Originally posted by barondla Stormtech, gave up on remote F. 2" range and having to be lined up perfectly with rear sensor meant too many missed shots. Now using the Pentax weatherproof remote. It works 4-6" behind camera and doesn't have to be perfectly lined up. Also larger to hold in hand.
I went this route also, and have had success firing a Q from the back with this remote up to @ 4 feet from the camera, but aiming was extremely critical, and percentage of success at this distance was dismally low. As barondla suggests, 4-6" is a reasonable working range, and aim is not nearly as critical as with the F. The larger size, for me is an advantage since it will be less likely to be misplaced -- a particular problem with me.
It's not something that they're likely to change, but if they put a convex lens on the sensor, it would probably make the rear sensor more reliable and easier to use. Not complaining -- just including a rear sensor is really a thoughtful feature from a photographer's standpoint, and I appreciate it.
Scott