Industar-61 L/D I-61 LD 2.8/53 M39 mount USSR lens for rangefinder FED

Industar-61L/D (Индустар-61Л/Д), lens for rangefinder camera 53 mm, f/2.8, M39 (LTM) mount, s/n 8918665 "FED" plant, Kharkiv, Ukraine, USSR Very good condition. Lens is clear and clean, without any fungus or scratches. Inside there are microspecks of microdust. Body has small signs of age. Aperture ring rotates properly, focus ring rotates not uniformly and tightly (with effort), has a backlash. Camera "Zorki-C" is not included and shown as an example of mount. This is probably the most popular lens from vast "Industar" family. I-61 is a lens with medium lens speed and multilayered anti-reflection coating. Extraheavy lanthanum crown glass "STK-6" is used. Authors of the lens - USSR academician G.Slusarev and V.Sokolova. Optical resolution of this four-lenses system is equal to six-lenses "Helios-81". This lens was made for rangefinder "FED" and SLR "Zenit" since 1971 till 1990 at three plants: KMZ (Krasnogorsk), FED (Kharkiv), LZOS (Lytkarino). For "FED-3,-4,-5" it was a default lens. "Industar-61 L/D" has 6 aperture blades; letters "L/D" mean Lanthanum/ for rangefinder. Also there was I-61 L/Z, where "Z" meant - for SLR camera. "I-61" (without letters) has either 10 or 6 aperture blades. Characteristics: Lens s/number - 8918665 Number of lenses - 4 in three groups, Tessar Angle of view - 46o Number of aperture blades - 6 Limit of aperturing - 1:2.8 (max), 1:16 (min) Resolving power - (centre/edge) 45/28 lines/mm Minimal distance of focusing - 0.42 m Type of thread - M39x1/28.8 mount Dimensions (mm): 58*59*59 Focal distance - 52,42 mm. Weight - 127 g Multilayered anti-reflection coating ---------- Conditions: Economy shipping to the address stated at Pinkoi with tracking number, usually sent within 3 business days after payment. See the photos for details. Photos are actual - that is exactly the lens you will receive. Please, do not hesitate to contact me for any information required. Please, watch my other items. I combine shipping - write to me what items do you want to buy, and I will calculate the discount for combined shipping. Package is packed thoroughly and carefully and marked as a “gift”. If you need to add invoice in the envelope or not to mark as a “gift”, write to me. If you are interested in terms of shipment - write to me, and I will tell the minimum, maximum and average time of shipment to your country (I accumulated vast statistics). Return shipping (if the item is as described in the ad) is paid by the buyer. My price include the item and shipping cost and does not include Duties, Value Added Taxes, Customs Clearance Fees and other charges. These charges are the buyer's full responsibility. Please check with your country's customs office to determine what these additional costs will be before bidding/buying. Buyer needs to pay for the above fees in case that occurred for certain goods. If the package returns back to me due to the buyer refuse to pay those fees, I would not send the package again unless the buyer completes those fees and pay all the return and resend cost. Buyer can not cancel the order or request refund due to this reason. All the customs clearance and other affairs that can be necessary to get the package in the buyer’s country is buyer’s full responsibility. Please, be sure that you are aware of your post office working time, order and rules of package delivery and be ready to accept the package. If the package returns to me as “unclaimed” or the tracking system shows “unsuccessful delivery attempts”, refund to the buyer will be paid deducting the shipping and return costs. Resending must be paid extra.