Soft Box for Canon 580ex Flash Diffuser EOS Rebel Xt 400d Nikon D40 Olympus E400 E410 E500 Pentax K100ds Can be used on the Canon EOS Canon Rebel XT,400D Nikon D40, Olympus E400, E410, E500 Pentax K100Ds Giving even coverage across the entire frame, with lenses from 15mm to 200mm in the 35mm format. (And equal in other formats as well.)