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Emily writes: 5.5 x 6 at 300 dpi
Divide total pixels by dpi for decent print. Could be 200 or 300 for
a print that small.
Emily is quite correct - for
a straight print
but depending on the level of detail in the
image, it's possible with the appropriate RIP to print the image quite a lot
larger and have it look fine. RIPs (raster image processing) can be
hardware or software and can vary based on use - RIPs exist for a
variety of purposes, you'd need to look at a photographic
RIP. Software based RIPs can be quite simple but often expensive
.. hardware rips even more so, except that printers themselves have RIPs
onboard that often can do the job surprisingly well.
to use the RIP in the printer the technique is to
load the image in a *simple* image viewing program, even something like a browser, then select print and specify the size
you want the image to be - nothing more or less than that. The prinetr
it's self will apply the algorythms and fuzzy logic required to upsize the image
and produce the best image it can without pixellation.
Often this ability (the RIP at work) is mistaken
for a dpi setting below the normal quality barrier (300 ppi) - it's not usign a
lower ppi at all but rather an interpolation programmed into the printer.
Easiest way to see whether the printer can do a
good job is to print it and see if it looks good as mentioned
above.
If you're not impressed, try a trial, free or
commercial RIP and see if it can do better..
buty basically Lea if you start with a 1770 x 2041 image then as Emily said, without
introducing additional guessed data, 5.5 X 6 is as good as it
gets.
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