I have an Ihagee Exakta Varex, with Zeiss Sonnar 50mm F2 lens. It has a unique feature, not found in other mechanical 35mm cameras (AFAIK), that is after 13 sec delay, the shutter can open from 0.5 sec to 6 sec long. This feathere is very useful for document copying or macro works. My Leica M5,M6 also have delay timer, but after approximatey 10 sec, the longest shutter automatic opening time is only one sec. if longer shutter time is needed, set the speed dial to T or B, then use a release cable and operate the shutter manually.