Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Steven 
Karafyllakis" <steve@s...> wrote:
> 
> Pixel dimensions on my Canon 5D (12.8MP about 42MB RGB) are: 4368 x 
> 2912. You need to feed an Epson a minimum of 200ppi to get good 
> image quality, that divides out to an image size of 21.85 x 14.56 
> inches. Un-interpolated, with no noise or "grain" up to ISO 400, 

I bet if the image is nice and sharp, and low in noise I can get those 
images up to 44x30 (interpolated of course) without a problem (little 
to no loss of detail). Focus is critical, and so is low noise. Jpeg 
artifacts will scream at you when you increase like that, so will noise 
blocks.