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

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Archives for 2016

Sony a6300 — pushing in post at higher ISOs, continuous shutter

March 18, 2016 JimK Leave a Comment

This is part of a long series of posts about the Sony a6300. The series starts here. In the preceding post, I posted three series of images leaving the exposure the same, varying the ISO in full stop intervals, and pushing the images in post to make them have equal brightness. I used continuous shutter… [Read More]

The Last Word

Sony a6300 — pushing in post at low ISOs, continuous shutter

March 18, 2016 JimK 2 Comments

This is part of a long series of posts about the Sony a6300. The series starts here. Yesterday I posted three series of images leaving the exposure the same, varying the ISO in full stop intervals, and pushing the images in post to make them have equal brightness. I used single shot shutter mode for… [Read More]

The Last Word

Sony a6300 — more pushing in post at higher ISOs, single shot shutter

March 17, 2016 JimK 1 Comment

This is part of a long series of posts about the Sony a6300. The series starts here. In the preceding post, I showed a series of images with identical exposures at decreasing ISO settings with pushes in post processing to make the brightness the same. I started at ISO 12800 and worked down to a… [Read More]

The Last Word

Sony a6300 — pushing in post at higher ISOs, single shot shutter

March 17, 2016 JimK 1 Comment

This is part of a long series of posts about the Sony a6300. The series starts here. Now I’m going to do a test similar to the one in the preceding post, except that I’m going to start at ISO 12800. That’s the first ISO where the camera does some big time spatial frequency for… [Read More]

The Last Word

Sony a6300 — pushing in post at low ISOs, single shot shutter

March 17, 2016 JimK 3 Comments

This is part of a long series of posts about the Sony a6300. The series starts here. So now I’m going to do a series like that of the preceding post, but with a big difference. I’m going to leave the exposure the same, vary the ISO in full stop intervals, and push the images… [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

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