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

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Archives for December 2021

Fujifilm GX 100S Pixel Shift dynamic range

December 15, 2021 JimK 7 Comments

I have previously demonstrated the dynamic range increases that come with Sony a7RIII pixel shift. A Facebook user said that there were no similar improvements with Fuji’s GFX pixel shift. That didn’t fit with what I remembered, but I hadn’t done any quantitative testing. So I thought I’d rectify that. I made single and pixel… [Read More]

GFX 100S

4×5 Tmax 100 with a Nikon Z7, enhance details

December 3, 2021 JimK 3 Comments

In the last post, I showed you images that resulted from scanning 4×5 TMax 100 negatives with a Nikon Z7 in this setup: The results were good enough for excellent 17×22 inch prints, but there was more in the negative than the camera could resolve, which we saw by loking at better-quality scans using the… [Read More]

GFX 100, GFX 100S, Nikon Z6/7

Scanning 4×5 Tmax 100 with a Nikon Z7

December 2, 2021 JimK Leave a Comment

The last four posts have shown you the results of scanning one 4×5 TMax 100 negative with the GFX 100S. What happens if we try to use a lower resolution camera like the Nikon Z7? That’s what this post is about. Here’s the scanning setup with the Z7 attached: From left to right: Light source… [Read More]

GFX 100, GFX 100S, Nikon Z6/7

Visibility of scanning differences in C-size prints

December 1, 2021 JimK Leave a Comment

In the last three posts, I looked at different ways to scan black and white negatives with the GFX 100S. All used stacking. The differences boiled down to: Straight single shot Pixel shift Two-shot stitch Yesterday I printed copies of the best versions of all three images on C-size (17×22 inch) Epson Legacy Baryta paper,… [Read More]

GFX 100, GFX 100S

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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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Archives

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