Understanding Modulation Transfer Function (MTF)
Understanding resolution and contrast graphs..
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fantasy MTF
computed (not measured) MTF based on computed optical designs (not real lenses), usually also ignoring diffraction and with dubious spectral balancing
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2023-03-14 Lens Sharpness, and Why Optical Focus Shift is the #1 Suckiest Lens Compromise
2023-01-17 Sony FE 20-70mm f/4G: Appealing Zoom Range, How Good Will It Be?
2020-07-07 Sony FE 12-24mm f/2.8 GM: will it be the ultra wide zoom I’ve been hankering for?
2019-11-15 The Reality of Zoom Lens Performance
2019-09-07 Sigma 14-24mm F/2.8 DG DN Aperture Series @ 24mm: Teak Bench Closeup
2019-09-01 First Look at the Sigma 35mm f/1.2 DG DN Art: Lack Micro Contrast at f/1.2 and f/1.4
2017-02-25 MTF for Fujifilm GFX GF Lenses
2016-07-11 NEW Sony Planar T* FE 50mm f/1.4 ZA for Sony Mirrorless
2016-02-04 Sony Diffraction-Free Computed (not measured) Fantasy MTF Charts
2015-01-26 What does 50 Megapixels mean vs 36 Megapixels?
2013-07-18 Ricoh GR: Lens Quality and MTF
Leica 14-24mm f/2.8 Super-Vario-Elmarit-SL ASPH
Fast short wide angle lens for L-Mount cameras..
Leica 28mm f/2 APO-Summicron-SL ASPH
Fast short wide angle lens for L-Mount cameras..
Leica 50mm f/2 Summicron-SL ASPH
Non-APO normal lens..
Sigma 85mm f/1.4 DG HSM Art
Sigma’s best portrait lens..
Canon EF 11-24mm f/4L USM
Extreme wide angle zoom..
Canon EF 16-35mm f/2.8L III
Is the 3rd time the charm?.
Nikon AF-S 300mm f/4E PF ED VR
Compact and lightweight travel-friendly telephoto..
Fujifilm GF 23mm f/4 R WR
Ultra wide angle equivalent to 19mm f/3.3. .
Fujifilm GF 30mm f/3.5 R LM WR
Compact wide angle.
Fujifilm GF 30mm f/5.6 TS
Wide angle tilt/shift lens.
Fujifilm GF 45mm f/2.8 R WR
Moderate wide angle equivalent to 37mm f/2.3..
Fujifilm GF 50mm f/3.5 R LM WR
Slightly wide compact normal lens equivalent to 41mm f/2.9..
Fujifilm GF 55mm f/1.7
State of the art normal lens..
Fujifilm GF 63mm f/2.8 R WR
Standard normal lens equivalent to 52mm f/2.3..
Fujifilm GF 80mm f/1.7 R WR
Standard normal lens equivalent to 66mm f/1.4..
Fujifilm GF 110mm f/2 R WR
Ultra high speed telephoto equivalent to 90mm f/1.6..
Fujifilm GF 110mm f/5.6 TS
Telephoto tilt/shift macro lens.
Fujifilm GF 120mm f/4 Macro R LM OIS WR
High performance macro photography on medium format, equivalent to 99mm f/3.3..
Fujifilm GF 250mm f/4 OIS R WR
Telephoto equivalent to 200mm lens. .
Nikon NIKKOR Z 20mm f/1.8 S
Fast ultra wide angle for Nikon Z..
Nikon NIKKOR Z 24mm f/1.8 S
Fast wide angle for Nikon Z..
Nikon NIKKOR Z 24-50mm f/4-6.3
Pancake zoom, wide angle to normal..
Nikon NIKKOR Z 85mm f/1.8 S
Fast portrait telephoto for Nikon Z..
Sony FE 24mm f/2.8 G
High performance, high speed..
Sony Planar T* FE 50mm f/1.4 ZA
Fast high performance normal lens of Zeiss design..
Sony FE 40mm f/2.5 G
High performance, high speed..
Sony FE 50mm f/1.2 GM
High performance, high speed..
Sony FE 50mm f/1.4 GM
High performance, high speed..
Sony FE 50mm f/2.5 G
High performance, high speed..
Sigma FE 14mm f/1.4 DG DN Art
Super-fast ultra-wide astrophotography lens..
Sigma FE 35mm f/1.2 DG DN Art
Ultra high speed native-mount moderate wide angle..
Ricoh GR
Razor sharp 28mm lens on APS-C sensor and outstanding usability and features..
Blog posts, reverse chronological
2023
2023-03-14 Lens Sharpness, and Why Optical Focus Shift is the #1 Suckiest Lens Compromise
2023-01-17 Sony FE 20-70mm f/4G: Appealing Zoom Range, How Good Will It Be?
2020
2020-07-07 Sony FE 12-24mm f/2.8 GM: will it be the ultra wide zoom I’ve been hankering for?
2019
2019-11-15 The Reality of Zoom Lens Performance
2019-09-07 Sigma 14-24mm F/2.8 DG DN Aperture Series @ 24mm: Teak Bench Closeup
2019-09-01 First Look at the Sigma 35mm f/1.2 DG DN Art: Lack Micro Contrast at f/1.2 and f/1.4
2017
2017-02-25 MTF for Fujifilm GFX GF Lenses
2016
2016-07-11 NEW Sony Planar T* FE 50mm f/1.4 ZA for Sony Mirrorless
2016-02-04 Sony Diffraction-Free Computed (not measured) Fantasy MTF Charts
2015
2015-01-26 What does 50 Megapixels mean vs 36 Megapixels?
2013
2013-07-18 Ricoh GR: Lens Quality and MTF
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$220 SAVE $130 = 37.0% Western Digital 16.0TB Western Digital Ultrastar DC HC550 3.5-in… in Storage: Hard Drives
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