lovelyleica Posted March 9, 2010 Share #1 Posted March 9, 2010 Advertisement (gone after registration) It works well. There is anyway some restrictions to consider like picture edges and corners sharpness strong decrease due to full frame sensor optimized for short focal lengths. Züri See - Switzerland - Telyt 6.8/400mm - ISO 800 50% of original -> here Link to post Share on other sites More sharing options...
Advertisement Posted March 9, 2010 Posted March 9, 2010 Hi lovelyleica, Take a look here Leica M9 + Visoflex III + Telyt 6.8/400mm. I'm sure you'll find what you were looking for!
jaapv Posted March 9, 2010 Share #2 Posted March 9, 2010 No - it is not the sensor - it is the lens - the quality falloff of these lenses towards the corners is quite strong. You can see by the water that the lens has pronounced Curved Field Aberration. The water is sharp as the plane of focus curves towards the camera, but the trees are totally out of focus due to the same effect. Link to post Share on other sites More sharing options...
stephan_w Posted March 10, 2010 Share #3 Posted March 10, 2010 I like this image very much. It shows very nicely the quite and a bit "out of this world" atmosphere of a swiss lake in this season ........ Just a question about this Telyt: Which version is it? Is this the latest version of the 400 Telyt? As I have a Telyt 400/5 and I wouldn'expect such image quality. (I suppose that the image was made at 6.8, not with a 6.8/400?) Link to post Share on other sites More sharing options...
lovelyleica Posted March 14, 2010 Author Share #4 Posted March 14, 2010 This photo is made with TELYT 6.8/400mm latest model produced by Leica. It is a little bit better than older Telyt 5.6/400mm. I have both and so could compare. I also have the 6.8/560mm which is quite good too. Link to post Share on other sites More sharing options...
tobey bilek Posted March 14, 2010 Share #5 Posted March 14, 2010 That is a twp element cemented lens which has pronounced field curvature toward the photographer. The center is sharp, and object near the edges need to be closer to be in focus. It shows on film just as it does here. Use F16 to minimise the effect. Leica assumed most tele pics were centered subjects and the edges did not matter. Try a 125mm Hector and see how you like it. An amazing lens, but contrast is a little low at 2.5, but with digital that is fixed easily. BTW, the field curvature shows on a Nikon D700 also which is one current use for mine. Link to post Share on other sites More sharing options...
wlaidlaw Posted March 14, 2010 Share #6 Posted March 14, 2010 These are really simple lenses. Just the one group at the front of the lens. I don't know how many elements are cemented together to make the various 400/560 Telyt's. What I have not experimented with is how much improvement you get with stopping down. The 280/4.8 lens seems quite a bit better to me and it sure is a lot easier to use. Wilson Link to post Share on other sites More sharing options...
jaapv Posted March 14, 2010 Share #7 Posted March 14, 2010 Advertisement (gone after registration) It is a twolens kitted element, an Achromat. The max aperture was reduced to 6.3 to combat the curved field. Novoflex went another route. They had Leica produce the Nofexar-T 5.6/400, which used a three-lens achromat, making it a considerable better lens, but quite expensive. Scott made the glass, Leica ground and kitted the lenses, Novoflex made the mechanical parts and Agfa assembled the lens. Link to post Share on other sites More sharing options...
lovelyleica Posted March 14, 2010 Author Share #8 Posted March 14, 2010 I have the chance to own also a like new Telyt f4.8/280mm. It's a great little lens, easy to use. After having done a lot of tests I could target the best aperture for this lens to be f8 (best global resolution in center + corners). For Telyt f6.8/400mm best aperture is f8-f11 and f11 for f6.8/560mm. Telyt f4.8/280mm on Visoflex III + Leica M9 Moscow building - Leica M9 Telyt f4.8/280mm 50% Full size Moscow roofs with shooter ! - Leica M9 Telyt f4.8/280mm 50% Full size Link to post Share on other sites More sharing options...
jaapv Posted March 14, 2010 Share #9 Posted March 14, 2010 The first version is definitely not as good as later ones. Link to post Share on other sites More sharing options...
lovelyleica Posted March 14, 2010 Author Share #10 Posted March 14, 2010 ??? sorry but you mix up Telyt versions. The Telyt 280mm shown here is not first but second AND last revision of f4.8/280mm optically identical to a more recent version made of a different barrel and focusing ring . So I don't see how this could not be as good as later ones ;-) Link to post Share on other sites More sharing options...
jaapv Posted March 14, 2010 Share #11 Posted March 14, 2010 I was not talking about your lens specifically, just pointing out there were two versions optically ( there was a third one, but that was a mount change, doing away with the adapter ring) The new optical design starts at # 2340944 Link to post Share on other sites More sharing options...
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