The other thing which one has to consider is the photo size. If one prints a photo within normal photo size, then the pixel number does not matter really. However, when it is the issue of printing photographs on canvas, then they do. To make big canvas photographs, one requires photos having high resolution. If a person only has two mega pixel cameras, one can still acquire a good canvas photo of small size. However, to have the bigger ones, one requires a camera having much more pixels. By having a camera of eight mega pixel, a person can have photo canvas in large size as well.
The technical issues regarding size and format also relate while printing the normal photos. However, the subject hush-up is a particular issue of photo on canvas. It is quite possible to purchase rolled photos on canvas, but one will have it wrapped over some type of wooden bars. Essentially, there are 2 types of wraps: Gallery wraps and Museum wraps.
Museum wrap is the approach as in the museums paintings are hung on the walls. Photo is printed over the canvas and a white region is also added to it. Canvas photographs are just the best option for the people if they wish to hang their pictures on walls. The main difference between gallery wrap and museum wrap is that in gallery wrap, there is no extra added white area. As an alternative, the photos border is wrapped about the edges and so print enlarges around the canvas sides. The gallery wrapped canvas is perfect, if one is planning to hang the photo not including a frame.