Vintage Lenses
    M42
    Prime
    Full frame

    Cosinon 55mm f/2.1 Auto

    4.1
    (2 reviews)
    Optical: 4.0
    Mechanical: 3.9
    Value: 9.0
    Focal Length
    55mm
    Aperture
    f/2.2-16
    Mount
    M42
    Weight
    156g
    Cosinon 55mm f/2.1 Auto is a manual focus prime lens for full frame cameras.

    Optical design

    Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle. Bright lens thanks to the high aperture value

    Physical characteristics

    Weights 156 grams so convinient to carry. With a lens filter diameter of 49 mm commonly filter size, offers a wide range of filter options. 36 mm long, this small lens should be always in the camera bag.

    Cosinon 55mm f/2.1 Auto purchase history

    eBay Price HistoryeBay Auction (high-low)

    Purchases (30)

    • Aug 16, 2025$111.00
    • Jul 29, 2025$139.00
    • Jul 2, 2025$141.00
    • May 21, 2025$83.00
    • May 21, 2025$84.00
    • May 21, 2025$85.00
    • May 21, 2025$87.00
    • Apr 28, 2025$336.00
    • Apr 28, 2025$329.00
    • Apr 28, 2025$318.00
    • Apr 28, 2025$321.00
    • Apr 5, 2025$129.00
    • Apr 5, 2025$131.00
    • Apr 5, 2025$124.00
    • Jan 31, 2025$47.00
    • Jan 15, 2025$24.00
    • Jan 15, 2025$23.00
    • Jan 8, 2025$86.00
    • Jan 8, 2025$91.00
    • Jan 8, 2025$94.00
    • Dec 31, 2024$16.00
    • Dec 31, 2024$17.00
    • Dec 14, 2024$144.00
    • Dec 14, 2024$145.00
    • Dec 14, 2024$150.00
    • Dec 9, 2024$53.00
    • Dec 9, 2024$54.00
    • Dec 9, 2024$55.00
    • Oct 9, 2024$13.00
    • Oct 9, 2024$14.00

    Auctions (50)

    • Aug 15, 2026High: $30.00 / Low: $30.00
    • Jun 18, 2026High: $53.00 / Low: $47.00
    • May 22, 2026High: $53.00 / Low: $51.00
    • May 15, 2026High: $51.00 / Low: $51.00
    • Apr 20, 2026High: $53.00 / Low: $51.00
    • Mar 21, 2026High: $51.00 / Low: $51.00
    • Feb 19, 2026High: $51.00 / Low: $51.00
    • Jan 19, 2026High: $51.00 / Low: $51.00
    • Oct 15, 2025High: $52.00 / Low: $52.00
    • Aug 17, 2025High: $149.99 / Low: $54.00
    • Jul 20, 2025High: $340.00 / Low: $31.98
    • Jun 28, 2025High: $340.00 / Low: $90.00
    • Jun 4, 2025High: $340.00 / Low: $90.00
    • May 12, 2025High: $340.00 / Low: $133.00
    • Apr 19, 2025High: $133.00 / Low: $31.99
    • Mar 24, 2025High: $85.00 / Low: $15.50
    • Mar 2, 2025High: $135.00 / Low: $15.50
    • Feb 7, 2025High: $135.00 / Low: $15.50
    • Jan 13, 2025High: $135.00 / Low: $15.50
    • Dec 31, 2024High: $12.58 / Low: $12.58
    • Dec 20, 2024High: $31.99 / Low: $12.50
    • Dec 11, 2024High: $12.77 / Low: $12.77
    • Dec 6, 2024High: $12.76 / Low: $12.76
    • Nov 9, 2024High: $12.92 / Low: $12.92
    • Nov 2, 2024High: $12.92 / Low: $12.92
    • Oct 26, 2024High: $12.96 / Low: $12.96
    • Oct 19, 2024High: $13.04 / Low: $13.04
    • Oct 12, 2024High: $13.07 / Low: $13.07
    • Oct 5, 2024High: $13.11 / Low: $13.11
    • Aug 31, 2024High: $26.29 / Low: $26.29
    • Aug 5, 2024High: $32.02 / Low: $32.02
    • Sep 12, 2022High: $14.95 / Low: $14.95
    • Sep 5, 2022High: $14.95 / Low: $14.95
    • Aug 29, 2022High: $14.95 / Low: $14.95
    • Aug 22, 2022High: $14.95 / Low: $14.95
    • Aug 15, 2022High: $14.95 / Low: $14.95
    • Aug 8, 2022High: $14.95 / Low: $14.95
    • Aug 1, 2022High: $14.95 / Low: $14.95
    • Jul 25, 2022High: $14.95 / Low: $14.95
    • Jul 18, 2022High: $14.95 / Low: $14.95
    • Jul 11, 2022High: $14.95 / Low: $14.95
    • Jul 4, 2022High: $14.95 / Low: $14.95
    • Jun 27, 2022High: $14.95 / Low: $14.95
    • Jun 20, 2022High: $14.95 / Low: $14.95
    • Jun 13, 2022High: $14.95 / Low: $14.95
    • Jul 5, 2021High: $395.78 / Low: $395.78
    • Jun 28, 2021High: $395.78 / Low: $395.78
    • Jun 21, 2021High: $395.78 / Low: $395.78
    • Jun 14, 2021High: $395.78 / Low: $395.78
    • Jun 7, 2021High: $395.78 / Low: $395.78

