the last word

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Archives for 2021

Shutter shock in the GFX 100s

April 12, 2021 JimK 12 Comments

This is one in a series of posts on the Fujifilm GFX 100S. You should be able to find all the posts about that camera in the Category List on the right sidebar, below the Articles widget. There’s a drop-down menu there that you can use to get to all the posts in this series;… [Read More]

The Last Word

Fujifilm G lenses hotspotting at 720 nm

April 8, 2021 JimK 14 Comments

I keep being asked which Fuji G lenses hotspot and which don’t. I tested on a GFX 50R modified by LifePixel to respond to wavelengths longer than 720 nm. Here’s a table I made from the results: OK means no hotspotting, or very little. H means hotspotting that I consider to be unacceptable. I threw… [Read More]

GFX 100, GFX 100S, GFX 50S

Smallrig GFX 100S L-bracket

April 7, 2021 JimK 9 Comments

This is one in a series of posts on the Fujifilm GFX 100S. You should be able to find all the posts about that camera in the Category List on the right sidebar, below the Articles widget. There’s a drop-down menu there that you can use to get to all the posts in this series;… [Read More]

GFX 100S

The degradation of detents

March 31, 2021 JimK 4 Comments

In 1979, I went to The Audible Difference, a hi-fi store then located on Lytton Avenue in Palo Alto. I walked in barehanded, and walked out with a Threshold SL-10 preamp. My wallet was $950 lighter, but my spirits were soaring. I thought it was a breakthrough design, and I loved the way it sounded…. [Read More]

GFX 100S, The Last Word

Choosing CoC for precision photography in practice

March 30, 2021 JimK 9 Comments

I have written many posts about managing depth of field (DOF). I have related DOF to modulation transfer function, and developed a way to deal with it from that perspective. I have written a DOF optimizer program that balances the effects of geometrical DOF, diffraction, and capture pixel blur. I have explained how focus stacking… [Read More]

GFX 100S, The Last Word

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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

Category List

Recent Comments

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