Please Note: For all 4 color work please supply CMYK files at 300 dpi. Lower dpi (resolution) will reproduce blurry images. Files which are supplied as RGB will require conversion to CMYK in order to print them. Conversion always changes the colours, sometimes slightly, sometimes significantly. We recommend that you purchase a colour proof, regardless of size, to show you the result before we print. The image you see on your screen does not necessarily represent the printed result.