Lens Pentakon 2.8-135 M-42

Lens Pentakon 2.8-135 M-42
Product description

Pentacon auto 2.8/135 MC - great fix the body of the lens. Ideal for portraits, has a nice bokeh, color rendition and contrast. Afraid of illumination.
Pentacon auto 2.8/135 MC - old metal, manual (hand) lens. Focusing only available with the help of hands. Fit and full-frame camera and kropnutye. On the Nikon 1.5x crop it will be 202.5 mm EGF, and the crop Canon 1.6x - 216mm - get ?FR have a decent telephoto lens. I lick the lens 5 in the 4 groups.
Number of petals diafragmyvsego six. Earlier versions and other versions have 15 or 16 aperture blades, which allowed to make very smooth circles of confusion. In my copy is the same standard six-blade aperture. Some versions of MULTICOATED (MC) had eight petals. Also, the lens has a manual and automatic control diafragmoy.Esli need a lens with good bokeh at all apertures, I advise you to look at Tair-11A, which has 20 aperture blades in the same F2.8 135mm.