Introduction and overview of making sharp images..
Newest blog posts
Sharpness loss by camera or support or technique..
Digital capture technology is discrete, and not the same as film..
Making image captures look sharp..
Bypass the limits on depth of field and diffraction..
Examples of Focus Stacking..
Getting peak performance from your lens.
Zone of focus, not plane of focus.
Understanding resolution and contrast graphs..
- MTF Introduction
- Fantasy Land MTF
- Reading MTF Charts
- MTF Measurement vs Field Curvature
- MTF and Sensor Size
- Lateral Chromatic Aberration and Astigmatism
- Zeiss MTF Examples
- Leica MTF Examples
- Leica MTF Analysis / Summilux, Elmarit, Elmar 24mm
- Leica MTF For Leica 35/1.4 Summilux-M ASPH
- Canon MTF Examples
- Nikon MTF Examples
How to verify a good sample and assess all aspects of lens performance..
Illuminating examples of lens behavior..
Research into sharpness of handheld images with and without image stabilization.
Maximizing image quality, dynamic range, minimizing digital noise.
The best becomes better..
Oustanding image quality, but with some limitations..
Improvements on the workhorse D800E..
36 megapixels in a compact full-frame DSLR..
Image quality best practices and how-to with the Nikon D800/D800E..
D800E supplement and comparisons with Nikon D800..
Comparing the 2012/2013 high-res pro DSLRs..
Nikon’s pro-body high speed low light wonder..
18 megapixel big black brick, Canon’s top of the line DSLR..
50 megapixel successor to the 22 megapixel Canon 5D Mark III..
- RAW vs mRAW: Sharpness, Tone, Color
- RAW vs sRAW: Sharpness, Tone, Color
- What 50 Megapixels of Sharpness Looks Like (Dolls)
- Sharpness: 5DS R vs 5D Mark III (Mosaic)
- Sharpness: 5DS R vs 5DS vs 5D Mark III (Zeiss Siemens Chart)
- Sharpness: 5DS R vs 5DS vs 5D Mark III vs Nikon D810 (Old Map)
- Noise at ISO 100, Native Resolution and at Canon 5DM3 Resolution (Dolls)
Ultra fast 200mm with gorgeous bokeh and high resolving power..
Includes: D3x resolution comparisons (res chart) with Nikon D3, Canon EOS 1Ds Mark III, resolution comparison on outdoor shot with Nikon D3, large examples, large wildlife examples, Nikon 200mm f/2 VR on D3x, long exposure noise ISO series, D3x sensitivity on diffraction, D3x dynamic range at ISO 100 vs ISO 50, D3x vs D3 color and noise..
Nikon vs Canon: Noise and Sharpness.
In-depth review of the Canon EF 14mm f/2.8L II including flare, distortion, field curvature, resolution charts, numerous field examples and comparison to the Nikon 14-24mm f/2.8G. The Canon EF 14/2.8L II is a superb lens, but with some peculiarities which may enhance or degrade its appeal for different uses. The review is as much a “user guide” as a review; even if you use this lens it’s well worth your time to read this review..
[Archive] In-depth review on the Nikon D2x of the Nikon 28mm f/3.5 PC-Nikkor, Nikon 28mm f/4 PC-Nikkor and the Schneider 28mm f/2.8 PC-Super-Angulon. Flare, distortion, color fringing, color rendition, sharpness, ergonomics, aligmnent, sample variation..
Verions 2 — 36-megapixel full-frame DSLR with SuperRes Pixel Shift Mode..
36-megapixel full-frame DSLR with SuperRes Pixel Shift Mode..
24-megapixel APS-C DSLR with SuperResolution true-color..
- SuperResolution: Checkerboard Effect
- SuperResolution: Zeiss Siemens Test Target
- SuperResolution: Texture and Detail (Flower Paper)
- SuperResolution: Fabric and Color (Cycling Jersey)
- SuperResolution: Tarnished Silver Pitcher
- SuperResolution: Ultra Fine Details (Silver Coin, Engraving, Carved-Stone Box)
Tamron’s ultra wide to medium fast zoom..
The fastest extreme wide angle yet..
Sigma’s fast high performance wide angle..
Sigma’s fast high performance normal lens..
Fastest 135mm lens yet, with ultra high performance..
Tilt/Shift by Schneider for Canon and Nikon and other brands..
