Optex 77mm Variable ND Filter brand_Fotodiox Please select the appropriate mounting

Please select the appropriate mounting hole for your intended lens/shutter

and it runs on 4AA batteries

there's a bit of flex in the legs that might get worrisome with really big stuff

A beautiful wood-and-metal camera in very nice shape

Optex 77mm Variable ND Filter brand_Fotodiox Please select the appropriate mountingThe Optex Variable ND is a good quality filter that lets you dial in between 1 and 8 stops of neutral density ideal for changing lighting conditions. For lenses with a 77mm filter thread. While the filter will screw onto 77mm filter threads, the front of the filter uses a 86mm thread. The filter uses hard stops on either end of the rotation, so you can feel when you reach each extreme. In excellent condition.