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