This pages studies focus shift with the Canon 50mm f/1.2L.
An extensive array of focus distances each with the aperture series from ƒ/1.2 - ƒ/11 is presented in order to show:
- The shocking image sharpness differences caused by focus shift.
- That the 50/1.2L is a very sharp lens, but “in the wrong place” unless one compensates for the focus shift.
- That with increasing DSLR resolution, focus shift can be THE dominant factor in determining actual image sharpness.
Focusing and focus shift
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