Hello Jostein, I have purchased an 82mm adapter ring for Cokin P System (Cokin brand) for a friend. I think you have to measure the inner diameter of the holder itself as many filters are retangular and just slide into the holder.
-- Best regards, Bruce Wednesday, January 7, 2004, 8:51:29 AM, you wrote: J> The Cokin P system has a limit at 75mm. The largest adaptor ring is 77mm, J> but if you measure the inner diameter of the pola filter or the B/Y pola, J> it's 75. J> The widest lens I have for 35mm is the FA 20mm, which works fine (67mm front J> cap). J> Cheers, J> Jostein J> ----------------------------- J> Pictures at: http://oksne.net J> ----------------------------- J> ----- Original Message ----- J> From: "Ryan Lee" <[EMAIL PROTECTED]> J> To: "PDML" <[EMAIL PROTECTED]> J> Sent: Wednesday, January 07, 2004 2:25 AM J> Subject: OT: Cokin P & Ultrawide >> Hi all, I'm sorry this one's another OT; I was hoping I could draw on the >> sea of experience on this list. Has anyone used a Cokin P system on a >> ultrawide zoom (17-35 or 19-35), and if so I was wondering if I could get >> some advice and tackling the vignetting problem. I've read some comments >> elsewhere about trimming down excess filter slots- has anyone here done J> this >> before? >> >> Also, I'm curious as to whether it's possible to use a (screw on) SinghRay >> thinline gold/blue polariser together with an nd grad on a Cokin P, since J> I >> understand the thin g/b doesn't have an outer thread? I haven't used the >> Cokin P holder before, and I apologise in advance if all this sounds J> overly >> silly. >> >> Thanks, >> Ryan >> >> >> >>

