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

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Archives for 2013

Traveling with the Leica M240, part 12

October 23, 2013 JimK 1 Comment

Coda For the past series of posts, I’ve been enthusing about the Leica lenses. Here’s an example of what I like so much that I think will come across even at web resolution: 1950s fire truck, Summerside, Prince Edward Island. 90mm Summicron, f/13 @ 1/45, ISO 200. It’s not that the lens is just sharp…. [Read More]

The Last Word

Traveling with the Leica M240, part 11

October 22, 2013 JimK Leave a Comment

Summary At the end of a camera review, the reader usually asks, “Do you recommend buying one?” My answer is always, “It all depends.” That’s true in spades for the M240. Let’s deal with the easy case first. If you’ve got an M8 or M9 and a lot of Leica glass, and want any or… [Read More]

The Last Word

Traveling with the Leica M240, part 10

October 22, 2013 JimK Leave a Comment

Being an engineer, I always have suggestions for improvement when I first encounter a camera. Here are some that don’t change the basic gestalt of the M240. UI changes requiring new hardware ISO, exposure compensation, etc. buttons on the left top of the camera. There’s plenty of room. Combine with B&W reflective-mode LCD display a… [Read More]

The Last Word

Traveling with the Leica M240, part 9

October 21, 2013 JimK Leave a Comment

I’m getting to the end of this series of posts. I have a few more small things to say and then I’ll sum up. Freeze ups There have been complaints about M240 freeze-ups, some of which can only be resolved by removing the battery. I’ve not seen these. I have observed a repeatable freeze-up, and… [Read More]

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Traveling with the Leica M240, part 8

October 21, 2013 JimK Leave a Comment

Panoramics Making images for stitched panos with the M9 was an exercise in frustration, unless you kept the sequences to 6 or 7 images. The buffer would fill up and you’d have to wait what seemed like forever between shots, during which time, the light would change, the wind would blow, and your subject would… [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
    • 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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