Nikon HN-1 lens hood brand_Calypso this ring complements the BR-2

this ring complements the BR-2 reversing ring (not included) by mounting to the end of a reversed lens and providing a standard 52mm thread for filter or accessory mounting

and that's saying something

with a wide exposure latitude

This system also includes a dual cable release for autodiaphragm operation

with a sturdy-feeling metal body and a real optical viewfinder

Nikon HN-1 lens hood brand_Calypso this ring complements the BR-2The Nikon HN 1 is a round metal hood for 52mm threaded lenses. A very shallow hood, it's suitable for lenses with focal lengths of 24mm and up. While you can expect all the hoods we sell to work properly, we've grouped them into three different condition grades: Working condition hoods will have noticeable paint and finish wear, possibly including small dents which do not affect function. Good condition hoods will have minor paint and finish wear