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the last word

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

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Archives for May 2020

Dancing flowers and grasses

May 25, 2020 JimK 6 Comments

A few weeks ago, I showed  you some images I’ve been making in my studio by shining light through a Japanese bamboo sculpture. Last summer, I had been creating some heavily manipulated images by writing computer programs to perform distortion and fusing of conventional still photographs. I set that aside when I got involved with… [Read More]

The Last Word

Two digital camera color fallacies

May 16, 2020 JimK 25 Comments

Recently I’ve seen two kinds of posts that share the same fundamental flaw. This is not the first time I’ve seen either of these mental errors in action, and I’m sure it won’t be the last. I’ve had a hard time getting some of the people making the errors to see what’s wrong with their… [Read More]

The Last Word

Chronography video up

May 14, 2020 JimK 4 Comments

I was supposed to give a lecture on the Chronography exhibition that I think is still hanging at the Monterey Museum of Art, but Covid-19 intervened and I had to cancel it. As s sort of substitute, I took my PowerPoint slides and narrated about what I would have said into Adobe Audition, then put… [Read More]

The Last Word

May 2020
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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

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  • 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?
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Archives

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Unless otherwise noted, all images copyright Jim Kasson.