Sigma 28mm f/1.4 DG HSM Aperture Series: Road Grader, Alabama Hills (Nikon D850)

2019-03-18 Sigma 28mm f/1.4 DG HSM Aperture Series: Orange Poppies (Nikon D850)

2019-03-13 Sigma 24-70mm f/2.8 DG HSM Art Aperture Series @ 24mm: Alabama Hills Rainstorm Creek (Nikon D850)

2019-03-08 Sigma 24-70mm f/2.8 DG HSM Art Aperture Series @ 24mm: Alabama Hills Rainstorm Creek (Nikon D850)

2019-03-07 Sigma 28mm f/1.4 DG HSM: Substantial Difference in White Balance / Tint for f/1.4 vs Stopped-Down (Nikon D850)

2019-03-07 Shootout: Zeiss Otus 28/1.4 vs Sigma 28/1.4A: Alabama Hills Creek to White Mountains (Nikon D850)

2019-03-06 Sigma 28mm f/1.4 DG HSM Art Examples: Astrophotography (Nikon D850)

2019-03-06 Sigma 28mm f/1.4 DG HSM Aperture Series: View of Peaks near Mt Whitney, Very Late Dusk (Nikon D850)

2019-03-06 Sigma 24-70mm f/2.8 DG HSM Art Aperture Series @ 24mm: Alabama Hills Rainstorm Creek (Nikon D850)

2019-03-05 Sigma 28mm f/1.4 DG HSM Art Aperture Series: Alabama Hills, Dusk (Nikon D850)

2019-03-04 Camping in Alabama Hills (Late Dusk Shot with Sigma 28mm f/1.4 DG HSM Art), UPDATED with Reader Comment

2019-02-27 Sigma 28mm f/1.4 DG HSM Art in for Review

2019-02-26 Reader Comment: Panasonic S1R and its L-Mount Lens Choices Including Sigma DG HSM Art Lenses

2019-02-25 Sigma Announces 11 Lenses for L-Mount (Panasonic S1 and Panasonic S1R) + Reader Comments

2019-02-05 Sigma 40mm f/1.4 DG HSM Art Aperture Series: Green Chairs at Sunset, Laws Railroad Museum (Nikon Z7)

2019-02-04 Sigma 40mm f/1.4 DG HSM Art Examples: Lundy Canyon Portraits (Nikon D850)

2019-02-03 Sigma 40mm f/1.4 DG HSM Art Aperture Series: Blowing Snow on High Peaks (Nikon D850)

2019-01-31 Sigma 40mm f/1.4 DG HSM Art Aperture Series: Sprinter by Moonlight

2019-01-31 Sigma 40mm f/1.4 DG HSM Art Aperture Series: Mining Gears (Nikon Z7)

2019-01-20 Sigma 40mm f/1.4 DG HSM Art Aperture Series: Painted Rock (Nikon D850)

2019-01-14 Sigma 40mm f/1.4 DG HSM Art Examples: Laws Railroad Museum

2019-01-09 Sigma 40mm f/1.4 DG HSM Art Aperture Series: Locomotive at Laws Railroad Museum (Nikon D850)

2019-01-06 Sigma 40mm f/1.4 DG HSM Art First Look

2018

2018-12-18 Sigma 40mm f/1.4 DG HSM Art First Look

2018-12-15 Gear in Progress for Review: Nikon Z7 + Nikon NIKKOR Z 50mm f/1.8 S, Fujifilm GFX-50R, Sigma 40mm f/1.4 DG HSM Art

2018-09-26 Reader Comments: Size/Weight of Sigma DG HSM Art Lenses

2018-09-25 Sigma’s Fast New Art Lenses, Plus What Looks to be a 'Killer' 70-200mm f/2.8 Zoom

2018-09-24 Sigma FE 14mm f/1.8 DG HSM Art Aperture Series and Field Curvature and Focus Shift Analysis: Lingering Snow

2018-09-19 Sigma FE 14mm f/1.8 DG HSM Art Aperture Series: Water-Polished Granite

2018-09-19 Sigma FE 14mm f/1.8 DG HSM Art Aperture Series: Tenaya Canyon Pool

2018-09-19 Sigma FE 135mm f/1.8 DG HSM Art Aperture Series: Ducks in Dana Meadow Pond at Dusk

