A short picture comparison from the 50mmm Zeiss Planar and the Apo Summicron(Camera & Photo“ target=“_blank“>Amazon).
The Apo Summicron costs about 10 times as much.
They are both shot with open aperture at F2. Both on a Leica SL body focused properly and with a shutter speed of 1/125s. No scientific test but should show how they compare in real world.
Can you see the difference in the low resolution pictures here?
Zeiss Planar 50mm f2 ZM at f2
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