Originally Posted by S3ason
The pictures are going up above my tv, so usually no closer then 4 feet or so, so it should be good enough. These are more for decoration then to showcase my work (I'm a pretty lousy photographer), so the quality was never a huge concern.
If you have a decent source image a 20x30 image from crop camera can be done and with decent results. They won't be museum quality prints or meet some peoples standards but I am happy with mine. I have two 24x36 canvas prints done, one from the 18mp 7D and one from a 15mp 50D. Both look fine to me and everyone else that has viewed them. Again I stress the importance of a good quality, sharp source file that is primarily un-cropped. See this post with some large prints from a 8MP camera (30D) that will meet most people quality standards.
I wonder too if canvas is a bit more forgiving than a glossy print. I have been tempted to get one of my canvas shots printed via normal means to 24x36 and see how they compare.
Now, all that being said, go to your local museum, photography gallery ect. and search out a few images printed to this size that were shot with a medium format or large format camera and you will see the quality Sub50 is talking about. Even smaller prints from these larger cameras are amazing. A gallery of yousuf Karsh's work came through Chicago awhile back and they are pretty amazing prints. Now there is also the film aspect, and some darkroom magic at play but if I had the time and money I would love to be able to produce B&Ws like that.