Fig. 1

Concepts in digital frame camera photography: a Thin lens model and corresponding depth of field with focus distance (s), near and far depth of field limits (\(D_{{\text {N}}}\)/\(D_{{\text {F}}}\)) and imaged points (red, brown and green) on schematic drawing of sensor with size (\(S_{x'}\)) and number of recorded pixels (\(S_a\)) on x-axis, distance between pixel centers (\(S_\delta\)) and circle of confusion limit (c). b Same lens as in a but with closed aperture (N)