I am finally embarking on the huge project of scanning a lot of old slides (from 1960s & 70s) and making photobooks. I have a Nikon Coolscan film scanner with a Vuescan driver and it gives excellent results although of course adjustments, especially colour need to be done in Aperture. I need the output to be jpegs for the books but because they are so lossy I am scanning as tiffs with files of about 30mB. I am putting them on an external drive and then importing them into Aperture as a referenced library on the same external drive. Then when I have finished the adjustments I want to save them as jpegs in Aperture. Hopefully someone will know a better way to do this than I have found. The only way I have found is to export them as jpeg original size and put them on the desktop or back on the external drive as jpegs and then import them back into Aperture. This is very tedious and convoluted and means I have copies in Aperture and also in folders on the external drive. Is there another way to save jpegs from the tiffs straight into Aperture?

The jpegs from the tiffs are about 7Mb but the ones that can be scanned directly are only around 2Mb or less and then have to have adjustments made and lose pixels. I know that scanning as jpegs is the easiest thing to do but everything I've read says not to do it if one want to print decent sized images. But as I'm scanning at very high res. (4000) does this make enough difference so scanning jpegs is OK? Sorry I don't really understand the technical features of this.

I am also thinking of deleting the tiff files (in the interest of huge storage needs) when I have the new jpegs from tiffs in Aperture. Is this is a good idea?

I hope someone can give me some clues on this workflow - there is not much on scanning on AE but I have read it all. Thanks.