• site home
  • blog home
  • galleries
  • contact
  • underwater
  • the bleeding edge

the last word

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

You are here: Home / Archives for GFX 50S

Fuji 45-100/4 corner sharpness and field curvature

February 22, 2020 JimK 5 Comments

When I did my lens screening test on the Fujifilm 45-100 mm f/4 a few days ago, I noticed the corners were a bit soft wide open. Not soft for a zoom, mind you, but still substantially softer than the on-axis sharpness. I wondered if the softness was inherent in the lens, or was due… [Read More]

GFX 100, GFX 50S

Fuji 45-100/4, 100-200/5.6 on GFX 100

February 21, 2020 JimK 6 Comments

Earlier today I tested the Fujifilm 45-100/4 against the Fuji 32-64/4. Now I’m running another test, this one against Fuji’s other medium format zoom, the 100-200/5.6. The 100-200 has some issues between 135 and 200 mm, but is a good performer at the short end. I tested both lenses at 100 mm. The scene, at… [Read More]

GFX 100, GFX 50S

Fuji 45-100/4, 32-64/4 on GFX 100

February 21, 2020 JimK 3 Comments

The Fujifilm 32-64/4 is a great lens. Up until a few days ago, I said it’s the second-best zoom I’ve ever tested, bested only  by the Nikon 180-400/4, which is playing in a different league in both focal length and price. Since there is so much overlap between the ranges of the 32-64 and the… [Read More]

GFX 100, GFX 50S

Fuji 45-100/4 on GFX 100 — screening

February 20, 2020 JimK 2 Comments

The new Fujifilm 45-100 mm f/4 R LM OIS WR (hereafter yclept the 45-100/4) arrived today. I performed my usual lens screening test. Here’s the scene, at 60 mm. I moved the target as I changed focal lengths. Target distance varied between 28 and 40 meters. I made the exposures with the following setup: The… [Read More]

GFX 100, GFX 50S

Fuji 50/3.5 on GFX100, Sigma 35/1.2 on a7RIV

February 7, 2020 JimK 3 Comments

It’s a nice still morning, so I thought I’d test the new Fuji 50 mm f/3.5 on some foliage. For comparison, I chose the excellent Sigma 35 mm f/1.2 Art lens on a Sony a7RIV. Here’s the scene:   Making three shots for each variation and picking the sharpest, I exposed at base ISO 100… [Read More]

a7RIV, GFX 100, GFX 50S

  • « Previous Page
  • 1
  • …
  • 19
  • 20
  • 21
  • 22
  • 23
  • …
  • 46
  • Next Page »
May 2025
S M T W T F S
 123
45678910
11121314151617
18192021222324
25262728293031
« Apr    

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

  • bob lozano on The 16-Bit Fallacy: Why More Isn’t Always Better in Medium Format Cameras
  • JimK on Goldilocks and the three flashes
  • DC Wedding Photographer on Goldilocks and the three flashes
  • Wedding Photographer in DC on The 16-Bit Fallacy: Why More Isn’t Always Better in Medium Format Cameras
  • JimK on Fujifilm GFX 100S II precision
  • Renjie Zhu on Fujifilm GFX 100S II precision
  • JimK on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF
  • Ivo de Man on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF
  • JimK on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF
  • JimK on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF

Archives

Copyright © 2025 · Daily Dish Pro On Genesis Framework · WordPress · Log in

Unless otherwise noted, all images copyright Jim Kasson.