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You are here: Home / Archives for GFX 100

Fuji 35-70 GF transfocal bokeh

January 10, 2022 JimK Leave a Comment

There are two important aspects to bokeh. It seems most people, when they hear the word, think immediately of the look of parts of the scene that are for out of focus. That’s a good thing to think about when buying, selecting, or using a lens, but the, ahem, focus, of today’s post is going… [Read More]

GFX 100, GFX 100S, GFX 50S

Field curvature in the Fuji GF 35-70, part 2

January 3, 2022 JimK 2 Comments

In a previous post, I tested the field  curvature of the Fuji 35-70 GF using Roger Cicala’s quick and dirty method. A reader said he was having difficulty with what appeared to be field curvature in the corners. That gave me an idea for a modifications of Roger’s test. I rolled the camera so that… [Read More]

GFX 100, GFX 100S, GFX 50S

MTF50 and microcontrast of Fuji 35-70 GF

January 3, 2022 JimK Leave a Comment

I finally got around to doing some quantitative tests on the Fuji 35-70 GF. This is the first of several posts with the results of those tests. Here’s the test protocol: RRS carbon fiber legs C1 head 35, 45, and 70 mm focal length Target distance as per the table below ISO 100 Electronic shutter… [Read More]

GFX 100, GFX 100S, GFX 50S

GF 35-70 and 32-64, foliage, corner

January 1, 2022 JimK Leave a Comment

  In the previous post, I compared the Fuji 35-70 GF against the 32-64 GF using foliage as the subject. I looked at the center of the images there; now I’ll look at the corner performance. I set up the GFX 100S as follows: RRS 4-series Versa legs Arca-Swiss C1 2-second self timer ES ISO… [Read More]

GFX 100, GFX 100S, GFX 50S

GF 35-70 and 32-64, foliage, on axis

January 1, 2022 JimK 2 Comments

  I set up on one of my usual foliage test scenes, shown here with the 35-70 at 35 mm wide open.   I set up the GFX 100S as follows: RRS 4-series Versa legs Arca-Swiss C1 2-second self timer ES ISO 100 AF-S for three shots, picking the best sharpness in post; this calibrates… [Read More]

GFX 100, GFX 100S, GFX 50S

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Articles

  • About
    • Patents and papers about color
    • Who am I?
  • Good 35-70 MF lens
  • How to…
    • Backing up photographic images
    • How to change email providers
  • 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 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

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