2018-09-13 Sigma FE 14mm f/1.8 DG HSM Art Aperture Series: Hiker at Upper Conness Lake

2018-09-13 Sigma FE 14mm f/1.8 DG HSM Art Aperture Series: Ancient Downed Pine Tree, Dana Meadow

2018-09-13 Sigma DG HSM Art Lenses for Sony Mirrorless: Ergonomic and Other Concerns

2018-09-01 Sigma DG HSM Art Lenses on Sony Mirrorless, and Implications for Nikon Z7 + Nikon FTZ lens Adapter

2018-08-08 Reader Comment / Question: Lenses for Nikon D850?

2018-07-31 Zeiss Milvus 100mm f/2M Color Correction Shootout vs Nikon 105mm f/2 DC and Sigma 105mm f/1.4 DG HSM Art: Glacial erratic and eroded pine stump

2018-07-24 Sigma 105mm f/1.4 DG HSM Art Aperture Series: White Glacial Erratic Near Dead Pine

2018-07-16 Two Sigma 105mm f/1.4 DG HSM Art Aperture Series: Monitor Pass Area, Sunset View to Northwest, Sunset View to North

2018-07-16 Sigma 105mm f/1.4 DG HSM Art Aperture Series: Last Glow On Lichen Encrusted Dome

2018-07-12 Sigma 105mm f/1.4 DG HSM Art on Nikon D850: Substantial Color Shift Going from f/1.4 to Other Apertures

2018-07-12 Sigma 105mm f/1.4 DG HSM Art Aperture Series: Mt Conness Green Meadow, Dusk

2018-07-07 Sigma 105mm f/1.4 DG HSM Art Assessed for Focus Shift: Wooden Surface of Picnic Table

2018-07-06 Sigma 105mm f/1.4 DG HSM Art for Portraits (UPDATED with examples now published)

2018-06-22 Sigma DG HSM Art Lenses Now Available for Sony Mirrorless

2018-05-30 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 24mm: Lloyd on Bleached Aspen Log

2018-05-26 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 23mm: Dead Brush Closeup in Cottonwood Canyon Wash

2018-05-25 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 24mm: Flowering Creosote Bush

2018-05-25 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 23mm: Sandy Wash in Side Canyon, Zion

2018-05-25 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 19mm: Snake Tracks On Rippled Dunes

2018-05-25 Sigma 105mm f/1.4 DG HSM Art

2018-05-24 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 22mm: Across the Canyon View of Checkerboard Mesa

2018-05-24 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 17mm: Cracked Mud Patterns in Sand Dunes to Distant Peaks at Sunrise

2018-05-23 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 14mm: Sand Dunes Junction

2018-05-23 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 14mm: Checkerboard Mesa, Zion

2018-05-22 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series @ 20mm: Flowering Creosote Bush in Sand Dunes, Figure on Dune

2018-05-11 Sigma 14-24mm f/2.8 DG HSM Art Aperture Series: Rising Sun Strafing Bedded Sandstone

2017

2017-11-26 What Would the Arrival of a 100-Megapixel Fujifilm GFX and/or Hasselblad X1D Mean for the DSLR and Mirrorless Options?

2017-11-14 Deep Stacking with the Sigma 85mm f/1.4 DG HSM Art Using Nikon D850 'Focus shift shooting'

2017-11-13 Stacking at f/1.8?!

2017-11-09 Things Coming Soon

2017-11-08 Nikon D850: Validating 'Focus shift shooting' in the Field: Does it really work well?

2017-10-30 Images Added for Various Lenses

2017-10-29 Sigma 14mm f/1.8 DG HSM Art Aperture Series + Focus Stack: Boulder View to Sub-Peak of Mt Conness

2017-10-29 Scenes Where Focus Stacking Makes all the Difference

2017-10-28 Sigma 135mm f/1.8 DG HSM Art Aperture Series: Trees on Barren North Rocky Face (Nikon D850)

2017-10-25 Nikon 105mm f/1.4E Aperture Series: Sidelit Giant Boulder (Nikon D850)

2017-10-24 Sigma 85mm f/1.4 DG HSM Art Aperture Series: View Over Conness Creek Drainage to Saddlebag Lake (Nikon D850)

