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the last word

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

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Archives for June 2017

And the winner is…

June 27, 2017 JimK 4 Comments

A few days ago, I posted a set of images that I’d entered in the CPA Member’s Juried Exhibition this year. I invited readers to pick their favorites (thanks to all who participated), and promised to report on what image the juror selected. This one: This is a synthetic slit scan over a period of… [Read More]

The Last Word

CPA JE 2017

June 25, 2017 JimK 5 Comments

I don’t enter many juried exhibitions but I make it a practice to enter one of the Center for Photographic Art exhibitions every year. I support the organization in many ways, and I do this to stay connected with them. I’ve been on the inside, and I’ve seen how arbitrary judging these things can be…. [Read More]

The Last Word

Sony a9 write speed & battery draw

June 23, 2017 JimK 4 Comments

This is the 25th in a series of posts on the Sony a9. The series starts here. There has been quite some controversy about the Sony a9 write speed with fast cards, with people having difficulty reproducing other’s results. Some of the problem has been with differences in methodology. I explained my current methodology in… [Read More]

The Last Word

Sony a9 write speed

June 13, 2017 JimK 7 Comments

This is the 24th in a series of posts on the Sony a9. The series starts here. When it comes to SD cards for the a9, there are two kinds of fast: On the right, a card that used to be the state of the art when it came to SD card speed. It’s rated… [Read More]

a9

Sony a7RII FW 4.0 star-eating

June 12, 2017 JimK 28 Comments

I interrupt the a9 experiments to bring you a special report on the new firmware release for the a7RII: 4.0. There have been several rumors floating around in cyber-space: The star-eating at exposures of 4 seconds and longer is fixed. The star eating is not fixed The star-eating is worse. The star-eating is now a… [Read More]

The Last Word

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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

  • Mike MacDonald on Your photograph looks like a painting?
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  • 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

Archives

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Unless otherwise noted, all images copyright Jim Kasson.