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the last word

Photography meets digital computer technology. Photography wins -- most of the time.

You are here: Home / Archives for GFX 100

Adobe Super Resolution

March 13, 2021 JimK 5 Comments

Adobe has introduced a new feature in Camera Raw 13.2. They call it Super Resolution. I’ll call it SR here. SR is a demosaicing technique that produces an output image with twice the number of pixels as the raw file in both dimensions. That means the file as four times the number of pixels of… [Read More]

GFX 100, The Last Word

GFX Natural Live View and raw file histograms

February 24, 2021 JimK 9 Comments

I received a request investigate whether the histogram in the GFX cameras when the display mode is set to “Natural Live View” faithfully represented the raw histogram. Spoiler alert. It does not, at least in all circumstances. I’d never paid any attention to that mode before. I looked it up in the GFX 100S searchable… [Read More]

GFX 100, GFX 50S

Leica 90/2 Apo-Summicron ASPH-M on GFX 50S

December 23, 2020 JimK 2 Comments

The M-mount Leica 90 mm f/2 Apo-Summicron is a special lens. Almost as expensive as the Otus 85/1.4, it doesn’t quite measure up to the Zeiss lens in the standard lens quality metrics. But in spite of — probably because of — its optical deficiencies, it does a superb job of rendering some things. In… [Read More]

GFX 100, GFX 50S

Infrared hotspotting

November 17, 2020 JimK 4 Comments

Yesterday, I received a Fujifilm GFX 50R back from LifePixel, who had modified it with a 720 nm infrared conversion. The modification consists of the removal of the IR-blocking filter — aka hot mirror — and its replacement by a filter that blocks visible light and passes infrared light with wavelengths shorter than about 720… [Read More]

GFX 100, GFX 50S, The Last Word

Fuji 30/3.5, 32-64/4 on GFX 50x, foliage

July 26, 2020 JimK Leave a Comment

This is a continuation of a series of tests on the new Fujifilm 30mm f/3.5 G-mount lens. Today I’m comparing it with the Fuji 32-64 mm f/4 zoom. I did this earlier with a Siemens Star target, which is unforgiving; it was designed to be so. What if we just aim the camera at some… [Read More]

GFX 100, GFX 50S

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Articles

  • About
    • Patents and papers about color
    • Who am I?
  • How to…
    • Backing up photographic images
    • How to change email providers
    • How to shoot slanted edge images for me
  • Lens screening testing
    • Equipment and Software
    • Examples
      • Bad and OK 200-600 at 600
      • Excellent 180-400 zoom
      • Fair 14-30mm zoom
      • Good 100-200 mm MF zoom
      • Good 100-400 zoom
      • Good 100mm lens on P1 P45+
      • Good 120mm MF lens
      • Good 18mm FF lens
      • Good 24-105 mm FF lens
      • Good 24-70 FF zoom
      • Good 35 mm FF lens
      • Good 35-70 MF lens
      • Good 60 mm lens on IQ3-100
      • Good 63 mm MF lens
      • Good 65 mm FF lens
      • Good 85 mm FF lens
      • Good and bad 25mm FF lenses
      • Good zoom at 24 mm
      • Marginal 18mm lens
      • Marginal 35mm FF lens
      • Mildly problematic 55 mm FF lens
      • OK 16-35mm zoom
      • OK 60mm lens on P1 P45+
      • OK Sony 600mm f/4
      • Pretty good 16-35 FF zoom
      • Pretty good 90mm FF lens
      • Problematic 400 mm FF lens
      • Tilted 20 mm f/1.8 FF lens
      • Tilted 30 mm MF lens
      • Tilted 50 mm FF lens
      • Two 15mm FF lenses
    • Found a problem – now what?
    • Goals for this test
    • Minimum target distances
      • MFT
      • APS-C
      • Full frame
      • Small medium format
    • Printable Siemens Star targets
    • Target size on sensor
      • MFT
      • APS-C
      • Full frame
      • Small medium format
    • Test instructions — postproduction
    • Test instructions — reading the images
    • Test instructions – capture
    • Theory of the test
    • What’s wrong with conventional lens screening?
  • Previsualization heresy
  • Privacy Policy
  • Recommended photographic web sites
  • Using in-camera histograms for ETTR
    • Acknowledgments
    • Why ETTR?
    • Normal in-camera histograms
    • Image processing for in-camera histograms
    • Making the in-camera histogram closely represent the raw histogram
    • Shortcuts to UniWB
    • Preparing for monitor-based UniWB
    • A one-step UniWB procedure
    • The math behind the one-step method
    • Iteration using Newton’s Method

Category List

Recent Comments

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  • bob lozano on The 16-Bit Fallacy: Why More Isn’t Always Better in Medium Format Cameras
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  • Wedding Photographer in DC on The 16-Bit Fallacy: Why More Isn’t Always Better in Medium Format Cameras
  • JimK on Fujifilm GFX 100S II precision
  • Renjie Zhu on Fujifilm GFX 100S II precision
  • JimK on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF
  • Ivo de Man on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF

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Unless otherwise noted, all images copyright Jim Kasson.