2017-10-24 Sigma 135mm f/1.8 DG HSM Art Aperture Series: View Over Conness Creek Drainage to Saddlebag Lake (Nikon D850)

2017-10-09 Nikon D850 + Sigma 135mm f/1.8 DG HSM Art Aperture Series: Bird’s Eye View of Patriarch Grove

2017-10-06 Sigma 14mm f/1.8 DG HSM Art Aperture Series: Precocious Cluster of Yellow Aspen Leaves

2017-09-28 Sigma 14mm f/1.8 DG HSM Art Aperture Series: View to High Peaks from Chickenfoot Lake, Sunset (Nikon D850)

2017-09-26 Sigma 14mm f/1.8 DG HSM Art Aperture Series: Dead and Live Aspen, Dusk

2017-09-22 Sigma 14mm f/1.8 DG HSM Art Aperture Series: Focus Stacking Versus Single Frame

2017-09-21 Sigma 14mm f/1.8 DG HSM Art Aperture Series: Slush Ice on Shallow Pond

2017-09-21 Sigma 14mm f/1.8 DG HSM Art Aperture Series: Clearing Storm over Tenaya Dome

2017-08-26 Reader Question: Best Autofocus Lenses for Nikon D850

2017-08-26 Nikon 8-15mm Fisheye Zoom and Sigma 14mm f/2.8 DG HSM Art — Deferring Review Until D850 arrives

2017-06-18 Sigma 135mm f/1.8 DG HSM Art Aperture Series: Pescadero Creek(Nikon D810)

2017-06-18 Sigma 135mm f/1.8 DG HSM Art Aperture Series: Pescadero Creek Downstream (Nikon D810)

2017-06-18 Sigma 135mm f/1.8 DG HSM Art Aperture Series: Mid-Creek Boulder (Nikon D810)

2017-06-18 Sigma 135mm f/1.8 DG HSM Art Aperture Series: Grass Stems in Blue Boulder (Nikon D810)

2017-06-17 Sigma 135mm f/1.8 DG HSM Art Aperture Series: Pescadero Creek Downstream (Nikon D810)

2017-06-17 Sigma 135mm f/1.8 DG HSM Art Aperture Series: American Hotel, Cerro Gordo (Nikon D810)

2017-06-15 Shootout: Sigma 135mm f/1.8 DG HSM Art vs Nikon 70-200mm f/2.8E FL ED VR: Cerro Gordo Bunkhouse (Nikon D810)

2017-06-12 Sigma 135mm f/1.8 DG HSM ArtAperture Series: Glass Sculpture (Nikon D810)

2017-06-12 Sigma 135mm f/1.8 DG HSM Art Aperture Series: Hotel Cerro Gordo, Deep Dusk (Nikon D810)

2017-05-11 Zeiss 135mm f/2 APO-Sonnar: the Reigning 135mm Makes Short Work of Sigma (at least at 1:5)

2017-05-11 Sigma 135mm f/1.8 DG HSM Art Aperture Series with Focus Stack: Rodin Burghers of Calais

2017-05-11 Sigma 135mm f/1.8 DG HSM Art Aperture Series with Focus Stack: Quadrangle at Dusk

2017-05-10 Sigma 135mm f/1.8 DG HSM Art Shootout vs Nikon 70-200/2.8 FL ED VR vs Zeiss 135/2 APO-Sonnar

2017-05-07 Sigma 135mm f/1.8 DG HSM Art: How Good is Autofocus Accuracy on Nikon D810

2017-05-07 REVIEWED: Sigma 135mm f/1.8 DG HSM Art

2017-03-16 Sigma 135mm f/1.8 DG HSM Art Available for Pre-Order as of 17 March

2017-02-24 Sigma Announces 24-70mm f/2.8 DG HSM Art for Nikon and Canon DSLRs and Sigma sa

2017-02-24 Sigma Announces 14mm f/1.8 DG HSM Art for Nikon and Canon DSLRs and Sigma sa

2017-02-24 Sigma Announces 135mm f/1.8 DG HSM Art for Nikon and Canon DSLRs and Sigma sa

2016

2016-11-29 Sigma 12-24mm f/4 DG HSM Art Aperture Series: Sunlight on the Beaver Pond (Nikon D810)

