I am planning on doing a large canvas print on my wall and have found some confusion. (before I go on I am planning on using the sponsors and am happy with their tests).

The photo I have was taken on the 1ds, an 11mp full frame image done taken with mirror lock up etc. Upon talking to the guy he suggested the image doestn have enough pixels to blow up to the size I want. Essentially suggesting that at 100d/p Id be limited to 40inches.

What I wanna know is, what can I do to ensure a large print will come out well. Does extrapolation improve this chance.

If the answer is no, then I am confused in his logic that effectively for example my s95 with similar mp should be as good at printing large regardless of the sensor size.

Can someone spell it out for me or at least give me their point of views or experience with large canvas prints.

Thanks in advance Adam