I use the IR remote shutter release for nearly a year, mostly as a substitute for the self-timer for group photos or as anti-shake performance with stand-long exposures. The device in combination with my Nikon D5100 was simple: Switch to remote control shooting mode and press the button - done. Both the front and the back-IR receiver easy collaboration, partly due to more than 10 feet away. Depending on the situation, you have two or three times, press, but he has abandoned me not yet, battery replacement was not necessary. Autofocus and "continuous fire" (ie bracketing and Co) are not a problem.
Overall, at the price so unbeatable, a comparison to a brand product, I did not. Would I get me again at any time.