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You are here: Home / Archives for GFX 50S

Fuji 30 mm f/3.5 screening test

July 23, 2020 JimK Leave a Comment

The Fujifilm 30 mm f/3.5 lens plugs a big hole in the G-mount prime lens stable, sitting as it does between the 23 mm and 45 mm lenses. In terms of landscape mode vertical angle of view, it’s the equivalent of a 22 mm f/2.5 lens. It has been anticipated eagerly by the GFX community,… [Read More]

GFX 100, GFX 50S

Fuji GFX auto focus bracketing step size

June 30, 2020 JimK 2 Comments

There’s a new mode in the firmware released today for the GFX 50S, 50R, and 100: auto focus bracketing. You set the near distance, the far distance, and the interval, and the camera bangs away between those focal points. But what does it use for a step size? Using a GFX 50R and the 23mm… [Read More]

GFX 100, GFX 50S

How focus-bracketing systems work

June 28, 2020 JimK 19 Comments

I’ve done a lot of testing of the focus bracketing (Fujifilm’s name for it), and focus-shift shooting (Nikon’s) on the GFX 50S, the GFX 100, the Z7 and the D850. I expected that the users of these systems would  be people who did focus bracketing or focus-shift stacking manually, and they wanted some way to… [Read More]

GFX 100, GFX 50S, Nikon Z6/7

Fuji 23/4 on GFX 50R, 20/1.8 Nikkor S on Nikon Z7

April 3, 2020 JimK 12 Comments

A reader and landscape photographer, impressed by how well the 20 mm f/1.8 performs on the Nikon Z7, asked if he’d really be much better off with the Fuji 23 mm f/4 on a GFX 50x. Let’s take a look, with the Fuji lens on a GFX 50R. Here’s the scene, with both cameras at… [Read More]

GFX 50S, Nikon Z6/7

Field Curvature on the Fuji 45-100/4

February 29, 2020 JimK 1 Comment

Inspired by Hamiltonian on DPR, I applied Roger Cicala’s field curvature visualization method (Photoshop: Filter -> Stylize -> Find Edges) to the 45-100/4, at putative focal lengths of 45, 60, 80, and 100mm:       Top left is 45mm, top right is 60mm, bottom left is 80mm, and bottom right is 100mm. The top… [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

  • 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
  • Ivo de Man on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF

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