Hi Frans, I am looking for a way to measure LoCA and came across your MTF Mapper. However, correct if I am wrong, I think your program is designed to work with a color sensor measuring the CA by using differences between the color channels. I am interested in measure LoCa from the UV through visible and into the NIR. I have various tunable light sources where I can illuminate a target with various wavelengths. Is there a way to use MTF Mapper over a wide range of frequencies? Perhaps measuring CA...