Zeiss ZF 85mm f1.4  vs.
Canon 85mm f1.2 L (Mark I)

Close Range Test Procedure

The following  tests results were assessed on a flat-field target, and were only possible with extensive and time consuming micro adjusted focus bracketing in which more than 100 RAW files were processed via Capture One. Apertures tested were f1.4, f2.8 and f8 using a Canon 5D. Lighting was via a single flash unit fired through a Cubelite. Focus confirmation was double-checked with a tape measure running diagonally through the plane of focus.

Full frame. Test sample areas highlighted in red.