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the last word

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

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Tribalism and Internet photo forums

February 20, 2015 JimK 5 Comments

Monterey, California has a rich and varied photographic history. To this day there are many serious photographic artists in the region. Living here, I get the chance to work with many of them. Photography is a technical pursuit. When you’re trying to make art, the tech stuff is the yin to the art’s yang. You… [Read More]

The Last Word

Lens quality and moderate-sized prints

February 19, 2015 JimK 5 Comments

Over on Digital Photography Review, a poster whose opinion I respect said something like: “Why are you thinking about buying really expensive lenses; you won’t see any difference unless you’re making five-foot prints.” I’d heard that before. I’d also heard that you could tell the difference between images from good lenses at screen resolution. Who… [Read More]

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More IR panos

February 18, 2015 JimK Leave a Comment

Three from this morning, exposed as the fog burned off.  

The Last Word

Conceptual photography

February 17, 2015 JimK 2 Comments

Sometimes we over-compartmentalize. For example, I remember a conversation at a cocktail party years ago: Me: “What do you do for a living.” He: “I’m an IC designer.” Me: “Digital or analog?” He: “They’re all analog.” I took his meaning. To you non-EEs out there, what he was saying is that, even in digital IC design,… [Read More]

The Last Word

Still more on adapter tolerance

February 16, 2015 JimK 20 Comments

More than a year ago, I wrote a post on lens adapter tolerance, bemoaning the fact that all the adapters that I’d tested were too short. I followed that up with a post about how, at least in the case of Novoflex, this was on purpose. As I continued to purchase adapters from various manufacturers,… [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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  • Javier Sanchez on The 16-Bit Fallacy: Why More Isn’t Always Better in Medium Format Cameras
  • Mike MacDonald on Your photograph looks like a painting?
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