O'Box Question

[Arnold F.]

Is this the part that accommodates a 138mm circular filter? I don't have my mattebox with me and am not sure (and want to order a polarizer for it).

EDIT: Link -http://www.bhphotovideo.com/c/search?Ntt=oconnor+bellows+ring&N=0&InitialSearch=yes&sts=ma&Top+Nav-Search=

 

[Jake Wilganowski]

Can't see the link but its this:
http://www.abelcine.com/store/OConnor-150mm-to-114mm-Bellows-Ring-for-OBox/

 

[Arnold F.]

Is it such that I can easily rotate a linear polarizer when it's in there?

 

[Jake Wilganowski]

Yep. Buy it, it's great

 

[rod bradley]

Yep, as Jake said. Use it all the time, very easy and solid. Also accommodates other standard step-downs. An essential Obox accessory.