Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not very good for DSLRs

I tried one on my Canon 7D DSLR camera. I found it a hassle to have to keep closing the hood to use the optical viewfinder and open it to check results. So I tried to remove the hood from the mounting bracket, but instead it pulled the adhesive mount off the LCD screen. It ended up tossed in the junk pocket of my camera bag. I haven't tried to mount it again. I consider it a failed experiment. Sure it would work okay with a point and shoot camera with no optical viewfinder. It opens and closes pretty quickly, and easily enough if you don't have to do it for every shot, or group of shots. For a DSLR it's just too much hassle.