Filters for the Ricoh GR: 49mm, through the right adapter

Every current GR body accepts ordinary 49mm screw-in filters, but only once the correct model-specific adapter is fitted. Get the adapter right and filter choice is wide open.

The thread is the same on every camera. The adapter that carries it is not — Ricoh states in writing that the GA-1 will not fit a GR IIIx, and the GA-2 will not fit a GR III.

Item	Fits	Confirmed by
Any 49mm screw-in filter (ND, UV, CPL, black mist)	Ricoh GR II, Ricoh GR III, Ricoh GR IIIx, Ricoh GR IV	Ricoh says so

What to watch out for

Any 49mm screw-in filter (ND, UV, CPL, black mist)

Every GR back to the GR II takes ordinary 49mm filters — but only through the adapter, and the adapter is model-specific. Get the adapter right and any 49mm filter works.
Adhesive stick-on filters are widely reported to pull the front lens panel off when removed. Owners have needed the panel reattached.
The GR IV and GR IIIx HDF have a built-in highlight diffusion filter; adding a mist filter on top is usually redundant.

Check against your body

I have a

Sources

Confirmed against a primary/manufacturer source.

Last verified 2026-08-29.