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pincushion distortion

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2021-04-24 Reader Question on Sigma FE 85mm f/1.4 DG DN: Sharpness and Distortion, Which 85mm Lens?

2020-09-11 Sigma FE 85mm f/1.4 DG DN Art: Hideous Pincushion Distortion and Its Effects on Micro Contrast

2019-04-06 Zeiss Batis 85mm f/1.8: the Negative Sharpness and Micro Contrast Effects of Correcting nearly 3% Pincushion Distortion

2015-04-29 Zeiss Batis 85mm f/1.8 Sonnar: MTF Series from f/1.8 - f/16 + Distortion

2010-11-13 Nikon 24-120mm f/4G VR comments

How to Test A Lens

How to verify a good sample and assess all aspects of lens performance..

1. Testing for distortion

Panasonic Lumix S 24-105mm f/4 Macro OIS

All-arounder entry-level mid-range zoom for L-Mount..

1. Optical Distortion Across the Zoom Range, with/without Distortion Correction

Nikon AF-S 70-200mm f/2.8G ED VR II

Nikon’s bread and butter telephoto zoom.

1. Distortion

Canon 85mm f/1.4L IS USM

Canon’s best-ever medium telephoto and with image stabilization..

1. Aperture Series: Selfies on Gnarled Stump-Log

Sigma 24-35mm f/2 DG HSM Art

Mid-range optimized groundbreaking f/2 zoom..

1. Distortion @ 35mm, Corrected vs Uncorrected

180mm Lenses for the Nikon D3x

Explores options for 180mm lenses on the Nikon D3x, including the Leica 180/2.8 APO-Elmarit-R in Nikon mount, Nikon 180/2.8 ED, Nikon 70-200/2.8 VR, Nikon 70-300/4.5-5.6 VR, and Tamron 70-200/2.8. Updated: now includes the Voigtlander 180/4 APO!.

1. Comparison

Canon 24-70mm f/2.8L II and 24-70mm f/4L IS

Canon’s premium mid-range zooms..

1. Aperture Series: 24-70/2.8L II vs 50/1.2L, 50/1.4, 50/1.8 II (Dolls)

Nikon AF-S 85mm f/1.4G

State of the art design in a fast 85mm lens..

1. 85/1.4G vs 85/1.8G: Distortion (D800E)

Nikon Ultra Wide Zooms

Comparing Nikon 16-35mm f/4 VR, 17-35mm f/2.8, 14-24mm f/2.8, 18-35mm, 24-70mm f/2.8 along with Nikon 20mm f/3.5, 24mm f/2, 28mm f/2, 35mm f/1.4 AIS, and more..

1. Distortion at 35mm

Fujifilm GF 20-35mm f/4 R WR

Compact wide angle.

1. Distortion and Distortion Correction from 20mm to 35mm
2. SHOOTOUT vs Fujifilm GF 35-70mm f/3.5-4.5: Icebergs in August on Dana Lake #1

Fujifilm GF 32-64mm f/4 R LM WR

Mid-range zoom lens equivalent to 26-53mm f/3.3..

1. Fujifilm GF 32-64mm f/4: Distortion and Distortion Correction

Fujifilm GF 35-70mm f/4.5-5.6

Compact wide angle.

1. SHOOTOUT vs Fujifilm GF 35-70mm f/3.5-4.5: Icebergs in August on Dana Lake #1

Fujifilm GF 80mm f/1.7 R WR

Standard normal lens equivalent to 66mm f/1.4..

1. Distortion and Distortion Correction for Fujifilm GF 80mm f/1.7 R LM WR

Otus 85mm f/1.4 APO-Planar

Ultra high performance apochromatic medium telephoto, overview and technical..

1. Distortion for Otus 85/1.4 APO-Planar

Zeiss LensSpire Articles

Articles written for Lenspire.ZEISS.com..

1. Zoom Lens or Prime? 50mm and 55mm

Understanding optics

Understanding lens performance..

1. Understanding Lens Distortion

Canon RF 15-35mm f/2.8L IS USM

Fast ultra wide zoom lens..

1. Distortion and Distortion Correction

Canon RF 24-70mm f/2.8L IS USM

Fast standard zoom lens..

1. Distortion and Distortion Correction

Nikon NIKKOR Z 14-30mm f/4 S

Ultra wide compact zoom for Nikon Z cameras..

1. Distortion for Nikon NIKKOR Z 14-30mm f/4 S at 14mm, 19.5mm, 30mm

Nikon NIKKOR Z 24-70mm f/2.8 S

Fast mid-range zoom expressly designed for Nikon Z cameras..

1. Distortion @ 70mm, 50mm, 35mm for Nikon NIKKOR Z 24-70mm f/2.8 S

Nikon NIKKOR Z 70-200mm f/2.8 S

Fast portrait telephoto for Nikon Z..

