Leitz 800mm f6.3 Telyt-S in dedicated case by s4sargent, on Flickr
This is not the lens which was on Ebay recently - that one was far too expensive; this one was sourced in the UK. I have only seen one other listed by a UK dealer approx 15 years ago. I plan to transport this and a couple of tripods to a 500 acre local country park in a bike cart - where I can ride the bike pulling the cart behind me.
Total weight when in the dedicated case is 13.2 Kilos ; case is 5 kilos thus lens weighs 8.2 Kilos; total length is just over 1 meter c/w lens hood attached. Add the camera plus tripods to that and it would not be feasible or practical to carry the outfit - but the bike cart with a layer of foam in the bottom should cope OK (with the lens in the dedicated case)
Leitz 800mm f6.3 Telyt-S and Leitz 560mm f6.8 Telyt-R by s4sargent, on Flickr
To compare the 800m f6.3 and and 560mm f6.8 Telyt lenses .
Leitz 800mm f6.3 Telyt-S rear section with Series VII filter hinged carrier/slot by s4sargent, on Flickr
The rear filter is very practical - the lens' front element is 104mm / 5.5 inches diameter.
Looking forward to using the lens soon with a DMR - effective focal length will be 1096mm; will also be tried with a 1.4x and 2x convertors to see if feasible to obtain sharp images using two tripods and a Manfrotto 393 heavy lens support. However, that might be 'pushing it a bit' ref the DMR's not so high usable ISO thresholds at this time of year. I have previously used a Manfrotto 359-1 long lens' camera support to stabilise the camera and 560mm lens but found it awkward; thus plan to use two tripods ie a separate tripod for the camera. I have an Arca 'Cube Head' which will take the weight and also enable very fine adjustment of the lens for accurate framing.
Most collectors are probably aware of the lens' attributes and the special glass formulated to make the lens possible. TELYT