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Relevant for: ImageMaster®
The depth of focus, is the extent of the region in front of and behind the image plane in which the image will appear to be sharp.
The depth of focus can be determined using a "through focus scan" of the MTF and setting appropriate tolerances for the drop in MTF. The depth of focus between the set tolerances will be measured and displayed.
A more complex measurement can be done simulating the range of object distances covered by the lens and measuring the MTF at the corresponding image distances.
Relevant for: ImageMaster® |