Hi David Thanks for your answer , my goal is to do art photography with the IR render like i used to do with my old Nikon F and the famous IR Kodak B&W film, But with a GH2 , and i find out that it is very difficult to get clear answers from people or shop who are converting the camera (i guess it normal, it is business and blablabla..) I found out a nice guy in HKong who can sell me a kit (a clear filter for replacement of internal IR filter and regular IR UV filter to put on the optics to get back on regular photography) , Spencer Camera, and Life Pixel are doing that either in USA, but i live in France and i want to do it by myself (they don't do that as i found out in France for the moment). I want the best non destructive solution, not necessarily the most expensive :-)) Obviously i agree to pay for the clear filter and the UV IR filters, "and the secrets" but i want to know where i go... I checked out the address you gave me in NJ, they also look ok, but quite expensive... Plus the fact, that if i can, i rather not send my camera overseas, but rather have them sending me the kit to france...I think they don't want to tell the customer the hole process, there is something about the white balance, which seems quite important - That is were i am... regards gB