Article: How to use lens filters on RICOH GR series
![RICOH GRシリーズでレンズフィルターを使用する方法](http://tokyo-grapher.com/cdn/shop/articles/DSCF2470.jpg?v=1679630626&width=2200)
How to use lens filters on RICOH GR series
A separate adapter is required to use a lens filter with the RICOH GR series.
The usable adapters differ depending on the GR series version, so please see below.
GRⅢ
RICOH genuine lens adapter [GA-1]
https://ricohimagingstore.com/lensadapter-ga-1-s0037817.html
It is possible to attach a wide conversion lens GW-4 with a magnification of 0.75x and a φ49mm filter.
GRⅢx
RICOH genuine Lens adapter [GA-2]
https://ricohimagingstore.com/lensadapter-ga-2-s0037826.html
It is possible to attach the teleconversion lens GT-2, which allows shooting at 75mm equivalent (35mm format conversion), and a φ49mm filter.
GRⅡ
RICOH genuine Hood & adapter [GH-3]
https://www.ricoh-imaging.co.jp/japan/dc/option/lens/
A set that includes a hood and an adapter for attaching a φ49mm general-purpose filter, etc.
GR DIGITAL III / DIGITAL IV
RICOH genuine Hood & adapter [GH-2]
https://www.ricoh-imaging.co.jp/japan/dc/option/lens/
This is a set that includes a hood and an adapter for attaching a φ43mm general-purpose filter, etc.
GR DIGITAL II / GR DIGITAL
RICOH genuine Hood & adapter [GH-1]
https://www.ricoh-imaging.co.jp/japan/dc/option/lens/
A set that includes a hood and an adapter for attaching a φ37mm general-purpose filter, etc.
Please see the RICOH homepage for details.