Originally posted by Alizarine I'm not an expert with GPS devices but, does this make the Sony A77's built-in GPS ineffective? It's on the left-hand side of the body...
The suggestion I was responding to was to have the GPS device in an optional battery grip attached to the bottom of the camera. I can't see how the antenna for a GPS could possibly work when attached to the bottom of a metal DSLR case. The best location for the antenna is the top centre of the case - if the case is metal, locating the antenna anywhere else will result in skewed reception. If the antenna was in a battery grip attached to the bottom of the camera, reception would be poor, and you'd have to have extra connectors between the grip and the camera for the data connection to the GPS component. The antenna could presumably be in the side grip part, but it would just make more sense to put the GPS in the body of the camera to avoid these issues.