OK Pascale, I found one compatible lens on the sony site (see link below) and it is a wide angle lens, kind of like the one I bought for my 8700 but a tad bit pricier for the Sony! I searched the site for accessories for both cams you mentioned the F717 and the F828. This is the only lens listed for the both of them, maybe the only lens that Sony manufactures for it...? The rest seem to be manufactured for camcorders! I think I would call them and specifically ask them about the lens that you have there. I know that when I purchased my wide angle lens for the 8700 I had to purchase an extension tube so that the lens inside could move in and out as it usually did when I shot. Let us know what you find out! Sony Lenses Brenda :)