On Oct 4, 2006, at 4:26 PM, Pål Jensen wrote:

> How big enlargements can one expect to get out of a 10mp DSLR like  
> the K10D?
> A3 format?

I find 180 to 200 ppi produces very satisfactory rendering quality  
for A3 and A3 Super sized prints. A K10D body produces full-frame  
image with 2592x3872 pixels, which means a 180 ppi density print  
covers 14.5 x 21.5 inch image area, without upsampling or other  
interpolation.

If more print output density or a larger print is desirable, you  
upsample either in the RAW conversion processing or in post  
processing. You get no more detail but the rendering is usually  
smoother.

Godfrey
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