Check the listing for details. Trioplan modified for Helios 44M-4 Soviet lens + Adapter for Sony E Nex Vintage. Condition: Used. Listed at 125.00 USD. Petzvale Modified for HELIOS 44M-4 Soviet lens + Adapter for Sony E Nex Vintage The lens produces bokeh similar to Trioplan with a fully open aperture and maximum defocusing of the background with the obligatory backlight. Example: the distance to the subject (portrait) is 1.5 m, the distance to the background (flowers) is 3.5 m. The background (flowers) is illuminated by lanterns. . Aperture f=2.As a result, there is a portrait in the center of the frame, and bokeh in the form of soap bubbles at the edges of the frame. Minor digital processing is required to enhance sharpnessThe lens is designed to work on SLR cameras with a flange length of at least 55mm, and on mirrorless cameras with an extension adapter that increases the flange distance to 55mm. DESCRIPTION: Lens mount: M42Focal length: 58 mmRelative aperture: 1:2Aperture ratio: Frome 2 is 16Focus rank: Frome 0.5m 20m - infinity How to use with modern cameras? Lenses with an M42 mounting thread (M42 X 1/45.5), such as the lens from this review, are very easy to use on almost any modern digital camera (both SLR and mirrorless), for this it is enough to choose the right adapter (adapter). The cheapest adapters can be found on aliexpress.com. Adapters (adapters) with a chip provide more convenience during shooting, usually chips are used to confirm focus and / or exposure metering. The serial number in the photo may differ!!! ConditionThe lens is in Excellent condition, the mechanical systems work smoothly, the glass is clean, without dust, chips and fungus. Delivery: After receiving payment we ship within 3 business days! Feedback: Customer satisfaction is my goal. For any reason you are not satisfied with your purchase, let us know and we will do our best to resolve this issue. I appreciate your positive feedback and will do the same in return. Do not leave negative feedback without first communicating with me. Please wait no more than 2 business days. Thank you for visiting our store! Enjoy your shopping