Tool to calculate Signal to Noise Ratio for different situations and cameras

[drbacke]

I've written a small tool to calculate the Signal to noise Ratio for different cameras an situations. If you want to, try it and tell me how it works for you:
http://drbacke.de/2016/03/07/test/
Here are some explanations and examples:
http://drbacke.de/2016/03/05/signal-zu-rauschverhaeltnis-tool-fuer-anfaenger/

Hope it will help you to understand more an get better images, but it's in german language