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Canon Full Frame Test: Zeiss ZF 25mm Distagon

Zeiss ZF 25mm f2.8 v Canon 24mm f1.4 L


Chromatic Aberration

Both lenses suffer from chromatic aberration, in different ways. The Zeiss picks up some red/purple fringing at f2.8 and f4, with either adaptor tested. Here the Canon (topmost image) is clean . . .

Chromatic Aberration Test 1

It's fairly prominent here at f2.8 in the Zeiss image. The Canon shot is on the left . . .

Chromatic Aberration Test 1

The Zeiss' lateral CA persists all over the frame, not just in the corners. The purple fringing is still evident at f4. The Canon by contrast has slightly stronger CA when stopped down. The following samples at at f11. Again the Canon samples are on the left.

Chromatic Aberration Test 3

Chromatic Aberration Test 4

I don't think we can declare a winner in this category: both lenses are affected to some extent: the Canon suffers a little more at small apertures, the Zeiss in the f2.8–f4 range.

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