Does anyone here know where to get these?
The cover is adjusted by twisting it.
BSA uses these on their scope and they look like a good idea.
One can limit the light coming from the corners and thus increase depth of field. Also works against heavy snow/rain better.
Fully closed they stop dirt from coming in.
The cover is adjusted by twisting it.
BSA uses these on their scope and they look like a good idea.
One can limit the light coming from the corners and thus increase depth of field. Also works against heavy snow/rain better.
Fully closed they stop dirt from coming in.
