What if a laptop is weight and battery life prohibitive? My MacBook Pro weighs as much (alone) as a fairly full medium format system (about 7 lbs is similar to a M645 AFDII, 2 lenses and a back). It also only runs for 3 hours on a fairly heavy battery, and is more delicate than any piece of photo equipment. All in all, not an ideal traveling companion. What to bring if a laptop isn't in the cards? Is there any trustworthy card reader gizmo? Or is a fistful of 8 gb cards (which have gotten fairly cheap) a better idea? Even 16 GB cf cards, which promise a LOT of images, even from a back, are only $300 apiece... Uncompressed P45 raw files (the worst case I can think of) are still only 80 MB, and their compressed raws are around 40 mb each, so 200 -400 or so fit on a 16 gb card...
-dan