Tag Archives: luma

Bayer CFA Effect on Sharpness

In this article we shall find that the effect of a Bayer CFA on the spatial frequencies and hence the ‘sharpness’ information captured by a sensor compared to those from the corresponding monochrome version can go from (almost) nothing to halving the potentially unaliased range – based on the chrominance content of the image and the direction in which the spatial frequencies are being stressed. Continue reading Bayer CFA Effect on Sharpness

COMBINING BAYER CFA MTF Curves – II

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