From top to bottom are at F/2, F/2.8, F/4, F/5.6, F/8, F/11, F/16.
Left 2 columns are sagittal and tangential at frame center.
Middle 2 columns are sagittal and tangential at 1/2 of frame.
Right 2 columns are sagittal and tangential at 3/4 of frame.
The number 36 means there are 3600 lines across the vertical of frame(each step is 300 lines).
Regarding the detail of the test procedure please reference to "鏡頭測試項目解說".
Comment:
The
resolution on the corner at full open aperture seems has a little blur,
but improved by shrinking aperture to F/4. The full frame optimum resolution is at F/5.6.
This is the checking of the 4 corner's sharpness(hit for the 1600 pixel picture):
This is the checking of the 4 corner's sharpness(hit for the 1600 pixel picture):
As you can
see there is no different between 4 corners. So this lens's corner
performance is very good, far better than the Voigtlander Ultron 28mm.
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