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

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Archives for 2019

Visibility of Nikon Z7 PDAF banding

February 24, 2019 JimK 4 Comments

Much has been made of the fact that most of the images posted on the web to illustrate the PDAF shadow banding in the Nikon Z7 involve aggressive pushes, and there are those who say that such pushes have no place in real-world photography, and that therefore the Z7 shadow banding is not an issue… [Read More]

Nikon Z6/7

Breakthrough Photography step-up rings

February 23, 2019 JimK Leave a Comment

Many of you know about Breakthrough Photography’s excellent filters. I use a lot of step-up rings, preferring to buy filters in 77 and 86 mm sizes. A few days ago I found out that Breakthrough makes such rings. I’ve never been completely satisfied with the brass rings from other vendors (and the aluminium ones are… [Read More]

The Last Word

ACR 11.2 Enhance Details — effect on details

February 17, 2019 JimK 8 Comments

Yesterday, I tested the ACR/Lr Enhanced Details feature’s effect on sharpness as measured by the slanted edge method, and found no effect one way or the other. Well, how can Adobe say that it enhances details? I set up a scene designed to provide a subjective test of detail rendering with a classic target, text…. [Read More]

The Last Word

ACR 11.2 Enhance Details — effect on sharpness

February 15, 2019 JimK 2 Comments

In their press release about the new Enhance Details feature in ACR 11.2 and the current Lightroom Classic CC release, Adobe said: Powered by Adobe Sensei, Enhance Details produces crisp detail, improved color rendering, more accurate renditions of edges, and fewer artifacts. Enhance Details is especially useful for making large prints, where fine details are… [Read More]

The Last Word

Adobe Camera Raw 11.2 “Enhance Details”

February 12, 2019 JimK 4 Comments

In today’s update to Camera Raw and Lightroom Classic CC, Adobe introduced a new feature. Here’s some of what they have to say about it: Enhance Details is introduced in Adobe Camera Raw 11.2. Powered by Adobe Sensei, Enhance Details produces crisp detail, improved color rendering, more accurate renditions of edges, and fewer artifacts. Enhance… [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.