Bob Holtzman wrote:
What is needed for 11x14?
If you know in advance that you're going that big (or bigger), don't use
a digital camera. Use a lower-end digital camera to take a snapshot,
find the settings you like by taking a few shots (the main appeal of
digital cameras is instant feedback), then use an analog camera with
same settings to finish the job. You can then get the film processed,
printed and scanned onto a picture CD (here's your digital copy) and you
keep the negatives which you can 1) blow up to a pretty large size, and
2) re-scan for higher resolution later on, if you wish to. All of this
will cost less than having your digital photos printed out.
see http://www.kenrockwell.com/tech/free-digital-camera.htm
With digital, I'd say you need ~18MP to get the same quality as you
would with 3MP for 4x5.