Yes, this is correct...... but 1/2 inch bigger is the issue. Gels thickness will not make a difference, optically. Good idea to try cutting one to fit inside the clear filter lens. Frank Filippone red735i@xxxxxxxxxxxxx -----Original Message----- From: hasselblad-bounce@xxxxxxxxxxxxx [mailto:hasselblad-bounce@xxxxxxxxxxxxx] On Behalf Of Q.G. de Bakker Sent: Monday, March 17, 2008 11:33 PM To: hasselblad@xxxxxxxxxxxxx Subject: [HUG ] Re: Distagon 30 Internal Filters.... Frank Filippone wrote: > The Zeiss screw in. The Russian just slip over. Not in my Ukranian ;-) fisheye. Screw mount too. ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.