Originally Posted by back alley
i ask because i am lazy and if it wasn't necessary for b&w then i would skip it.
Do you have a monochrom camera that gives you native b&w files or are you color files and convert them to monochrom images? Rethorical question...
You will get the best results if you process the color image first for acurate color and exposure and then convert the file to b&w. If you trust your camera and use the b&w jpgs, then forget about you asked about calibrating...