What does the lab mean by RAW data file?
Digital cameras can produce a proprietary file that is very rich in information. For the highest quality portraiture they are recommended. These proprietary file formats (nef, crw, dcr) need to be converted (similar to developing your film negatives) to a printing format (jpg or tif). This conversion (developing) process allows you to make adjustments to your file that result in a very high quality jpg/tif file to use for making your prints. Pechman has printing categories for taking this basic, first generation, unaltered jpg/tif file made from the initial conversion and then continuing the printing process. We can make all final color, contrast and retouching adjustments.