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the last word

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

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Archives for October 20, 2013

Traveling with the Leica M240, part 7

October 20, 2013 JimK Leave a Comment

A case study When I was on Campobello Island, I was able to visit a “cottage” right next to FDR’s 34-room one. One of the remarkable things about the dining room was the picture window, and, of course, the view. Here’s an image made with the 18mm Super-Elmar, f/5.6 @ 1/180, ISO 200, exposed for… [Read More]

The Last Word

Traveling with the Leica M240, part 6

October 20, 2013 JimK Leave a Comment

Size and weight One eternal virtue for a travel camera is small size and light weight. The M240 is smallish by DSLR standards, and the lenses are much smaller than the best-performing DSLR lenses. Weight is not so clear-cut. An M240 with strap, battery, SD card, RRS grip and plate, 18mm Super-Elmar, hood, lens cap,… [Read More]

The Bleeding Edge, The Last Word

Traveling with the Leica M240, part 5

October 20, 2013 JimK Leave a Comment

Ray-angle problems Because of the short flange distance of the M-series Leicas, there have been difficulties with situations where the light from the lens intercepts the sensor at angles greatly different from ninety degrees. This occurs at the edges (normally mostly the short edge) and corners of the image, and can be pronounced for short… [Read More]

The Last Word

Traveling with the Leica M240, part 4

October 20, 2013 JimK Leave a Comment

Frame lines The finder frame lines in the M240 are illuminated from within the camera, rather than from a window cut into it. That means that they don’t dim when a shadow falls over the window. Good. That means that they can be white or red (I like red). Also good. That also means that… [Read More]

The Last Word

Traveling with the Leica M240, part 3

October 20, 2013 JimK Leave a Comment

Moire I’ve been making images for a year with the D800E, and moire is almost never a problem. With no anti-aliasing filter, cameras like the D800E and the M240 tend to have more moire as the pixels get larger and the lenses get sharper. The M240 has a 6 micron pixel pitch compared to the… [Read More]

The Last Word

October 2013
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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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  • Ivo de Man on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF

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