wildbill said:
adjustable up to 18 seconds and it says it works on any camera w/ mechanical cable release. How about large format lenses? Would i need a flexible extension?
http://www.bhphotovideo.com/images/largeimages/91940.jpg
Depending on how the shutter's configured, I don't know that I'd want a hunk of plastic and metal hanging off of the cable release socket of some LF shutters. With some shutters, though, it should work fine. (I have an old dial-set shutter that has the beefiest cable release socket I've ever seen...it'd probably be fine on that.)
I did use a device similar to this a few times in my college days. Mechanical self-timers have been around for a very long time. But during the golden days of 35mm, when almost every camera came with a self-timer, they became a bit less common. The one I used worked just fine (basically it's a spring affair that times winds down and then sticks the release pin out...not much to it).
I find it fascinating that all three that are for sale on the B&H site look like exactly the same device. I have a wonderful mental image of a small factory somewhere in eastern Europe where they make a run of these things once a year and then sell them off as the market requires them. I'm probably all wrong, but it's a nice mental image nonetheless.
(By the way, one of these timers got left on the moon. I can't remember which mission it was, but the astronauts had planned to take a picture of themselves together with their Hasselblad...given the "It was all faked" movement that's grown up I guess it's a good thing that they didn't find it in time to use it. Goodness knows where I read the story, but I'm sure a web search would find the relevant details.)