Quote Originally Posted by EASmithV View Post

Does anyone know of plans to build a simple shutter box for lenses like this, to give adjustable speed? Or even use of a handheld device such as an ipod or iphone as a controller?

I imagine these could be pretty accurate, and really open up shuttered lens options for 8x10, or 4x5 non-speed graphics.
This is only my 2 cents worth. But I have been using Packard shutters since 1947. I like the air release because it does not shake the camera. Instantanious is 1/25th (usually, shutter bulbs and hose varies this a little). If you open the shutter in bulb mode on the first letter of click-uh, and close it on the h, that's 1/10th of a second. click is about a fifth, one chimp is 1/2, one chimpanzee is a second. Practice with "one chimpanzee until the second hand of a watch or clock says you've used up one second. This air release has been used on these shutters for 120 years, and is still in use. Learn it, and love it!!