Summary: Looking at the specs on the Remote Control C and F versions, I can't find any difference. But even with shipping (check the vendors for this) the remote is less than half the price of the C model. It works. With my K20D it triggers any of the remote modes the camera offers, immediate fire, 3 second delay, or remote continuous shooting. It works fine in bulb mode, though there is no lock. You have to hold the button in. In the dark the range is almost 20ft.
Summary: This think is as big as a USB flash drive, but is very helpful. Every Pentaxian must have it. K20D has an infra red sensors on the front and on the back of the camera, so you do not need the expensive wireless one. The camera AF works well before taking the sot! Buy it!
Summary: This is a great item considering the price, size, and functionality. Don't forget the menu setting which allows auto focus to activate just before the images is taken. If you like expanding the capability of your Pentax DSLR without buying something expensive, you will definitely get alot of fun out of this tool.
Summary: This unit works well especially if you want to get in the picture and not play with the timer on your Pentax. It's very compact and fits easily in the palm of your hand so it won't be seen in the picture. My only minor disappointment is that it works via line of sight. My idea was to put my camera on a tripod next to a bird feeder and shoot away but the camera has to be facing me for the unit to work because the sensor is on the front of the camera.
Summary: I initially hesitated to order this remote since I wasn't sure it would properly function with a Pentax K200d dslr. It seems to operate the same as the newer and much more expensive 'F' remote unit. Refer to page 120 of the manual and use the Fn button. You have two choices: immediate shutter release or 3 second release. This particular item has the advantage of being significantly smaller and can find a convenient corner in my camera bag.
Summary: I got this for my ist DL. Works great within 15 feet. It does not come with an instruction manual; and I am saying that because there is a button other than the shutter release button thats function I am not sure of. There is probably on the net a PDF with the manual. The remote does not focus, it only releases the shutter. You can't beat the price of this accessory, it being around 85% cheaper than the remote control F. Get it while it is still available.
Summary: One thing you can't easily find in reading through Pentax's documentation is that this little remote will work as a trigger for your camera just as the Remote F will. That, and it will cost you a lot less. I can't say it is better or worse than the Remote F, but it has all the same functions. The only flaw maybe for those who use the added grip; this remote won't fit into the spot provided for a remote.
Summary: This little remote may be one of my favorite items on the Pentax K10 camera. It works very well, allows me to shoot from far and is so handy I could easily lose it. My only complaint is with the vendor who ships this as they seem to have a monopoly on price and inflate the cost through shipping. I ordered 2 remotes and paid $8 for shipping something that weighed less than 8oz total.
Summary: Small remote, about the size of a portable flash drive. Works well within 10-12 feet. Outside, you must be closer in my experience due to IR interference. For what I paid ($8.00 including shipping) I would but it again.