1. Aperture Series @ 145mm: Glowing Aspen Trunks at Dusk (Z8)
2. Aperture Series @ 200mm: Snow Field (Z8)
3. Aperture Series @ 200mm: Overflowing Creek in Meadow, View from Above (Z8)

Sony FE 35mm f/1.4 GM

High performance mild wide-angle..

1. Optical Distortion for Sony FE 35mm f/1.4 GM

Sony FE 50mm f/1.2 GM

High performance, high speed..

1. Distortion and Distortion Correction for Sony FE 50mm f/1.2 GM
2. Shootout vs Sony FE 24-70mm f/2.8 GM II, Voigtlander FE 50/2 (Deck and Roof)

Sigma FE 14-24mm f/2.8 DG DN Art

Native-mount ultra wide angle high performance zoom for mirrorless..

1. Aperture Series @ 24mm: Teak Bench Closeup

Sigma FE 85mm f/1.4 DG DN Art

Ultra high performance medium telephoto..

1. Distortion
2. Distortion Correction Impact on Micro Contrast and Sharpness
3. Sigma 85mm f/1.4 DG DN Art: Conclusions

Voigtlander FE 50mm f/2 APO-Lanthar Aspherical

High-grade manual focus normal lens..

1. Distortion for Voigtlander 50mm f/2 APO-Lanthar Aspherical
2. Shootout vs Sony FE 24-70mm f/2.8 GM II (Deck and Roof)

Sony FE 12-24mm f/2.8 GM

Fast extreme wide angle zoom..

1. Distortion for Sony FE 12-24mm f/2.8 GM
2. Shootout @ 24mm vs Sony FE 24-70mm f/2.8 GM II (Colorado Cabin)

Sony FE 16-35mm f/2.8 GM II

Pro-grade f/2.8 wide angle zoom, updated..

1. Sony FE 16-35/2.8 GM II: Distortion

Sony FE 16-35mm f/2.8 GM

Pro-grade f/2.8 wide angle zoom..

1. 3-Way Shootout @ 24mm: Rock Creek Meadow

Sony FE 16-35mm f/4 ZA OSS Vario-Tessar

Comapact ultra-wide zoom for Sony full frame mirrorless..

1. Distortion Examples @ 24mm
2. Distortion Examples @ 35mm

Sony FE 20-70mm f/4 G

Wide range zoom aimed at bloggers..

1. Sony FE 20-70mm f/4 G Distortion @ 20mm, 24mm, 35mm, 50mm, 65mm
2. Aperture Series @ 66mm: Alpine Creek
3. Aperture Series @ 70mm: Riparian Spring Green, Alpine Creek

Sony FE 24-70mm f/2.8 GM II

Premiere mid-range zoom for Sony full frame mirrorless.

1. Distortion
2. Shootout @ 24mm vs Sony FE 12-24mm f/2.8 GM (Colorado Cabin)
3. Shootout @ 50mm vs Voigtlander FE 50/2 APO-Lanthar (Deck and Roof)

Sony FE 24-70mm f/2.8 GM

Premiere mid-range zoom for Sony full frame mirrorless.

1. Distortion @ 35mm: Uncorrected vs Corrected
2. Distortion @ 50mm: Uncorrected vs Corrected

Sony FE 24-105mm f/4 G OSS

Wide angle to telephoto zoom with optical stabilization..

1. Shootout @ 85mm: Sony 24-105/4G OSS vs Zeiss Loxia 85mm f/2.4 (Mosaic)

Zeiss Loxia 85mm f/2.4 Sonnar

Manual focus telephoto lens for full-frame mirrorless..

1. Distortion for Zeiss Loxia 85mm f/2.4 Sonnar

Zeiss Batis 85mm f/1.8 Sonnar

Autofocus portrait lens for Sony full-frame mirrorless..

1. Distortion for Zeiss Batis 85/1.8 Sonnar

Considerations in choosing a lens.

Focal lengths, color, weight and travel considerations. (relevant, but dated/old material).

1. Analysis of 35mm Lens Choices

Leica 16-18-21mm f/4 Tri-Elmar-M ASPH

Leica’s ultra wide angle zoom lens..

1. Distortion at 16mm, 18mm, 21mm

Zeiss ZM 85mm f/2 Sonnar

Ultra high performance (discontinued).

1. Distortion for ZM 85/2 Sonnar

Blog posts, reverse chronological

2021

2021-04-24 Reader Question on Sigma FE 85mm f/1.4 DG DN: Sharpness and Distortion, Which 85mm Lens?

2020

2020-09-11 Sigma FE 85mm f/1.4 DG DN Art: Hideous Pincushion Distortion and Its Effects on Micro Contrast

2019

2019-04-06 Zeiss Batis 85mm f/1.8: the Negative Sharpness and Micro Contrast Effects of Correcting nearly 3% Pincushion Distortion

2015

2015-04-29 Zeiss Batis 85mm f/1.8 Sonnar: MTF Series from f/1.8 - f/16 + Distortion

2010

2010-11-13 Nikon 24-120mm f/4G VR comments