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the last word

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

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Fuji 45-100/4 vs 24-70/2.8 Nikkor S, Siemens star, part 3

February 28, 2020 JimK Leave a Comment

This is part 3 of a comparison of he Fuji 45-100/4 on the GFX 100 with the 24-70/2.8 Nikkor S on the Z7  at 45mm, 63 mm, and 100mm for the Fuji lens, and 35mm, 50mm, and 70mm for the Nikkor. This post will look at the 70/100mm shots. Here’s the test scene, with the… [Read More]

GFX 100, GFX 50S, Nikon Z6/7

Fuji 45-100/4 vs 24-70/2.8 Nikkor S, Siemens star, part 2

February 28, 2020 JimK Leave a Comment

This is part 2 of a comparison of he Fuji 45-100/4 on the GFX 100 with the 24-70/2.8 Nikkor S on the Z7  at 45mm, 63 mm, and 100mm for the Fuji lens, and 35mm, 50mm, and 70mm for the Nikkor. This post will look at the 50/63mm shots. Here’s the test scene, with the… [Read More]

GFX 100, GFX 50S, Nikon Z6/7

Fuji 45-100/4 vs 24-70/2.8 Nikkor S, Siemens star, part 1

February 28, 2020 JimK Leave a Comment

The Fuji 45-100/4 that I’ve been testing for the last week is an incredible zoom. It is running very close to, and may surpass, the Fuji 32-64/4, which is the second-best zoom I’ve ever tested. The 24-70/2.8 Nikkor S is the best 24-70 full frame zoom I’ve tested. It seems natural to pit them against… [Read More]

GFX 100, GFX 50S, Nikon Z6/7

Fuji 45-100/4 vs 45/2.8, Siemens star

February 28, 2020 JimK 3 Comments

I’ve tested the Fujifilm 45-100 mm f/4 against two other Fuji GFX zooms, the 32-64/4 and the 100-200/5.6. In this post, I’ll be comparing the lens to the Fuji 45/2.8 at f/4, f/5.6 and f/8. I’ll be looking at center and corner sharpness using a 22-inch-diameter low-contrast Siemens star target that I printed for this… [Read More]

GFX 100, GFX 50S, The Last Word

Fuji 45-100/4 vs 63/2.8, Siemens star

February 27, 2020 JimK 1 Comment

I’ve tested the Fujifilm 45-100 mm f/4 against two other Fuji GFX zooms, the 32-64/4 and the 100-200/5.6. In this post, I’ll be comparing the lens to the Fuji 63/2.8 at f/4, f/5.6 and f/8. I’ll be looking at center and corner sharpness using a 22-inch-diameter low-contrast Siemens star target that I printed for this… [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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  • JimK on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF
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