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the last word

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

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Archives for 2016

Dynamic Sony a7RII battery draw

November 1, 2016 JimK 11 Comments

This is the first of a series of posts on the dynamic behavior of the Sony a7RII battery drain. To navigate to all the other posts in the series, scroll down to the bottom of this page (below the comments) and you’ll find pingback links to each of them. A couple of weeks ago, I… [Read More]

The Last Word

A book report — portfolio image quality

October 29, 2016 JimK 19 Comments

This is part of a series about my experiences in publishing a book. The series starts here. A few days ago, I wrote a post about printing the images for the portfolios in the 50 boxed sets of the Staccato book. I received a comment questioning all the trouble I’d gone to to print the images… [Read More]

The Last Word

Sony a7RII shutter operation

October 27, 2016 JimK 1 Comment

I reported here on a7RII battery current draw measured statically. I have been working on developing ways to do dynamic measurements. I’m not there yet; I have been momentarily stymied by the camera’s apparent need for a low-resistance power supply when powering up, and I am having trouble providing such a low-resistance voltage source and… [Read More]

The Last Word

A book report — printing the portfolio images

October 25, 2016 JimK 3 Comments

This is part of a series about my experiences in publishing a book. The series starts here. As I’ve mentioned before, 50 copies of the book came in slipcases that Roswell made. The boxes also hold a folder that is meant to contain two actual inkjet prints from the Staccato series. For the past four days, I’ve… [Read More]

The Last Word

A book report — a look at the content

October 21, 2016 JimK 7 Comments

This is part of a series about my experiences in publishing a book. The series starts here. Here is a copy of the book in electronic form. Since so much of the book is setup with the image content spanning pages, I’m showing you double page spreads. I am quite surprised at how much the effect… [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

  • Javier Sanchez on The 16-Bit Fallacy: Why More Isn’t Always Better in Medium Format Cameras
  • Mike MacDonald on Your photograph looks like a painting?
  • Mike MacDonald on Your photograph looks like a painting?
  • 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

Archives

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Unless otherwise noted, all images copyright Jim Kasson.