I use the histogram to determine if all the available data that I want in an image has been captured. And I know that in an image containing highlights and shadows, the "goal" is a representation of tonality that spans no lower than 0 and no higher than 255, subject to aesthetics.
My question has to do with images that have very little, if any, contrast; where the histogram "curve" is very condensed and narrow on the horizontal axis. In such a situation, should I add exposure to move the entire "curve" to the right, and as close to 255 as possible, or just the opposite, and to the left. I guess what I am asking is whether images with very little tonal range should be exposed to the left right or center for the purpose of post processing. Or, as may be the case, it matters not at all.
Thanks.
David