| As Noelf says, most old "sepia" pictures aren't sepia at all - they've just turned yellow with age. Customers tend not to realise that, though. Generally, trying to maintain a sepia/yellow tone throughout the restoration is too difficult, so it's best to do the restoration in true black and white and then if desired you can apply a sepia tone at the end.
With the picture you posted, you'll find that if either take the Red channel alone, or put a Channel Mixer on top with Red +200, Green -100, Monochrome box checked, it will significantly improve the level of damage you need to go in and correct manually -- there will still be a fair bit to do and you'll need to tweak Levels, but it shouldn't be too bad. Overall you should get good results on this picture - it's god a good range of tones preserved and the grain isn't particularly visible. |