New answers tagged slr
Short answer : no, not possible. More elaborate : by principle an SLR camera shows "reality" in the viewfinder through a mirror, so you can't do any "processing" on that. However, nowadays there are hybrid cameras with electronic viewfinders (and still an interchangeable lens system) and liveview systems, so it might become possible. But I'm not aware of ...
Top 50 recent answers are included