2016-11-29 Shootout: Sigma 85mm f/1.4 DG HSM Art vs Zeiss Milvus 85/1.4 (Siemens Chart, Nikon D810)

2016-11-26 Sigma 12-24mm f/4 DG HSM Art Aperture Series: Two Aspen (Nikon D810)

2016-11-21 3-Way Shootout: Sigma 85mm f/1.4 DG HSM Art vs Zeiss Milvus 85/1.4 vs Nikon 85/1.4G (Snowy Spur of Mt Conness, Nikon D810)

2016-11-20 3-Way Shootout: Sigma 85mm f/1.4 DG HSM Art vs Zeiss Milvus 85/1.4 vs Nikon 85/1.4G (Lundy Beaver Ponds, Nikon D810)

2016-11-16 Sigma 85mm f/1.4 DG HSM Art Aperture Series: Peaks by Moonlight (Nikon D810)

2016-11-15 Sigma 85mm f/1.4 DG HSM Art Aperture Series: Sunlight on Saddlebag Lake (Nikon D810)

2016-11-13 Sigma 12-24mm f/4 DG HSM Art Aperture Series: Forest Stream (Nikon D810)

2016-11-10 Sigma 85mm f/1.4 DG HSM Art Arriving Friday for Testing

2016-11-10 Sigma 12-24mm f/4 DG HSM Art Arriving for Testing

2016-11-07 MTF for the Sigma 85mm f/1.4 DG HSM Art

2016-10-21 Sigma 24-35mm f/2 DG HSM Art Aperture Series:Rocky Outcrop and Aspen Fall Color

2016-10-21 Shootout: Sigma 24-35mm f/2 DG HSM Art vs 35mm f/1.4 Art: Aspen With Rust-Colored Trunk

2016-10-15 Why Lens Performance Matters for Focus Stacking

2016-10-14 Sigma 24-35mm f/2 DG HSM Art for a 160-megapixel Panorama: Oneida Lake

2016-10-14 Shootout: Sigma 24-35mm f/2 DG HSM Art vs 35mm f/1.4 Art: Cottonwood Canyon Cabin

2016-10-12 Nikon AF-S 105mm f/1.4E ED Aperture Series: Fall Color Along Creek

2016-10-11 Shootout: Sigma 24-35mm f/2 DG HSM Art vs 24-105mm f/4 DG OS HSM Art: Colorful Creek

2016-09-19 Sigma 85mm f/1.4 DG HSM Art in Nikon, Canon, Sigma SA Mount

2016-09-19 Sigma 12-24mm f/4 DG HSM Art in Nikon, Canon, Sigma SA Mount

2016-05-16 Pentax K1: that Scratch from Sigma Lenses

2016-05-10 Sigma DG HSM Art Lenses at $100 to $200 Off

2016-02-19 Pentax K1 Full Frame Lens Selection

2016-01-17 Sigma 24mm f/1.4A Examples in Mt Conness Watershed

2015

2015-12-28 Sigma 20mm f/1.4 DG HSM Art Aperture Series: Pescadero Creek (Canon 5DS R)

2015-12-20 Sigma 20mm f/1.4 DG HSM Art Aperture Series: Leaves, Fence and Backlit Tree (5DS R)

2015-12-20 Sigma 20mm f/1.4 DG HSM Art Aperture Series: Distortion examples, Uncorrected and Corrected

2015-12-13 Sigma 20mm f/1.4 DG HSM Art Aperture Series: Late Season Pomegranates (5DS R)

2015-12-13 Sigma 20mm f/1.4 DG HSM Art Aperture Series: Grumpy Toad (5DS R)

2015-12-13 Sigma 20mm f/1.4 DG HSM Art Aperture Series: Field Curvature Assessment

2015-12-13 Sigma 20mm f/1.4 DG HSM Art Aperture Series: Decomposing Pumpkins (5DS R)

2015-10-15 Announced: Sigma 20mm f/1.4 DG HSM Art for Canon, Nikon

2015-07-20 Sigma 24mm f/1.4 DG HSM Art Aperture Series: Bristlecone on Bare Hill, Checking for Lens Symmetry (Canon 5DS R)

2015-07-09 Reader Inquiry: Sigma DG HSM Art Lenses on Canon 5DS R

2015-06-18 Sigma Announces World’s First Full-Frame f/2 Zoom for Canon, Nikon, Sigma Mounts: 24-35mm f/2 DG HSM Art

