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Secondary Color Correction with Leica 90/2 APO, Zeiss ZM 85mm f/4 Tele-Tessar, ZM 85/2 Sonnar: Barn Interior (Leica M240)

In Guide to Leica:

Secondary Color Correction (“Purple Fringing”)

This f/2 - f/16 aperture series includes HD and UltraHD images with an evaluation of the relative performance of these three lenses for secondary color correction, namely the dreaded “purple fringing”:

  • Leica 90mm f/2 APO-Summicron ASPH
  • Zeiss ZM 85mm f/2 Sonnar
  • Zeiss ZM 85mm f/2 Tele-Tessar

Includes a discussion of the reasons for the effects.

Leica 90mm f/2 APO-Summicron-R ASPH
Zeiss ZM 85/4 Tele-Tessar
Zeiss ZM 85/2 Sonnar
(not to scale)

This backlit scene is a worst-case scenarior for “purple fringing”.

Barn Interior

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Voigtlander MACRO APO-LANTHAR 65mm f/2 Aspherical Lens for Sony E
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