The operation should be practiced extensively, because it is not very intuitive. But if you have even understood the system, then (not so the device - otherwise it would be broken :-)) "that goes out of hand"
The large knob is centered as the trigger of the camera!
So half-press, then focuses on all camera (and the green light on the handset lights up) and then press on to the trigger. This feature is pretty cool! Normally you use this technique, the camera according to the "Sharpen" again align differently. But now you can set the focus and align the subject from another angle - not the camera. Tip: Does the time at night with a flashlight in front of the camera ... cool effects!
A "Fire and forgett" button (negative point of other Rezissionen) there are at this trigger only in the form of programming - (in 1sec make 1 image only 1 time).
It is not a simple remote control.
When he was understood, but it opens up many possibilities (solvent in 1,25min all 23sec 5,73min long 3 times out) - Warning: note exposure time :-))).