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the last word

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

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Archives for 2018

Silent shutters and psychology

August 25, 2018 JimK 3 Comments

Before SLRs were the predominant big-boy cameras, shutters were reasonably quiet. The leaf shutters in press and view cameras, as well as those in twin-lens reflexes like the Rolleis, were unobtrusive. Even the focal plane shutters in the Nikon, Canon, and Leica rangefinder cameras weren’t that bad. Then the flapping mirror made its entrance, and… [Read More]

The Last Word

Bracketing

August 9, 2018 JimK 3 Comments

Back when I was using 4×5 and 8×10 sheet film, if I really cared about an image, I would make two identical exposures. I’d make the first normally, then flip the film holder over and do it again. When I developed the film, I’d sometimes do all of one side of the holders in one… [Read More]

The Last Word

a7III exposure management example

August 3, 2018 JimK 7 Comments

This is one in a series of posts on the Sony a7III. You should be able to find all the posts about that camera in the Category List on the right sidebar, below the Articles widget. There’s a drop-down menu there that you can use to get to all the posts in this series; just… [Read More]

a7III

Goodbye to the darkroom sink

July 30, 2018 JimK 4 Comments

I moved into my present house in 2000. When construction started, I was still doing some chemical photography, so I put in a darkroom and moved my 1980’s era Cal Stainless sink in. By the time I got settled — oh, that punch list — that phase of my photographic life was waning rapidly. I hardly… [Read More]

The Last Word

Comparing a7RIII, D850, and D5 sensitivity

July 29, 2018 JimK 5 Comments

This is one in a series of posts on the Sony a7RIII. You should be able to find all the posts about that camera in the Category List on the right sidebar, below the Articles widget. There’s a drop-down menu there that you can use to get to all the posts in this series; just… [Read More]

a7RIII, D850

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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

  • JimK on Calculating reach for wildlife photography
  • Geofrey on Calculating reach for wildlife photography
  • JimK on Calculating reach for wildlife photography
  • Geofrey on Calculating reach for wildlife photography
  • 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?
  • Mike MacDonald on Your photograph looks like a painting?
  • bob lozano on The 16-Bit Fallacy: Why More Isn’t Always Better in Medium Format Cameras
  • JimK on Goldilocks and the three flashes
  • DC Wedding Photographer on Goldilocks and the three flashes

Archives

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Unless otherwise noted, all images copyright Jim Kasson.