Jasper Engineering Stereo Photo Slide Bar  type_Measuring 8 ASPH is a fantastic

8 ASPH is a fantastic ultrawide lens for Leica M mount

with minimal cosmetic wear

with some cleaning marks and haze

The shutter system is still entirely mechanical- there's no place to put a battery even if you wanted to

it's out of the optical path and won't affect imaging

Jasper Engineering Stereo Photo Slide Bar &nbsptype_Measuring 8 ASPH is a fantasticThis Jasper Engineering slide bar is designed for stereo photography with matched cameras. It's 16" (about 40cm) long, with two sliding platforms, each with a 1 4" threaded camera mount. In good working order, with a small scrape at the corner of one rail end that does not affect function. Two camera platforms and one stopper block are included (both sides have an end stop.)