Huw Evans , Oct 03, 2000; 01:36 p.m.
Well, here's my rough answer: in round figure an 8x10 negative is about 200x250 mm. If we say that a good B&W film is capable of resolving well over 100lpm (again, just round figures), then you need at least 200 pixels per mm. LF lenses won't match that resolution, but you'll still need it to replicate the tonal gradation.
That gives 200x200x250x200 = 2 billion pixels. That is 200 times the size of that 10Mpixel chip, and that is almost certainly an underestimate!
Not only that, but I think I'm right in saying that each pixel uses several bytes for 24-bit colour rendition, and it's clear that for an uncompressed image you will need several GigaBytes of storage. I hate to think what the power supply would be like.
So, if my arithmetic is right, and you're planning that week-long photographic trip into the backwoods with current digital technology, you'd better hire half a dozen pack mules and a portable generator!