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the last word

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

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Archives for 2015

First post-op images

November 15, 2015 JimK 4 Comments

Since my brain surgery, the only photographs I’ve made have been from my studio window. I have made some, though, and the storm we had last week provided me some nice cloud shadows. All of these are several IR-modded Sony a7II  exposures blended together in Ps. Lens was the Otus 85/1.4.

The Last Word

Electronics in lenses

November 14, 2015 JimK 2 Comments

I posted a copy of yesterday’s blog post on the Sony alpha 7x forum on dpr. There were a couple of comments that I found interesting. The first related to the effect of in-lens electronics and software lens correction on the useful life of lenses. I admit to not considering that aspect when I made… [Read More]

The Last Word

Glass is forever… isn’t it?

November 13, 2015 JimK 2 Comments

There’s a saying in the digital era of photography: “You date cameras, but marry lenses.” There’s certainly a lot of truth to that. There’s another, stronger adage: “Glass is forever.” How true is that? I decided to investigate my equipment cabinets for clues. Let’s start with the oldest, if we don’t count the 5cm f/2… [Read More]

The Last Word

Why the hiatus?

November 6, 2015 JimK 52 Comments

You may have noticed that I haven’t posted anything recently. I have a really good excuse. I had brain surgery (removal of a benign tumor) on October 19th, at the University of California, San Francisco (UCSF) Parnassus Hill Medical Center. There is good news and bad news. The good news is that none of the… [Read More]

The Last Word

How big do I print?

October 19, 2015 JimK 2 Comments

In response to the question “how big you do print”, I provided this (for me, unusually non-technical) answer: I have an Epson 4900 and a 9800, so the largest print I can make at home is 44 inches wide, less three or four inches for the border. I’ve made 36×52 prints from a Nikon D3,… [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

  • JimK on How Sensor Noise Scales with Exposure Time
  • Štěpán Kaňa on Calculating reach for wildlife photography
  • Štěpán Kaňa on How Sensor Noise Scales with Exposure Time
  • 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?

Archives

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Unless otherwise noted, all images copyright Jim Kasson.