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28mm Shift Lenses: Table of Contents

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Main Page

  • How to read this article.  Notes on formatting of the article.
  • Introduction: prices, compatible cameras.
  • Sample variation

Handling and mechanical

  • Pictures of the lenses from various angles, showing mechanical operation and overall design.
  • Handling and mechanics
  • Operating issues

Focal-length Comparison

  • How much variation there is between lenses, both close and at infinity.
  • The results from Nikon Capture 4.3 “Chromatic Aberration Control”.

Frame alignment

  • Alignment of the edges of the unshifted and shifted frames.

Optical performance: Optical Alignment

  • Recognizing if the lens focal plane is not parallel to the film/sensor.

Optical performance: Shifted Image Quality

  • How the lenses perform at full shift.
  • Crops from all 5 lenses through f16.
  • Comparisons between the lenses in 3 areas of the frame.

Optical performance: Resolution Chart

  • Actual-pixels center and corner crops at all apertures through f16 for each lens.  Includes Nikon 28mm/f2 AIS and Nikon AFS 28-70/f2.8 EDIF as reference lenses.
  • Center and corner comparisons between the 5 lenses.
  • Assessment of Nikon Capture 4.3 “Chromatic Aberration Control”.

Optical performance: Color Fringing

  • Discussion and examples of chromatic aberration.
  • Discussion of “sensor blooming” as compared with chromatic aberration.
  • Evaluation of color fringing on all 5 lenses using field shots.

Optical performance: Color Rendition

  • Color rendering using Nikon AFS 28-70/f2.8 EDIF as the reference lens.
  • Color rendering in the center versus fully shifted using Macbeth Color Checker card.  Includes crops.

Optical performance: Distortion

  • Distortion quantified for all 5 lenses.
  • Stitched images (4 frames each) showing horizontal and vertical images for all 5 lenses—see it for yourself (includes large samples).

Optical performance: Flare

  • Flare with all 5 lenses.  Includes large samples for each lens from f5.6-f11.

Conclusions

  • Links to all the conclusions on the other pages.
  • A winner is chosen.