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the last word

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

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Archives for 2013

A new series, day 2

November 1, 2013 JimK Leave a Comment

Yesterday was my second day at the fire house. I took a different lens: a Nikon 105mm f/2.8 macro. It will allow me to include more area in the somewhat tight station confines, and also get more magnification should that prove useful. It’s also much lighter and easier to work with than the Sigma 180mm… [Read More]

The Last Word

A new series?

October 31, 2013 JimK Leave a Comment

One of the stops on my recent Canadian trip was on Prince Edward Island. We docked at a little town called Summerside, which, with its beautiful Victorian and Edwardian houses and stately buckeye trees, reminded me of the best parts of growing up in the Midwest in the 1950s. There was a celebration of some… [Read More]

The Last Word

A stripped-down M-series Leica

October 28, 2013 JimK 1 Comment

I had fun with the last post, but now it’s time to get real. What should the purist, stripped-down expression of the Leica rangefinder experience be? Here’s a proposal: Lose the LCD display on the back of the camera. It makes it thicker and heavier than it has to be, so that it doesn’t feel… [Read More]

The Last Word

Designing the new M-series Leica

October 26, 2013 JimK 2 Comments

There’s a controversial thread over on the L-camera forum.  The  topic is what the next Leica M-series camera should be. There are two diametrically-opposed approaches: a) build a thoroughly modern camera that takes the M lenses, or b) provide the best expression of the gestalt of the film-era Leica M’s. My own personal desire is… [Read More]

The Last Word

Flattening the visual field

October 25, 2013 JimK Leave a Comment

Usually you think of a long lens flattening perspective. Sometimes, all it takes is a lack of visual clues. This image was made with an 18mm lens on a M240: I think it works read as a flat subject, and also as two 90-degree planes that join 60% of the way across the image. The… [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

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