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You are here: Home / Archives for GFX 50S

Leica Q2 Monochrom vs GFX 50S — red Siemens star

May 15, 2022 JimK Leave a Comment

This is the third post in a series about the Leica Q2 Monochrom. You can see all the other posts in the series by looking in the Category List drop-down menu on the right side of the page. Some people who read yesterday’s post asked about differences between the GFX 50S and the Leica Q2… [Read More]

GFX 50S, Leica Q2 Monochrom

Leica Q2 Monochrom vs GFX 50S — Siemens star

May 14, 2022 JimK 10 Comments

This is the second post in a series about the Leica Q2 Monochrom. You can see all the other posts in the series by looking in the Category List drop-down menu on the right side of the page. Aside from the one-stop increase in speed, which is undisputable, the putative advantage of monochrome capture is… [Read More]

GFX 50S, Leica Q2 Monochrom

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 2 Comments

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

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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

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