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A history of Sony Alpha - Minolta AF 85 mm f/1.4 G D versus Sony Zeiss Planar T* 85 mm f/1.4

8. Vignetting

Minolta AF 85 mm f/1.4 G D – f/1.4	Zeiss Planar T* 85 mm f/1.4 – f/1.4
Minolta AF 85 mm f/1.4 G D – f/2.0	Zeiss Planar T* 85 mm f/1.4 – f/2.0
Minolta AF 85 mm f/1.4 G D – f/2.8	Zeiss Planar T* 85 mm f/1.4 – f/2.8

At the maximum aperture the Minolta’s brightness loss in the frame corners amounts to 39% (-1.42 EV) and the Sony’s result is by 2% higher. Taking into account the fact that the errors in this category reach 1-2% we consider it a draw. There is also a draw by f/2.0 where the Minolta’s light fall-off is 21% and the Sony’s – 22%. The same difference is by f/2.8 where we reach the results at the level of 6-7% so imperceptible in ordinary shots.