Thank you for your interest to our store. Here you can find a lot of interesting things for yourself. Welcome to our store. This is vintage lens made in the former Soviet Union (USSR). Tair-11A is an interesting lens with an amazing picture and a fixed focal length of 135mm. The diaphragm has 20 blades. The aperture control ring rotates smoothly, stopping at fixed values. At closed apertures, the lens produces almost even circles in an unsharp area. Focusing range from 1.2 meter to infinity. Aperture has fixed values from 2.8 to 22.0. The lens has a very specific bokeh. I recommend it for creative experiments. The lens has been professionally serviced and tested, we have done everything necessary for proper operation, cleaned, lubricated, adjusted (CLA). Optical element (glass) in excellent condition, clean and transparent. The blades of the diaphragm are clean and free of oil (this is very important for proper operation). The focus and aperture control ring rotates smoothly. There are no signs of oxidation on the body. The lens body is in very good condition, the lens body was polished and now looks like a mirror, there are no signs of oxidation, this lens will be in excellent condition for many years to come. Diaphragm: f/2.8 – f/22.0. Number of aperture blades: 20 pcs. The weight: 560 g. Front Filter Diameter: 55mm. MDF: 1.2 meter. Tair-11A can be used on many modern SLR and mirrorless cameras with an appropriate adapter. Most of the lenses in our store have been used before. The lenses may have small marks of cosmetic wear (natural traces of use), small marks from cleaning, but they are completely intact and function perfectly. See the photos, if necessary, ask us questions. All lenses are serviced and tested. We remove dust and dirt from the optical element, we remove oil from the aperture blades and change the lubricant inside the lens, after servicing, the glass becomes clean and transparent, and the rings rotate smoothly and precisely. The lens will serve you for years to come, and will grace your vintage lens collection. We try to describe your product precisely and correctly. We accept the return during 14 days. After getting your order, leave your feedback, it is important for our company. We always meet the requirements of the customer all disputable points are solved in a customers benefit. We will respond to you within 24 hours and do our best to help you out!