Summicron c 40mm adapter ring this hood is mounted to

this hood is mounted to the filter threads and allows the use of a 46mm filter as well

This hood also fits the RX1R II

Considerable smaller than Leica's offering

4 MC & SC M-mount Lenses

Summicron c 40mm adapter ring this hood is mounted toLeica did a dirty on us, they threaded this lens with a extremely rare 39mm thread, with a pitch of . 70mm, the standard 39mm filters have pitches of (. 50mm E39) and . 75mm (more modern thread for most Japanese cameras) Our adapter ring screws into the 40mm lens and then accepts a E39mm filter, meaning you can use your standard filters with this lens. The ring is solid brass with black paint and is a total of 6. 32mm in length, one screwed into the