2015-05-22 Sigma 24mm f/1.4 DG HSM Art Aperture Series: Defunct Ranch Buildings at Sunset

2015-05-17 Sigma 24mm f/1.4 DG HSM Art Aperture Series: Collapsed Ranch House at Sunset

2015-05-16 Sigma 24mm f/1.4 DG HSM Art Aperture Series: Huge Barn Interior, Sunlit and Skylit

2015-05-15 Sigma 24mm f/1.4 DG HSM Art Aperture Series: Huge Barn Interior

2015-04-18 Don’t Confuse Focusing Distance with Reproduction Ratio aka Magnification

2015-04-12 Shootout on Nikon D810: Sigma 24mm f/1.4 DG HSM Art vs Nikon AF-S 24mm f/1.4G ED

2015-04-07 5-way Shootout at 24mm: Sigma 24mm f/1.4 DG HSM Art vs Canon 24/1.4L II, 24/2.8 IS, 24-70/2.8L II, 11-24/4L

2015-04-04 Sigma 24mm f/1.4 DG HSM Art: 'Water Wears Its Way' Aperture Series (Nikon D810)

2015-04-04 Sigma 24mm f/1.4 DG HSM Art: 'Glistening Rocks and Running Water' Aperture Series (Nikon D810)

2015-04-02 Sigma 24mm f/1.4 DG HSM Art for NIKON

2015-03-29 Sigma 24mm f/1.4 DG HSM Art: Buckeye Leaves and Peach Blossoms Aperture Series

2015-03-28 Shootout at 24mm: Sigma 24mm f/1.4 DG HSM Art vs Canon 24/1.4L II, 24/2.8 IS, 11-24/4L

2015-03-27 Sigma 24mm f/1.4 DG HSM Art: Vignetting and Distortion

2015-03-27 Sigma 24mm f/1.4 DG HSM Art: Aperture Series 'Magenta Flower' and 'Poppy'

2015-03-27 Sigma 24mm f/1.4 DG HSM Art, MTF

2015-03-27 Sigma 24mm f/1.4 DG HSM Art Flare Control: Aperture Series 'Extreme Backlighting, Cherry Blossoms'

2015-03-26 Reviewed: Sigma 24mm f/1.4 DG HSM Art

2015-02-11 Sigma 24mm f/1.4 DG HSM Art Lens: Pricing and Availability

2015-02-09 Sigma Announces 24mm f/1.4 DG HSM A Lens for DSLRs, Joining its Superb 35mm and 50mm Siblings

2014

2014-07-30 Sigma 50mm f/1.4 DG HSM A vs Nikon 50/1.4G and 50/1.8G (Nikon D810)

2014-07-18 Nikon D810, Sigma 50/1.4, Pentax 645Z, Sigma dp2 Quattro

2014-07-17 Shootout: Sigma 50mm f/1.4 DG HSM 'Art' vs Canon 50/1.2L and 50/1.4 (5D Mark III, Decorated Bike)

2014-07-03 Sigma 50mm f/1.4 DG HSM A: Best Autofocus Lens, In Stock for Canon

2014-06-24 Sigma 50mm f/1.4 DG HSM A: Dual-Focus Aperture Series: Tuolumne River Cascade (Canon 5D Mark III)

2014-06-23 Sigma 50mm f/1.4 DG HSM A: Aperture Series 'Wyman Canyon Cabin' (5D Mark III)

2014-06-22 Sigma 50mm f/1.4 DG HSM A: Aperture Series 'Backlit Bristlecones' (5D Mark III)

2014-06-11 Sigma 35mm f/1.0 for Sony A6000 (via Metabones SpeedBooster)

2014-06-10 Shootout: Sigma 50mm f/1.4 DG HSM 'Art' vs Canon 50/1.2L and 50/1.4 (5D Mark III, Dolls)

2014-06-07 Sigma 50mm f/1.4 DG HSM: Discussing Optical and Autofocus Expectations, LOCA

2014-06-07 Sigma 50mm f/1.4 DG HSM 'Art' On the Way for Testing

2014-06-05 Shootout: Sigma 35/1.4 DG HSM A vs Nikon 35/1.4G (D800E, Summit Building)

