Tag Archives: luminance


This is a vast and complex subject for which I do not have formal training.  In this and the previous article I present my thoughts on how MTF50 results obtained from  raw data of the four Bayer CFA channels off  a uniformly illuminated neutral target captured with a typical digital camera through the slanted edge method can be combined to provide a meaningful composite MTF50 for the imaging system as a whole1.  Corrections, suggestions and challenges are welcome. Continue reading COMBINING BAYER CFA MTF Curves – II

What Is Exposure

When capturing a typical photograph light from one or more sources is reflected from the scene, reaches the lens, goes through it and eventually hits the sensing plane. Continue reading What Is Exposure