the last word

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

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The new look

July 1, 2009 JimK Leave a Comment

We’ve got a new CPA web site. The new site has ditched the old red-on-black color scheme. I’ve changed web hosting companies. I’m still using WordPress for my blog software, but I don’t feel the need to match the colors of the old blog, which colors I chose to provide some continuity with the old… [Read More]

The Last Word

Droboing over the weekend

June 27, 2009 JimK Leave a Comment

I got an email from a Drobo tech yesterday afternoon telling me to install the 1.3.1 release of the Drobo firmware. I told him I’d already figured that out but that I couldn’t do it until the Drobo console recognized Drobo1. He called and said to try power cycling it without the USB cable attached,… [Read More]

The Bleeding Edge

The Drobo plot thickens

June 26, 2009 JimK Leave a Comment

I poked around on the Drobo support site until I found a firmware update that’s supposed to fix the Error 51 problems.  Unfortunately, the instructions only apply to updating a Drobo that the Drobo management software recognizes. I hadn’t heard from Drobo support this morning so I decided to try some things myself. I shut… [Read More]

The Bleeding Edge

More Drobo troubles

June 25, 2009 JimK Leave a Comment

I went to check on the server backups today and noticed that they had been failing for the last two days. Vice-Versa reported “target folder not found”.  It only seemed to affect one of the Drobos, Drobo1; unfortunately, that was the one with the most-rapidly-changing data. The Drobo management software reported that all was well…. [Read More]

The Bleeding Edge

Scanning vs Stitching

June 23, 2009 JimK Leave a Comment

I went to Monument Valley last weekend. It was just a quick trip, and with non-photographer friends along, I mostly just played tourist. I did take one camera, one lens, and no tripod. The camera was a 4000 by 6000 pixel 35 mm format digital. I amused myself by snapping off 6 to 12 picture… [Read More]

Technical, The Last Word

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Articles

  • About
    • Patents and papers about color
    • Who am I?
  • Good 35-70 MF lens
  • How to…
    • Backing up photographic images
    • How to change email providers
  • 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 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 Backing up photographic images
  • Jeff Wolford on Backing up photographic images
  • Barry Goyette on My lack of productivity
  • JimK on Scanning black-and-white negatives with a GFX 100S
  • Andrew Freeman on Scanning black-and-white negatives with a GFX 100S
  • JimK on Sony a7RIV continuous drive mode precision
  • Richard Creamer on Sony a7RIV continuous drive mode precision
  • JimK on Smallrig L-bracket for Nikon Z9
  • Petert Orr on Smallrig L-bracket for Nikon Z9
  • Christian on How fast is the Z9 shutter?

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Unless otherwise noted, all images copyright Jim Kasson.