Jupiter 8 and Lens Hood

[webb3201]

Hey all,
I just received a lens hood for my Jupiter 8 (kiev), a nice model I bought from Fedka:
http://www.fedka.com/catalog/product_info.php?cPath=40&products_id=333

My question is can I mount this hood in such a way to keep it from rotating? I thought that the inner ring was stationary, but it seems to spin. Any thoughts?

 

[matu]

The same thing happens to me, that wouldn't bothered if it were rounded.
On my Zorki I have no problem since the inner ring is stationary.

Pablo

 

[webb3201]

durn, I will move this cool one to my Zorki and use a round one on my flagship Kiev.