A digital back for a Hasselblad is beaucoup bucks; somewhere in the region north of $5000. This will give you 8-9 megapixels but on a CCD that just blows away the best of Nikon or Canon's efforts, even if they are talking 14-16 megapixels because of the much larger CCD in the Hasselblad back (I believe they are supposed to be somewhere near the 2"X2" format which is close to the native 2 1/4"X2 1/4" format)
The same probably applys for large format cameras such as Linhofs and Sinars. I have no idea of current prices but 2 years ago, the price for a digital 4"X5" back was in the $35,000 area with resolutions of around 10-12 Megapixels. I have absolutely no idea of how large the CCDs on these monsters would be. I do know they are special order items with a 90-120 day lead time and an up front deposit of 1/3 of the price required.
God only knows what a digital back for an 8"X10" would be but they do exist. My curiosity wonders what the file sizes would be in RAW or TIFF. I would expect a 1 GIG SD card would be pushed beyond its limits and you'd require a 4 GIG microdrive or better yet a direct download to a 200 GIG drive on a lap top. I wonder what the download times would be and the time between shots?
Boggles the mind; doesn't it. Don't even think of the digital equivalent of 16mm, 35mm or 70mm cine cameras. Sticker shock for those just might kill you.
[b]Dawg[/b] ]:)