Got a few hundred product photos to do. My lads bought a light box for them, but struggling to get a nice white background. We don't have photoshop. Anyone got any suggestions of a software that we use on windows 10pc to alter the yellowish or greyish backgrounds to white. Photoshop is an option, albeit barring the expense we are not familiar with it either, so ideally looking for a novice package. Our normal route wants an arm and a leg, so looking to do in house. Thanks edit - infact look at my avatar, the white background is similar to the floor under my car, when we want it to be as white as my car. The products are mostly graphite, so dark grey.