Originally published at: http://www.howtogeek.com/163049/how-to-enhance-your-black-and-white-photos-with-adjustment-curves/
Last week we showed you how to convert your color photos to black and white photos. While the tips and tricks we shared with you yield awesome results, we’re back this week to highlight some powerful techniques to take your image to the next level.
Is that "Mountain Range" looking thing in the background of the dialog the amount of each particular shade value in the photo?
Any suggestions for the best results to display pictures on an e-ink display like the Nook and Kindle?
Yes, it is a histogram of each particular shade (pixel intensity value) in the image. You can learn more about color curve histograms here: http://www.dl-c.com/histogram.pdf