the last word

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

  • site home
  • blog home
  • galleries
  • contact
  • underwater
  • the bleeding edge
You are here: Home / 2017 / April / Archives for 5th

Archives for April 5, 2017

Fujifilm GFX read noise and EDR

April 5, 2017 By JimK 6 Comments

Fujifilm GFX read noise and EDR

This is the 27th in a series of posts on the Fujifilm GFX-50S. The series starts here. This test almost didn’t get completed today. I had a big fight with RawDigger, and it won. Alex is helping me figure out what’s wrong, but in the meantime I ran it on another computer, where it worked… [Read More]

Is the GFX an all-rounder?

April 5, 2017 By JimK 3 Comments

From the mailbag: Been reading your experiments with the Fuji with fascination. I’ve been looking for a camera to supplement my Leica Q. Just can’t see spending $2k upgrading my Oly OMD for the new one. I always like traveling light but the Fuji and the Hasselblad got my attention. The question I have for you… [Read More]

Search this website
April 2017
S M T W T F S
« Mar   May »
 1
2345678
9101112131415
16171819202122
23242526272829
30  

Articles

  • About
    • Patents and papers about color
    • Who am I?
  • How to…
    • Backing up photographic images
    • How to change email providers
  • Lens screening testing
    • Equipment and Software
    • Examples
      • Good 100-400 zoom
      • Good 100mm lens on P1 P45+
      • Good 120mm MF lens
      • Good 18mm FF lens
      • Good 400 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 60mm lens on P1 P45+
      • Pretty good 16-35 FF zoom
      • Pretty good 90mm FF lens
      • Problematic 400 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
  • 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

  • CarVac on Sony A7III testing – and tribalism
  • Brandon Dube on Sony A7III testing – and tribalism
  • Lefteris on Improving D850 focus confirmation accuracy
  • JimK on Focus stacking with the GFX 50S — a demo
  • Arthur on Previsualization heresy
  • Arthur on Focus stacking with the GFX 50S — a demo
  • JimK on Light painting with the GFX 50S — a demo
  • Jack Hogan on Light painting with the GFX 50S — a demo
  • JimK on Previsualization heresy
  • Beverly Parks on Previsualization heresy

Archives

Unless otherwise noted, all images copyright Jim Kasson.