Optex 62mm Variable ND Filter grip it won’t take up a

it won’t take up a ton of space (it’s less than 12cm across)

designed for earlier Nikon cameras like the F/F2 Photomic and many Nikkormats

and if you're planning to load it up with the big stuff

500ml bottle

with USB charging cable and adapter

Optex 62mm Variable ND Filter grip it won’t take up aThe 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 62mm filter thread. While the filter will screw onto 62mm filter threads, the front of the filter uses a 72mm thread. The filter uses hard stops on either end of the rotation, so you can feel when you reach each extreme. In excellent condition.