Originally Posted by Polwart
then you'll need to get a new camera if you want to print big pics. "normal" prints (e.g. 6x4)will probably be OK but even at A4 sort of size you are likely to be looking a bit crap.
Agreed. Remember that 'pooter screens are typically 72 dpi resolution. Inkjet printers are consderably finer resolution. I don't imagine your camera can shoot RAW images, but if so, then do so. Thee contain the greatest amount of data. Jpegs are compressed files and the image suffers accordingly....
The best thing to do is try it and experiment. The nice thing with a poster is that one looks at them from a distance, so they are perhaps a titch more forgiving...