Industar 50U-1 50Y-1 red P Soviet enlarger lens 3.5/50 LZOS M39 mount

Industar 50U-1 red P lens for enlarger, #5911 50 mm, 1:3.5, M39 mount Lytkarinsky Plant of Optical Glass (LZOS), Lytkarino, USSR Good condition. Lens is clear, does not have any scratches or fungus. Front and rear glasses have a bit dust dirt at the edges. Inside there are microspecks of microdust. Body has very small signs of age. Aperture ring has a small backlash and rotates properly. One aperture blade is absent. This is a lens for enlargers for frame size 24x36mm. Difference from previous "Industar-22u" - more precise registration of photo and visual layers. This lens was produced at three plants: LZOS (Lytkarino), KOMZ (Kazan), NPO Optika (Moscow) since 1954. I-50u-1 has much more resolving power that usual I-50u (60/20 lines/mm vs 45/20 lines/mm). Note that lens is for enlarger so it does not have focusing ring. Focusing is achieved with moving of the enlarger body. If you want to use it on camera you need macro rings or extension bellows. Thanks to its resolving power and sharpness it is now often used as macrolens. This lens is very-very small and lightweight. You can easily put in your pocket. Lens has one-layered antireflection coating. Its price in USSR was only 4 Soviet Roubles (with average salary about 120 Soviet Roubles per month), so it was very easy. Characteristics: Lens s/number - 5911 Number of lenses - 4 in three groups, Tessar. Angle of view - 38o Number of aperture blades - 8 Limit of aperturing - 1:3.5 (max), 1:16 (min) Resolving power - (centre/edge) 60/20 lines/mm Minimal distance of focusing - 0,3 m Type of thread - M39 Type of thread for the nozzles - cannot be mounted Dimensions (mm): 42*43*43 Focal distance - 53,4 mm Mass - 72 g One-layered 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.