When using a matte box as clip-on, step down rings can be necessary, with or without thread. This ring is required when using a MB-2xx matte box (with 114 mm front diameter) as a clip-on on a lens with internal M72 thread.
When using a matte box as clip-on, step down rings can be necessary, with or without thread. This ring is required when using a MB-2xx matte box (with 114 mm front diameter) as a clip-on on a lens with internal M72 thread.