I recently had a 40" x 30" B&W canvas print made after I obtained a voucher to have it done for $90 + $10 postage. The image came from a 2005 vintage Canon 350D that had been cropped down to just under 7MP to match the required aspect ratio. I'm really happy with how it turned out and it seems faithful to the digital file in terms of contrast and shadow/highlight detail. For those in Australia the company was Mojopro. They appear to have deals fairly regularly so next time I'm going to try one in colour and see how it goes. Probably not 1m wide, though; I only have so many walls...