I will offer 4 technical solutions: (1) Take a second mortgage and buy the Linhof Prontor Professional timer #022502 ($640 at B&H). (2) Find an old, used Autoknips timer 1/2-30 seconds mechanical shutter release. I found one for $30 on ebay. (Previous poster alluded to this device. Beautiful little German-crafted gizmos.) (3) Digital countdown timer from Radio Shack ($20). They are also sold in kitchen supply retailers. (4) "One-Mississippi, Two-Mississippi", ...
Bookmarks