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..
Nikon’s latest wide range zoom with vibration reduction and fixed f/4 aperture..
Nikon’s latest 50mm lens compared with the Zeiss ZF 50/1.4, Nikon 50/1.4D and Sigma 50/1.4..
Nikon’s High Performance Moderately-Priced 50mm..
State of the art design in a fast ultra wide angle lens..
Nikon’s workhorse 200mm macro lens, and not just sharp at close-ups!.
A superlative multi-spectral lens with perfect color correction..
Canon’s compact image stabilized wide angle zoom..
Relatively inexpensive alternative to the pro 35/1.4G..
State of the art design in a fast 85mm lens..
Compact and lightweight travel-friendly telephoto..
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..
Nikon’s ultra wide angle zoom and the Nikon 14mm f/2.8, critical focus shift behavior..
Medium format Zeiss glass in Hartblei precision tilt/shift lens barrels!.
- Resolution chart—40/4
- Resolution chart—80/2.8
- Resolution chart—120/4
- Field shot aperture series crops—40/4
- Field shot aperture series crops—80/2.8
- Field shot aperture series crops—120/4
- Resolution from Diffraction —120/4
- MTF for Hartblei 40mm f/4
- MTF for Hartblei 80mm f/2.8
- MTF for Hartblei 120mm f/4
All-arounder compact lens with macro capability..
High speed normal lens optimized for Canon mirrorless..
Bread and butter all-around zoom..
Moderate wide angle expressly designed for Nikon Z cameras..
Normal lens expressly designed for Nikon Z cameras..
Mid-range zoom expressly designed for Nikon Z cameras..
Full frame compact mirrorless with interchangeable lenses..
Fast high performance normal lens of Zeiss design..
Compact moderate wide angle for Sony mirrorless..
Compact normal lens for full-frame Sony mirrorless..
Wide angle to telephoto zoom with optical stabilization..
Premiere telephoto zoom for Sony full frame mirrorless.
The best compact big-sensor digital camera yet?.
Razor sharp 28mm lens on APS-C sensor and outstanding usability and features..
Stunningly high image quality in a 20MP point and shoot tiny camera..
Normal lens for Micro Four Thirds or Sony E Mount/NEX..
Updated model with hi-res sensor shift mode..
Panasonic G-1 especially compared to the Olympus E-P1. Intriguing results with RAW vs in-camera JPEG. RAW file included for your own analysis..
24 or 16 megapixels in a compact body with APS-C sensor..
Outstanding ultra wide angle performer..
Outstanding wide angle, superb performer..
Manual focus moderate wide angle for full-frame mirrorless..
Manual focus normal lens for full-frame mirrorless..
Manual focus telephoto lens for full-frame mirrorless..
Autofocus extreme wide angle for Sony full-frame mirrorless..
Autofocus wide angle for Sony full-frame mirrorless..
All-around slightly wide angle/normal with close focus..
Autofocus portrait lens for Sony full-frame mirrorless..
Apochromatic pin-sharp medium telephoto for Sony full-frame mirrorless..
Ultra wide angle lens for Sony NEX or Fujifilm X..
Normal lens for Sony NEX or Fujifilm X..
Moderate telephoto macro lens for Sony NEX or Fujifilm X. Useful on full frame too!.
Sigma’s raw file processing software, version 6.x..
28mm f/2.8 equivalent lens on APS-C sensor..
Ultra wide angle equivalent to 19mm f/3.3. .
Medium format telephoto lens, 74mm equivalent..
Telephoto macro lens, 99mm equivalent..
High end image quality, but what about lenses?.
How does Leica’s medium format entry measure up in ergonomics, image quality, etc?.
Extreme wide angle with ultra high performance..
Moderate wide angle with low distortion..
Milvus garb for the venerable 15/2.8 Distagon, with improved lens coating..
Highest performing 25mm from Zeiss ever..
Outstanding build and optical quality in a normal lens..
Outstanding build and optical quality in a medium tele..
On Otus, in effect. Milvus garb for the 135/2 APO, with improved lens coatings on one element. See the ZF.2/ZE 135/2 review pages..
Sharpness and rendering..
Ultra high performance in an extreme wild wide angle lens..
Brilliant imaging, even wide open, but with a few quirks. (Review in progress) .
