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Blog Articles Medium Format Mirrorless L-Mount DSLR Zeiss Leica Making Sharp Images BW+IR

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

Understanding Modulation Transfer Function (MTF)

Understanding resolution and contrast graphs..

1. Fantasy MTF

Sigma 85mm f/1.4 DG HSM Art

Sigma’s best portrait lens..

1. Shootout: Sigma 85/1.4A (Two Samples) vs Zeiss Milvus 85/1.4 (Siemens Chart, Nikon D810)

Canon EF 11-24mm f/4L USM

Extreme wide angle zoom..

1. MTF for Canon 11-24mm f/4L

Canon EF 16-35mm f/2.8L III

Is the 3rd time the charm?.

1. MTF for Canon 16-35mm f/2.8L III

Nikon AF-S 300mm f/4E PF ED VR

Compact and lightweight travel-friendly telephoto..

1. MTF for Nikon AF-S 300mm f/4E PF ED VR

Fujifilm GF 23mm f/4 R WR

Ultra wide angle equivalent to 19mm f/3.3. .

1. MTF for Fujifilm GF 23mm f/4 R LM WR

Fujifilm GF 30mm f/3.5 R LM WR

Compact wide angle.

1. MTF for Fujifilm GF 30mm f/3.5 R LM WR

Fujifilm GF 30mm f/5.6 TS

Wide angle tilt/shift lens.

1. MTF for Fujifilm GF 30mm f/5.6 TS

Fujifilm GF 45mm f/2.8 R WR

Moderate wide angle equivalent to 37mm f/2.3..

1. MTF for Fujifilm GF 45mm f/2.8 R WR

Fujifilm GF 50mm f/3.5 R LM WR

Slightly wide compact normal lens equivalent to 41mm f/2.9..

1. MTF for Fujifilm GF 50mm f/3.5 R LM WR

Fujifilm GF 55mm f/1.7

State of the art normal lens..

1. Fujifilm GF 55/1.7: MTF

Fujifilm GF 63mm f/2.8 R WR

Standard normal lens equivalent to 52mm f/2.3..

1. MTF for Fujifilm GF 63mm f/2.8 R WR

Fujifilm GF 80mm f/1.7 R WR

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

1. MTF for Fujifilm GF 80mm f/1.7 R LM WR

Fujifilm GF 110mm f/2 R WR

Ultra high speed telephoto equivalent to 90mm f/1.6..

1. MTF for Fujifilm GF 100mm f/2 R LM WR

Fujifilm GF 110mm f/5.6 TS

Telephoto tilt/shift macro lens.

1. MTF for Fujifilm GF 110mm f/5.6 TS

Fujifilm GF 120mm f/4 Macro R LM OIS WR

High performance macro photography on medium format, equivalent to 99mm f/3.3..

1. MTF for Fujifilm GF 120mm f/4 R LM OIS WR Macro

Fujifilm GF 250mm f/4 OIS R WR

Telephoto equivalent to 200mm lens. .

1. MTF for Fujifilm GF 250mm f/4 R LM OIS WR

Nikon NIKKOR Z 20mm f/1.8 S

Fast ultra wide angle for Nikon Z..

1. MTF for Nikon NIKKOR Z 20mm f/1.8

Nikon NIKKOR Z 24mm f/1.8 S

Fast wide angle for Nikon Z..

1. MTF for Nikon NIKKOR Z 24mm f/1.8

Nikon NIKKOR Z 24-50mm f/4-6.3

Pancake zoom, wide angle to normal..

1. MTF for Nikon NIKKOR Z 24-50mm f/4-6.3

Nikon NIKKOR Z 85mm f/1.8 S

Fast portrait telephoto for Nikon Z..

1. MTF for Nikon NIKKOR Z 85mm f/1.8

Sony FE 24mm f/2.8 G

High performance, high speed..

1. MTF for Sony FE 24mm f/2.8 G

Sony Planar T* FE 50mm f/1.4 ZA

Fast high performance normal lens of Zeiss design..

1. MTF for Sony FE 50mm f/1.4

Sony FE 40mm f/2.5 G

High performance, high speed..

1. MTF for Sony FE 40mm f/2.5 G

Sony FE 50mm f/1.2 GM

High performance, high speed..

1. MTF for Sony FE 50mm f/1.2 GM

Sony FE 50mm f/2.5 G

High performance, high speed..

1. MTF for Sony FE 50mm f/2.5 G

Sigma FE 14mm f/1.4 DG DN Art

Super-fast ultra-wide astrophotography lens..

1. MTF for Sigma FE 14mm f/1.4 DG DN Art

Sigma FE 35mm f/1.2 DG DN Art

Ultra high speed native-mount moderate wide angle..

1. MTF for Sigma 35mm f/1.2 DG DN Art, Fantasy vs Reality

Ricoh GR

Razor sharp 28mm lens on APS-C sensor and outstanding usability and features..

1. Ricoh GR Lens MTF Analysis

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