DebAnn wrote:
I have a bit of a problem figuring out how to make a very large print using a shot from my Canon 70D which has 20.2 MP.
RAW size image is 5472 x 3648.
Assuming an image is well in focus, after processing in LightRoom, what is the optimum size I can export the image at 300 dpi before going to ON1 Resize and enlarging it to, for want of argument, something like 16" x 24" or larger?
Any help would be much appreciated. The techie stuff gets me every time.
You don't need 300 ppi.
Lightroom is a great program, but not for finishing. You can get more sharpness if you use On1's dynamic contrast and other detail enhancements. Many people love resize for making larger prints, but truth be told, 5472 x 3648 is more than enough for anything you want to do. Large prints are generally viewed at greater distances, and the eye cannot resolve 300 ppi fine detail at 10 ft, which is a good viewing distance for a 40x60 print.
This should help clear things up a bit.
a 16x24 only "needs" 80 ppi for the perception of sharpness, and your image size will provide 228 ppi, which is way more than you need.