Summary: I was using an Optio S5i mounted on a tripod in my car to capture video from motorsports. I bought this remote control because I was tired of reaching back to turn it on / off. It never worked. I searched for solutions, and could never get it working. What more is there to say? Waste of money. Maybe I got a bad unit, but who cares? I bought a ContourHD with a window mount instead.
Summary: I started using this as soon as it arrived and have not stopped... The only potential issue is that my camera has its IR reader in the front and I shoot from behind... IR bounces off of mirrors though. and I shoot reflective things... worked out for me.
Summary: This remote works great with my K-x. I am able to use it in bulb mode to keep the shutter open until you hit the button a second time to close it. It also has the option of keeping the shutter open for as long as you hold the button down. Many people have commented on the size, yes it is small but I doubt that I will loose it easily. If it was any bigger it would kind of seem silly as it only has one button.
Summary: Not too much to say about this - it works! It is very small and light - almost too small so you are definitely at risk for losing it! Still it works great for long exposures or self-portraits if you don't want to use the timer. I am using it with my Pentax K-r.
Excerpt: This is an essential piece of gear to go with a DSLR. The remote does what it is supposed to. I don't use a tripod without a remote, but you can also use it with the camera on the ground, etc. I agree with Emily above that it would be nice if it came with a little pouch that clipped to your camera strap so you would never forget it.
Summary: It's a simple and small remote, which I love, but considering it has one function, it's overpriced and doesn't perform as well as I'd like such as more range. Suites my needs well though so I'm very happy with it.
Summary: Got this as a gift and was surprised how small it is. It is about the length of my thumb, and the thickness of a couple of stacked coins. Basically, smaller than a car alarm fob. It has one button to control the shutter, depending on how you set your camera. With my K-x, it will either hold the shutter open while you hold the button, or toggle the shutter open/closed with each press.