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Archives for February 10, 2016

Another medium tele test — summary

February 10, 2016 JimK 7 Comments

This is a continuation of a test of the following lenses on the Sony a7RII: Zeiss 85mm f/1.8 Batis.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Sony 90mm f/2.8 FE Macro. The test starts here. I’d present the f/5.6 results, but I think you get the general… [Read More]

The Last Word

Another medium tele test — f/4

February 10, 2016 JimK 6 Comments

This is a continuation of a test of the following lenses on the Sony a7RII: Zeiss 85mm f/1.8 Batis.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Sony 90mm f/2.8 FE Macro. The test starts here. We’ll look can look at 300% center and corner crops  images from… [Read More]

The Last Word

Another medium tele test — f/2.8

February 10, 2016 JimK Leave a Comment

This is a continuation of a test of the following lenses on the Sony a7RII: Zeiss 85mm f/1.8 Batis.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Sony 90mm f/2.8 FE Macro. The test starts here. At f/2.8, we can look at images from all five lenses. In… [Read More]

The Last Word

Another medium tele test — f/2

February 10, 2016 JimK Leave a Comment

This is a continuation of a test of the following lenses on the Sony a7RII: Zeiss 85mm f/1.8 Batis.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Sony 90mm f/2.8 FE Macro. The test starts here. Now we’ll look at the centers and corners of all the lenses… [Read More]

The Last Word

Another medium tele test — f/1.4

February 10, 2016 JimK 32 Comments

A while back, I tested a group of medium telephoto lenses on the Sony a7II. The lenses in the last test were: Zeiss 85mm f/4 ZM (Leica M mount) Tele-Tessar.  Zeiss 85mm f/1.4 Otus. Leica 90mm f/2 Apo Summicron-M ASPH. AF-S Nikkor 85mm f/1.4 G. Tamron SP AF Di 90mm f/2.8 Macro. The Otus and… [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

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