Carlos, I have tried one, it is very big and I thought impractical because of its size. The lens is very long at 30 inches. I opted for the Ziess 500mm f5.6 lens; 12 inches long; with a 2x Tele Converter. Also I have a 750mm f7 Century Tele-Athenar lens which is very light and I found it very practical in the field taking photos of air planes flying acrobatics At the Reno air show. It was originally designed for 35m/m super slides therefore there is some vignette at the corners. Jonathan -----Original Message----- From: rollei_list-bounce@xxxxxxxxxxxxx [mailto:rollei_list-bounce@xxxxxxxxxxxxx] On Behalf Of CarlosMFreaza Sent: Wednesday, June 02, 2010 11:24 AM To: rollei_list@xxxxxxxxxxxxx Subject: [rollei_list] A long lens The item 370389546314 in eBay is pretty impressive for some reasons, price is one of them. The Tele Tessar f8/1000mm is a dream to take birds and wild animals photographs (4.5º angle of view), it weighs 8.740 kg (19.26 pounds), anyway is lighter than the Mirotar 5.6/1000 with 16.500 kg (36.37 pounds), this kind of lenses appear rarely, even in eBay. This version is for the Rolleiflex SL66, it has two big elements at the front and two smaller elements in the rear of the lens barrel. BTW it has a tripod socket and the lens mount holds the camera when the tripod is used. It would be nice to try one. Carlos --- 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 --- 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