Hope I explain this well... I am a bit of a newbie when it comes to photo editing of any nature, so I'm really hopeful that this isn't some impossible request. I have seven photographs of various objects, all taken in a light box, that I was hoping to use as thumbnails on a website. Despite my best efforts with the light box, all of them images are just different enough to not look good together... The biggest issue is the background. Every one is a different shade of off-white based on the brightness of the photo. Is there any way to adjust the brightness or contrast or something in a way that each of the images will end up with the same color background?