the last word

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

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Other people’s blind spots

December 6, 2008 By JimK Leave a Comment

It’s bad enough that you get trapped by your own blind spots, but it gets worse: it’s all too easy to become the victim of somebody else’s. A couple of months ago, I suggested that workshops were a good way to see how other people do things, and perhaps discover the existence of mental door… [Read More]

Knowing too much

November 8, 2008 By JimK Leave a Comment

Last month I wrote about blind spots. I’d like to take another shot at the subject, but from a different angle. Before I attained the exalted status of full-time photographer-and-general-layabout, I was an electrical engineer. I worked in different areas: speech recognition, data acquisition and process control, telephone systems, data networking, control networking, and color… [Read More]

Blind Spots

October 17, 2008 By JimK 3 Comments

Warning: the photographic part of this month’s blog is preceded by a long non-photographic introduction. Feel free to skip ahead. I’ve been shaving for more than 50 years now. During that time, not much changed. Sure, I’ve always used the latest razors — usually from Gillette. The shaving cream, always from an aerosol can, has… [Read More]

An invitation

September 23, 2008 By JimK Leave a Comment

I received an email a couple of weeks ago inviting me to participate in a CPA photographic exhibition. The particulars were unusual. Kim Weston curating an exhibition of photographs made or selected in response to a Robinson Jeffers poem. The instructions were to a) pick a Jeffers poem or fragment, b) create or find three… [Read More]

POD specifics

August 13, 2008 By JimK Leave a Comment

I promised some specifics about my POD experiences. Here we go. I have produced books using both MyPublisher and Blurb, running both of the downloadable page layout aps on Vista. Some of my experiences, especially regarding fonts, may not apply to the Mac OSs. MyPublisher has a few advantages over Blurb: The big books are… [Read More]

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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
  • 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 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 Zeiss Batis 135 on Nikon Z7
  • Maurin on Zeiss Batis 135 on Nikon Z7
  • Scott Pilla on GFX Natural Live View and raw file histograms
  • Macro Guy on THoS: a NYT infinite loop
  • JimK on Sony 135 mm STF on GFX 50R
  • Alexander Häggström on Sony 135 mm STF on GFX 50R
  • Mike King on Metabones 1.26x Expander on GFX 100 with Otus 55
  • JimK on Diffraction and sensors
  • Barry Benowitz on Diffraction and sensors
  • Raymond on Fuji 45-100/4, 100-200/5.6 on GFX 100

Archives

Unless otherwise noted, all images copyright Jim Kasson.