I need to take photos of approximatly A3 size at 300 dpi, would either of these cameras do this, and which one would be better for large high quality photos (one has a larger sensor size but the other one has more megapixels):
cannon EOS550 - 18 MP, 22.3 x14.9 sensor size, ISO sensitivity 100-6400, max shutter speed 1/4000 sec
or
nikon d3100 - 14 MP, 23.1 x 15.4 mm sensor size, ISO sensitivity 100-3200, max shutter speed 1/4000 sec
cannon EOS550 - 18 MP, 22.3 x14.9 sensor size, ISO sensitivity 100-6400, max shutter speed 1/4000 sec
or
nikon d3100 - 14 MP, 23.1 x 15.4 mm sensor size, ISO sensitivity 100-3200, max shutter speed 1/4000 sec