........the world is still revolving then. ;-) Thanks Ed. Because the filter is part of the optical train, is the filter thickness critical or is it just the number of glass/air interfaces? I can machine a filter holder to insert the glass as opposed to destroying a rare Carl Zeiss filter if thickness is not an issue. John From: rollei_list-bounce@xxxxxxxxxxxxx [mailto:rollei_list-bounce@xxxxxxxxxxxxx] On Behalf Of aghalide@xxxxxxx Sent: 06 December 2007 18:46 To: rollei_list@xxxxxxxxxxxxx; rollei_list@xxxxxxxxxxxxx Cc: John Wild Subject: [rollei_list] Re: Very Quiet! & Fisheye Filters If what you want is a user, then destroy the B11 and put your own orange in it. Ed -------------- Original message from "John Wild" <JWild@xxxxxxxxxxxxxxxxxxxxxx>: -------------- > Is everybody out doing their Christmas shopping or has my email gone > 'toes-up'? > > To start the ball rolling again...... > > Having recently acquired a f3.5 30mm F-Distagon (Marc, I have not > forgotten about more Zeiss numbers!) I have been looking for a set of > internal filters (26mm but with a internal, female thread, so ordinary > ones will not fit). I contacted Zeiss who say there are no more spares > but try Rollei and Hasselblad. I have since managed to get a B11 > (daylight conversion) and Yellow through Hasselblad but no luck with the > Orange. If anybody has or knows of a spare orange, I would be > interested. > > The reason for this thread is that Hasselblad fil ters f it the Rollei > Fisheye too. So if you are looking for some and see any at a fair or > auction, hopefully you will be able to identify them. They are black and > marked with 'Carl Zeiss Germany' on the peripheral edge together with > the type of filter. > > John > --- > Rollei List > > - Post to rollei_list@xxxxxxxxxxxxx > > - Subscribe at rollei_list-request@xxxxxxxxxxxxx with 'subscribe' > in the subject field OR by logging into www.freelists.org > > - Unsubscribe at rollei_list-request@xxxxxxxxxxxxx with > 'unsubscribe' in the subject field OR by logging into www.freelists.org > > - Online, searchable archives are available at > //www.freelists.org/archives/rollei_list >