To sort out the pixelation, you need to increase the maximum texture resolution and interpolation settings for the renderer you chose in preferences /viewport
I usually stick to 16 pixels as a minimum and fill whatever deadspace there is with padding. This might help: http://wiki.polycount.com/wiki/Edge_padding
I suppose a 16 bit per channel camera and a filter that picks the subrange to be displayed according to the average brightness of the surrounding pixels.