Optical Resolution Calculate optical properties of image sensor and lens combinations. Pixel Width Height Area Sensor Width Height Max. Chief Ray Angle (CRA) Width Height Diagonal Area Lens Focal length Aperture Numeric Aperture Wavelength Diffraction limited spot size Minimum resolution (Nyquist Limited) Minimum resolution (Diffraction Limited) Minimum optical resolution Horizontal field-of-fiew Vertical field-of-fiew Diagonal field-of-fiew Subject distance Circle of Confusion multiplier Circle of Confusion Hyperfocal distance DoF near distance DoF far distance Mount Flange focal distance Flange image diameter (CRA based) Notes Based on Optical Resolution of a Camera and Lens System CS-mount focal distance: 12.526 mm C-mount focal distance: 17.526 mm Micro Four-Thirds: 19.25 mm See also Lens mount at Wikipedia The Circle of Confusion used is equal to the circle inscribed in a pixel. Most online sources use a rather arbitrary factor of 4-5x pixel size. TODO: BFL and lens sizing calculations