The focal length is 135 mm.
The maximum aperture is 3.5.
The minimum aperture is 22.
The number of aperture blades is 6.
The number of lenses / groups is 4/3.
The minimum focusing distance is 0.9m.
Weight - 430g.
Attachment attachments - threaded m49.
Optics mount - M42.
Ergonomics and design:
The lens has a good build quality, made entirely of metal and glass. The specimen has a very pleasant focus. The focusing ring is metal, rotates almost all 360 degrees, the minimum focusing distance is quite pleasant, and is only 1 meter. It is very pleasant to focus, when focusing, the lens trunk is lengthened by about 3 cm, while the front lens does not rotate.
The lens has a red and white color of the depth of field, aperture and focusing distance indicators. DOF is indicated for F / 8, 16, 22. The aperture ring has only fixed values, on the lens you can find the 'M \ A' aperture control mode switch. The ‘M’ aperture control mode makes it easy to use the Sonnar 3.5 / 135 Carl Zeiss Jena DDR on modern digital cameras.
Sonnar 3,5 / 135 Carl Zeiss Jena DDR has a built-in telescopic hood, which helps to avoid rabbits and drop in contrast with strong backlight sources.
Artistic features and photo examples:
The lens is sharp at all apertures, especially in the center. Aberrations are well corrected, contrast and color reproduction are good. The lens tolerates backlight well. The bokeh is very pleasant, plastic airy picture, typical of the Zonnars. The lack of distortion and long focal length make this Sonnar 3.5 / 135 Carl Zeiss Jena an excellent portrait lens. In general, the image quality is excellent.
Sonnar 3,5 / 135 Carl Zeiss Jena DDR is an excellent short tele prime lens with legendary Sonnar optical design. The lens provides excellent image quality, in particular, a pleasant background blur, which makes it a good portrait lens.