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

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Nikon 135/1.8 Plena on Z7: corner Siemens star

July 29, 2024 JimK Leave a Comment

In the previous post, I showed you Siemens star images made with the Nikon 135/1.8 Plena on the Z7 with the star in the center of the frame. In this post, the images comes from the lower left corner. Edelkrone Tripod X Pro Arca Swiss C1 Manual exposure EFCS ISO 64 Delay set to 2… [Read More]

Nikon Z6/7

Nikon 135/1.8 Plena on Z7: on-axis Siemens star

July 29, 2024 JimK 2 Comments

I’ve had this lens a while, and it’s been great. I was recently asked to test it. So here goes. The particulars: Edelkrone Tripod X Pro Arca Swiss C1 Manual exposure EFCS ISO 64 Delay set to 2 seconds Six shots per f-stop Target centered Stops: f/1.8, f/2, f/2.8, f/4, f/5.6, f/8, f/11 Shutter speeds:… [Read More]

Nikon Z6/7

Nikon 58mm f/0.95 Noct: summary

July 27, 2024 JimK 18 Comments

LensRentals has loaned me a Nikon 58 mm f/0.95 Noct for testing. For the past couple of weeks, I’ve been reporting on the individual tests that I’ve been doing. The lens needs to go back soon, so it’s time for me organize my thoughts. This is an outstanding lens. I’ve worked with f/0.95 lenses before,… [Read More]

Nikon Z6/7

Nikon 58mm f/0.95 Noct on Z7: Illumination uniformity

July 15, 2024 JimK 5 Comments

LensRentals has loaned me a Nikon 58 mm f/0.95 Noct for testing. I tested for illumination uniformity at f/0.95, f/1.4, and f/2. I focused the lens on infinity, and made four exposures of a white wall about three feet away with the camera turned 90 degrees around the lens axis between each shot. I brought… [Read More]

Nikon Z6/7

Nikon 58mm f/0.95 Noct on Z7: Bokeh Examples

July 15, 2024 JimK Leave a Comment

LensRentals has loaned me a Nikon 58 mm f/0.95 Noct for testing.  In the previous testing, I found that this lens has outstanding far-out-of-focus bokeh. I made some images to let you all judge the transitional bokeh.             Looks great to me. The EFCS shading observed in the LED bokeh… [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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  • JimK on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF
  • Ivo de Man on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF
  • JimK on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF
  • JimK on Fuji 20-35/4 landscape field curvature at 23mm vs 23/4 GF

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Unless otherwise noted, all images copyright Jim Kasson.