Originally Posted by
drtebi
Trying to revive an aging thread...
I have been making a few preliminary and very rudimentary tests with a Ricoh GXR camera with the 50mm Macro lens and APSC sensor, "scanning" medium format negatives and positives.
I am confused about something:
According to DP Review, they conclude that the lens has a 0.4% barrel distortion. But when I open the same film-scanned image (Minolta Dimage Multi Pro) and layer the camera-scanned image on top, resize, center, and rotate the images appropriately, then it appears that the Ricoh has a pincushion distortion?? That is assuming that the scanner does not distort anything, which I assume it shouldn't.
Is this possible? Did I miss the point of distortion somewhere?
Confused.
Bookmarks