Kyle M.
1-Aug-2017, 14:40
Hello all. A little over a year ago I purchesed a Pre-Anniversary Speed Graphic along with this lens from a fellow LFF member who's name escapes me at the moment. I've always been curious about it but I've never got around to researching it. It is a G. Leitmeyr Sytar 210mm F=4.5 barrel lens. The markings around the front element are "G. Leitmeyr Munchen No. 3580 Doppel Anastigmat Sytar 1:4.5 F-210mm" The easy stuff I've figured out of course 210mm, F4.5, Double Anastigmat. What I don't know is this lenses origins. Who is G. Leitmeyr? Was he a manufacturer? A wholesaler who had his name on products? Or something else? It has 15 aperture blades, and markings of 4.5, 6.3, 8, 11, 16, and 23. I've shot with it a fair bit on the Speed Graphic and it is quite sharp and contrasty even wide open. I've had it apart to clean it and it seems to be 4 elements in 2 groups. I'm not sure what this design would be known as.
I also don't really know anything about lens design but I would describe it as a front element that is convex on both sides the sides not being symmetrical, the middle two elements are concave on both sides and I cannot really tell if they are symmetrical side to side but I don't believe they are. The rear element is convex on both sides and is definately not symmetrical side to side. The middle two elements are attached to threaded rings that hold the front and rear element in. Both groups are individually removable from the barrel, and can then be unscrewed to remove the front and rear elements. Has anyone ever seen one of these? Is it rare or valuable? Or is is just another off brand vintage lens?
I also don't really know anything about lens design but I would describe it as a front element that is convex on both sides the sides not being symmetrical, the middle two elements are concave on both sides and I cannot really tell if they are symmetrical side to side but I don't believe they are. The rear element is convex on both sides and is definately not symmetrical side to side. The middle two elements are attached to threaded rings that hold the front and rear element in. Both groups are individually removable from the barrel, and can then be unscrewed to remove the front and rear elements. Has anyone ever seen one of these? Is it rare or valuable? Or is is just another off brand vintage lens?