Hey! I'm new in stockphotography. I wanted to photo some objects at white background but I don't know how to edit it in GIMP (it's program quite similar to Photoshop). For example I had lemon photo (made in some kind of defuzing room and with light from 30 wat photographers lamp) but it's background is not quite white as I would want to. I think everybody understands me. Please be calmful for me. I'm new in editing photography. I've never need it.

Please answer

Michael from Poland

(sorry for my english)