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the last word

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

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Archives for February 2013

Raw processing workshop

February 28, 2013 JimK Leave a Comment

The CPA made this announcement today. I’m glad, because I can finally admit to why I’ve been deluging you with all the ETTR and related SNR-optimizing posts. I’ve been preparing my presentation, and I’ve been using this blog as my sketchpad. Thanks to everyone who aided me along the way. We had a similar panel… [Read More]

The Last Word

A medium-format camera in your jacket pocket

February 28, 2013 JimK 2 Comments

In the last few months, I’ve been examining ways to get the highest signal-to-noise ratio (SNR) in digitally-captured images.  I started with ETTR, then explored the issue of optimal in-camera ISO setting. Now I’d like to explore how to get your camera punching above its weight – producing images with the SNR of a larger… [Read More]

The Last Word

“In Motion” interview

February 26, 2013 JimK Leave a Comment

rfoto folio has just published an interview with me, mostly about the Staccato series that forms the basis for my half of the upcoming In Motion exhibition. That show opens at the CPA gallery in Carmel, CA on March 9, and runs through April 27. You can see the interview here. You can see the… [Read More]

The Last Word

A possible ETTR exposure algorithm

February 25, 2013 JimK 4 Comments

The following is at best half-baked. I need to experiment with it to see how good it is. I thought I’d share it with you anyway, since I often get good advice from you all. When figuring out an exposure strategy based on ETTR and the effect of in-camera ISO settings on signal-to-noise ratio (SNR),… [Read More]

The Last Word

ETTR and ISO settings

February 24, 2013 JimK 1 Comment

Over the previous 16 posts, plus the work that I‘ve done on expose-to-the-right (ETTR) (you can see it here), I’ve demonstrated – to myself, at least – several things: ETTR can produce low noise results when employed at or near the base ISO of the camera. It’s possible to mess with the camera settings, particularly… [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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