L Loswr Guest May 27, 2013 #21 May 27, 2013 #21 rpt said: The lens is shaped such that the focus of an image on the sensor or film is done for a plane parallel to the plane of the receptor. Click to expand... Correct - the lens is designed to project a flat image onto the image plane. However, not all lenses are perfect - when a lens doesn't project a flat image, it's called field curvature. The 24-70/2.8L (MkI) has that problem. Upvote 0
rpt said: The lens is shaped such that the focus of an image on the sensor or film is done for a plane parallel to the plane of the receptor. Click to expand... Correct - the lens is designed to project a flat image onto the image plane. However, not all lenses are perfect - when a lens doesn't project a flat image, it's called field curvature. The 24-70/2.8L (MkI) has that problem.
