I had until now a cable release for which I had to be very careful in handling (long exposure astrophotography and repetitive). Today I have an accessory that allows me to define at the outset the number of poses, duration, frequency and starting the program without further intervention until the end of the cycle and regardless of its duration. Very convenient and it leaves me plenty of time to focus on something else during that time. And all this for a fraction of the cost the same brand equipment (Canon).
