This lens is undercorrected for spherical aberration. Has a slight focus shift towards the camera as you stop down. Slight- but there.
90/1.5 Mitakon, wide-open on the Nikon Z5.
My replacement for the Canon 85/1.5: Mitakon Speedmaster 90mm f/1.5
- Thread starter Sonnar Brian
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This lens is undercorrected for spherical aberration. Has a slight focus shift towards the camera as you stop down. Slight- but there.