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the last word

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

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Dr. Pratt’s developer

November 8, 2011 JimK Leave a Comment

In a previous post – you can see it here – I mentioned Dr. Pratt’s developer in passing. A web search for it yields no results. I’d like to give the formula and instructions for its use here, so that it becomes part of the collective cyber-consciousness. Dr. Pratt’s developer is a two-solution paper developer… [Read More]

Technical, The Last Word

30 Feet from your bed

November 3, 2011 JimK Leave a Comment

At the joint workshop with John Sexton, Ruth Bernhard gave the participants some advice — the same advice that she gave in the two previous workshops that I’d attended with her: Take photographs no more than 30 feet from your bed. It was not expressed as an exercise, but as a preferred way for an… [Read More]

The Last Word

Notes from a John Sexton/Ruth Bernhard workshop

November 2, 2011 JimK Leave a Comment

While I was working on the last post, I went through my notes from many of the workshops that I’ve attended. I thought you might be interested in my notes from the workshop I did with Ruth Bernhard and John Sexton. I think many of the points they made are universal, important, and timeless. A… [Read More]

The Last Word

Learning art while learning craft

October 31, 2011 JimK 1 Comment

A few weeks ago, someone remarked in the negative about the shortage of CPA workshops centered on developing artistic abilities. (Note to self: maybe there should be a future blog post analyzing why the people who help the most complain the least, and the people who stand on the sidelines complain the most.) I noted… [Read More]

The Last Word

The big lighting giveaway

September 20, 2011 JimK Leave a Comment

In my last post, I talked about some really bad lighting in a couple of movies from the 60s. Lighting has improved a lot since then, but there’s one place where, even today, almost nobody gets it right. Picture a scene. The hero and heroine are sitting by a window. He’s telling her some terrible… [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

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