I read a post that said sRBG was the best color profile for ibook. It is also the smallest gamut compared to Adobe 1998 or ProRGB. Is it really "the best" one to use?
Yes - that is the reason that it is recommended - user experience with Adobe RGB for example has been unsatisfactory
And note that iPhoto is a consumer product and the books are designed for consumers - I find them outstanding as do most users. Only you can choose what pleases you.
for more info on preparing your photo see -
http://www.apple.com/support/photoservices/preparation_tips/
Generally you will find that doing less editing and doing it in iPhoto will produce the best (yes - best does mean best once again) results
Also, can iBook printing support 16 bit files?
No idea
If the answers are yes to sRGB and no to 16 bit, does anyone have a suggestion for someplace else to have only one book printed? Thank you.
Google is a wonderful resource for things like this
LN