I'm a little confused by Apple's Photobooks. Most printers require all images to be in the CMYK colourspace, since the inks used are always CMYK. Yet Apple requires Photobook images to be jpegs in the RGB colourspace. Does this mean Apple's printers (presumably plural, since they are all over the world) do some sort of autoconversion RGB to CMYK? Surely this would result in a major downgrading of quality? I've seen a few non-Apple photobooks printed with unconverted RGB images, and they look dreadful - overblown red and yellows, with awful colour casts. I've not seen an Apple Photobook myself, presumably the colours are realistic?
Pro, Mac OS X (10.6.8), 13 in, Mid 2009, 4GB RAM