Versatility in a “normal” lens and macro too!.
Ultra high performance apochromatic normal lens, first in the Otus line..
Ultra high performance apochromatic medium telephoto, overview and technical..
King of bokeh! Corner-to-corner sharpness, world class..
Beautiful bokeh, razor sharp, superb color correction..
Tips for getting the most out of diglloyd publications..
Articles written for Lenspire.ZEISS.com..
Understanding lens performance..
A jaw-dropping visual experience for video or stills..
Medium format Zeiss glass in Hartblei precision tilt/shift lens barrels!.
Relative sharpness and performance vs APS-C cameras..
Ultimate resolution in black and white..
24-megapixel CMOS monochrome sensor..
24-megapixel fixed lens compact full-frame..
Leica’s ultra wide angle zoom lens..
Leica’s best-performing 21mm..
Leica’s best-performing 24mm, and with a flat field..
Leica’s widest lens utilizing built-in frame lines..
Leica’s smallest and lightest M lens with superlative performance..
Leica’s superlative and most natural lens for the M..
World’s fastest 50mm full-frame lens..
The world’s best 50mm lens is outstanding, but with some limits..
Leica’s ultra high grade and ultra fast modern short telephoto..
Leica’s medium tele for Leica M..
Leica’s budget 75mm medium telephoto..
Leica’s longer tele for Leica M..
Compact lens for portraiture or similar..
Superb all-around macro and general-purpose lens..
World’s best mid-range telephoto lens..
Compact and ultra high performance long telephoto..
Compact high performance, ultra low distortion..
Compact wide angle with brilliant contrast..
Fast and ultra high performance moderate wide angle rangefinder lens..
Ultra compact high performance moderate wide angle rangefinder lens..
Blog posts, reverse chronological
2017-02-25 MTF for Fujifilm GFX GF Lenses
2016-11-07 MTF for the Sigma 85mm f/1.4 DG HSM Art
2016-02-18 Pentax K1 Super Resolution Pixel Shift Mode
2016-02-04 Sony Diffraction-Free Computed Fantasy MTF
2015-10-14 Zeiss Otus 28mm f/1.4 APO-Distagon MTF
2015-09-11 Understanding the new Zeiss Milvus Lineup
2015-06-21 Canon 5DS R: new King of DSLR Resolution
2015-03-27 Sigma 24mm f/1.4 DG HSM Art, MTF
2014-09-03 Zeiss Loxia MTF Discussion
2014-07-01 The Effect of Focus Shift on Image Sharpness
2013-07-18 Ricoh GR: Lens Quality and MTF
2013-05-02 Nikon D800E vs Canon 5D Mark III: Sharpness
2013-03-28 Sigma DP3 Merrill Sharpness
2012-09-27 Leica M Monochrom — Sharpness With Filters
2012-08-31 Retina-resolution Images Now Deployed Here
2012-08-29 Sony RX100: Examples and Sharpness
2012-04-13 Nikon D800 vs D3s Resolution
2012-03-07 Diffraction, Sharpness and Nikon D800E
2012-02-09 My Reference Lenses For Testing Sharpness
2011-07-16 Sigma DP2x Resolution
2010-11-25 Nikon 70-200mm f/2.8G VR II sharpness
2010-02-12 MTF comments updated for Zeiss ZF / Zeiss ZE
2009-12-29 Resolution contest: Nikon D3x vs Nikon D3s
2009-12-26 Nikon D3s: limits of resolution
2009-07-27 Olympus E-P1 resolution
2009-04-08 Zeiss’ Dr. Nasse on MTF, part II
2009-01-09 Nikon D3 vs Nikon D3x resolution
2008-12-26 D3x vs D3 resolution compared
2008-12-08 Sony A900 vs Canon 1Ds Mark II resolution
2008-11-11 Focus shift on a resolution chart
2008-10-19 Real-world Sharpness II: D3/1DsM3 updated
2008-10-15 Nikon 70-200 VR sharpness workaround
2008-10-15 Real-world Sharpness II: D3/1DsM3 updated
2008-06-14 Resolution limits for digital SLRs
2008-04-30 The future of resolution, 36 megapixels?
2008-01-21 Zeiss white paper on MTF
2007-12-15 Digital SLR resolution — the future
2007-09-08 On sharpness, megapixels and lens testing