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the last word

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

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Archives for 2020

Chronography video up

May 14, 2020 JimK 4 Comments

I was supposed to give a lecture on the Chronography exhibition that I think is still hanging at the Monterey Museum of Art, but Covid-19 intervened and I had to cancel it. As s sort of substitute, I took my PowerPoint slides and narrated about what I would have said into Adobe Audition, then put… [Read More]

The Last Word

A new series

April 28, 2020 JimK 11 Comments

Some of you have noted that I haven’t posted in a while, and have asked about my health. I’m fine. Well, I’m fine physically, but I’m worried about what’s ahead, as I’m sure many of you are. I have been working on a video version of the Chronography lecture I was going to give at… [Read More]

The Last Word

Sony a7RIV continuous drive mode precision

April 6, 2020 JimK 13 Comments

A reader asked a question about the Sony a7RIV.  I have a question for clarification. You use the terms “continuous mode,” “continuous compressed,” and “continuous uncompressed.” When I read the Sony A7Riv instruction manual (p.42) it uses the words “Continuous Shooting” to represent 4 different shooting speeds: “Continuous Shooting: Hi+,” “Continuous Shooting: Hi,” “Continuous Shooting:… [Read More]

a7RIV

Fuji 23/4 on GFX 50R, 20/1.8 Nikkor S on Nikon Z7

April 3, 2020 JimK 12 Comments

A reader and landscape photographer, impressed by how well the 20 mm f/1.8 performs on the Nikon Z7, asked if he’d really be much better off with the Fuji 23 mm f/4 on a GFX 50x. Let’s take a look, with the Fuji lens on a GFX 50R. Here’s the scene, with both cameras at… [Read More]

GFX 50S, Nikon Z6/7

14-30/4, 20/1.8 Nikkor S on Nikon Z7 — foliage

April 2, 2020 JimK 1 Comment

A reader asked me to test the new Nikon 20 mm f/1.8 against the 14-30 mm f/4 Nikkor S zoom when it’s set to 20 mm. Here’s my distant foliage test on the two. Here’s the scene, with both lenses wide open on a Nikon Z7:   Corner falloff is similar. Here’s the test protocol:… [Read More]

Nikon Z6/7

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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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