    What is the Cosinon 55mm f/2.1 Auto?

    Cosinon 55mm f/2.1 Auto is a camera lens with 55mm focal length, a maximum aperture of f/2.2/16, for the M42 mount, supporting the Full frame format, weighing 156g.

    Prices and availability are sourced from eBay sold listings and live auctions at request time.

    eBay Auctions

    No active auctions found.

    Technical Specifications

    Optical
    Focal Length55mm
    Aperturef/2.2-16
    Min Focus Distance0.6m
    FocusingManual Focus
    Physical
    Weight156g
    Length36mm
    Filter Thread49mm
    MountM42
    FormatFull frame

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    Reviews

    Anna Braun4.0/5

    Reviewer did not give any comments for Cosinon 55mm f/2.1 Auto

    Anna Braun4.5/5

    Reviewer did not give any comments for Cosinon 55mm f/2.1 Auto

    Frequently Asked Questions

    What is the Cosinon 55mm f/2.1 Auto?

    Cosinon 55mm f/2.1 Auto is a camera lens with 55mm focal length, a maximum aperture of f/2.2/16, for the M42 mount, supporting the Full frame format, weighing 156g.

    What mount is the Cosinon 55mm f/2.1 Auto compatible with?

    Cosinon 55mm f/2.1 Auto uses a M42 mount and supports the Full frame format.

    How much does the Cosinon 55mm f/2.1 Auto cost?

    Based on recent eBay sold listings the Cosinon 55mm f/2.1 Auto typically sells for around $12.50. Actual prices vary with condition and seller.

    Is the Cosinon 55mm f/2.1 Auto a good lens?

    Cosinon 55mm f/2.1 Auto has a community rating of 4.1/5 from 2 review(s).

    Which lenses are similar to the Cosinon 55mm f/2.1 Auto?

    Similar lenses include Carl Zeiss Ultron 50mm f/1.8 (Icarex 35), Isco-Gottingen Edixa ISCO-MAT 50mm f/1.9, Kern Macro-Switar 50mm f/1.9.

    Current Pricing

    Latest Price
    €30.00
    Find on eBay

    Review Summary

    Overall Rating
    4.0
    Optical4.0/5
    Mechanical3.9/5
    Value9.0/5
    Bokeh9.0/5
    Usability3.9/5
    Based on 9 reviewers