An example and model of integral non-linearity and column ADC mismatch effects in CMOS Image Sensors. A short function aiming to give a rough overview of INL and column mismatch effects on images in a column-parallel ADCs in CMOS Image Sensors. For now it works only with 8 bit images. Some bugs in the file read functions, not supporting all image formats could be existent. Link to the code in Matlab Central.