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the last word

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

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Wag the dog, part 4

July 8, 2011 JimK Leave a Comment

I did some lens testing this week: The Sony 16mm f/2.8 on the NEX-5 The 16-18-21 Tri-Elmar on the NEX-5 The 18mm f/3.8 Super Elmar-M on the NEX-5 and, just for completeness: The 16-18-21 Tri-Elmar on the M9 The 18mm f/3.8 Super Elmar-M on the M9 It wasn’t very formal, but was enough for me… [Read More]

Technical, The Last Word

Wag the dog, part 3

July 4, 2011 JimK 4 Comments

I got back from New York City yesterday – among other things, I was working on a new series done in the subway – and waiting for me was a new NEX-to-Leica-M-series adapter. This one was made by Novoflex, and it looks about the same as the RainbowImaging adapter, even though it costs almost 10… [Read More]

Technical, The Last Word

Wag the dog, part two

June 27, 2011 JimK 1 Comment

I’m a day into this experiment (using the Leica 16-18-21 mm Tri-Elmar on the Sony NEX-5), and I have good news and bad news. First, the good news: The lens is really sharp. That’s no surprise. What is a surprise is how little sharpness is lost because of the Sony’s antialiasing filter. The NEX-5 manual… [Read More]

Technical, The Last Word

Wag the dog

June 26, 2011 JimK Leave a Comment

What’s this? A multi-kilobuck lens on a body that costs a tenth as much! Isn’t that crazy? Maybe not. Put that lens on an M9 and you won’t be able to use the perfectly good focal lengths between the click stops (the Tri-Elmar is a real zoom lens) you won’t have live view for accurate… [Read More]

Technical, The Last Word

Setting rendering intent in PS, LR, & QI

June 25, 2011 JimK Leave a Comment

This post is to illustrate a point I made in a comment to the preceding post. If you’re not following that thread, don’t worry; you’re not missing much. Setting rendering intent in Photoshop: Setting color rendering intent in Lightroom: Setting color rendering intent in Qimage:

Technical, The Last Word

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Articles

  • About
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  • How to…
    • Backing up photographic images
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  • Lens screening testing
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    • Examples
      • Bad and OK 200-600 at 600
      • Excellent 180-400 zoom
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      • 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
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      • Two 15mm FF lenses
    • Found a problem – now what?
    • Goals for this test
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    • Test instructions — postproduction
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    • Theory of the test
    • What’s wrong with conventional lens screening?
  • Previsualization heresy
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  • Using in-camera histograms for ETTR
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    • 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

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