The various reviews that you have to hold down the shutter just before the camera directly because it does not trip otherwise, I can not confirm. The angle is surprisingly large. Of course, when using a 500mm telephoto, which covers half the body, you might get with a direct connection to the receiver problems. With my Tamron SP AF 17-50mm Di II VC 2.8 (Image Stabilizer) digital lens for Canon, which is already slightly larger than the kit lens, the shutter certainly works wonderfully from all directions.
I subtract a star because the battery compartment system rüber- with tiny lever and at the same time is another lever advance suicidal.