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Dots Per Inch (continued)
Conversely the 12 mega pixel
Canon Rebel XSi, shooting at its native high resolution jpg
setting of 4272 pixels x 2848 pixels (just like the enlarged Nikon
image mentioned previously) would print out to 53" x 68" --more
than 4 times larger than the Nikon!
Why? Because the Canon
natively shoots at 72 DPI. In other words, printing a 72 DPI
images yields larger results. This is often what confuses
beginning photographers.
So why not just always shoot at 72
DPI, and get the largest print possible? The answer is
quality.
A higher DPI setting
results in a finer quality print. Printers with
higher DPI's produce clearer and more detailed output. So
what it all comes down to is: what do you want to do with the
final print? If it's for home use, a 72 DPI image is
perfectly acceptable.
But if the output is intended for
publishers or stock agencies, professional photographers submit
their images at 300 DPI. In fact, the de facto standard among the
print industry is now 300 DPI.
This doesn't mean to imply that
the Canon Rebel isn't a suitable choice for professional
photographers. It merely means that a photographer sending
off images to a stock house would need to
"resize" images to 300 DPI first (in a program like Photoshop) prior to
submission in order to meet current publishing standards.
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