Hello - I am scanning and reprinting some very old photos. I have some really old ones (one is a "tin-type" of my grandfather), and they have sepia tones. What is common when people restore photos? Do they keep the sepia tones or make take them to a black and white? I'm sure part of it is personal preference, but I think the sepia ones are charming and have lots of character. Any advice is appreciated. Thank you so much!