2014-06-02 Zeiss 35/1.4 Distagon versus Sigma 35/1.4 DG HSM A1: Boulder Logjam (D800E)

2014-05-26 Sigma 50mm f/1.4 DG HSM 'Art': Expected Soon

2014-04-19 Sigma 50mm f/1.4 DG HSM 'Art': Soon I Hope, and for Nikon and Canon

2014-04-10 Sigma 50mm f/1.4 DG HSM 'Art' (for Canon, Nikon, etc)

2014-02-18 Compared: Nikon 35mm f/1.8G FX vs Sigma 35mm f/1.4 DG HSM Art

2014-01-22 Sigma 50mm f/1.4 DG HSM 'Art' (for Canon, Nikon, etc)

2014-01-06 Sigma 50mm f/1.4 DG HSM 'Art' (for Canon, Nikon, etc)

2013

2013-10-25 Sigma 24-105mm f/4 DG HSM OIS zoom for Nikon, Canon, Sony, Sigma DSLRs

2013-04-13 Shootout: Leica M Typ 240 / M240 + 50/2 APO ASPH vs Nikon D7100 + Sigma 35/1.4 DG HSM

2013-02-25 Flare Assessment — Sigma 35/1.4 DG HSM A1

2013-02-24 Compared: Zeiss 35/2, 35/1.4 Distagons vs Sigma 35/1.4 on D800E

2013-02-22 Lens Skew Study added to MSI

2013-02-20 Sigma 35mm f/1.4 DG HSM: Lens Skew Confirmation (Alternate Scene)

2013-02-20 Sigma 35mm f/1.4 DG HSM: Lens Skew

2013-02-19 Sigma 35mm f/1.4 DG HSM: Aperture Series (Beater Bikes, D800E)

2013-02-18 Sigma 35mm f/1.4 DG HSM: Aperture Series (Sprinkler Control, D800E)

2013-02-17 Sigma 35mm f/1.4 DG HSM: Autofocus Portraits After Fine Focus Adjust

2013-02-10 Sigma 35mm f/1.4 DG HSM: Autofocus Portraits

2013-02-10 Sigma 35mm f/1.4 DG HSM

2013-02-10 Autofocus Accuracy: Sigma 35mm f/1.4 and Nikon AF-S 35/1.4G using Lens Align and Fine Focus Adjust

2013-02-08 Zeiss 35/1.4 Distagon versus Sigma 35/1.4 DG HSM A1 and Nikon AF-S 35/1.4G(Nikon D800E)

2013-02-07 Sigma 35mm f/1.4 DG A1 HSM vs Nikon AF-S 35/1.4G (on Nikon D800E)

2013-02-06 Compared on Nikon D800E: Sigma 35mm f/1.4 DG A1 HSM, Zeiss 35/1.4 Distagon, Nikon AF-S 35/1.4G

2013-02-05 Sigma 35mm f/1.4 DG A1 HSM for Nikon

2012

2012-12-23 Field Comparison: Sigma 35mm f/1.4 DG HSM vs Canon 35mm f/1.4L (Pots/Garden)

2012-12-22 Field Comparison: Sigma 35mm f/1.4 DG HSM vs Canon 35mm f/1.4L (Oaks)

2012-12-22 Field Comparison: Sigma 35mm f/1.4 DG HSM vs Canon 35mm f/1.4L (Manzanita)

2012-12-22 Field Comparison: Sigma 35mm f/1.4 DG HSM vs Canon 35mm f/1.4L (Fence Gate)

2012-12-15 Sigma 35mm f/1.4 DG HSM: Field Shooting Examples (Alpine Creek)

2012-12-12 Compared: Sigma 35mm f/1.4 DG HSM vs Canon 35mm f/1.4L on Canon 5D Mark III

2012-12-10 Sigma 35mm f/1.4 DG HSM

2012-11-26 Sigma 35mm f/1.4 DG HSM: Quality Control Steps Up (“A1 MTF”)

2012-11-16 Sigma 35mm f/1.4 DG HSM for Nikon, Canon, etc

2008

2008-12-08 Sigma 50mm f/1.4 EX DG HSM reviewed

2008-10-24 Just in: Sigma 50mm f/1.4 EX DG HSM

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