Vintage Lenses
    M42Pentax K
    Wide angle zoom
    Full frame

    Sirius 18-28mm f/4-4.5 MC Auto

    4.0
    (1 reviews)
    Optical: 4.0
    Mechanical: 4.0
    Value: 1.0
    Focal Length
    18-28mm
    Aperture
    f/4-4.5 (min f/22)
    Mount
    M42, Pentax K
    Weight
    488g
    Sirius 18-28mm f/4-4.5 MC Auto is a manual focus wide angle zoom 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.

    Physical characteristics

    With a lens filter diameter of 72 mm you are one step from the next standard filter size, buy step-up ring and bigger filter but you can chose from plenty options. 84 mm long, requires consideration if you want to carry in the camera bag. Weights 488 grams so plan ahead, carry only if really necessary.

    Sirius 18-28mm f/4-4.5 MC Auto purchase history

    eBay Price HistoryeBay Auction (high-low)

    Purchases (1)

    • May 30, 2024$6.00

    What is the Sirius 18-28mm f/4-4.5 MC Auto?

    Sirius 18-28mm f/4-4.5 MC Auto is a camera lens with 18-28mm focal length, a maximum aperture of f/4.0 - 4.5/22, for the M42, Pentax K mount, supporting the Full frame format, weighing 488g.

    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 Length18-28mm
    Aperturef/4-4.5 (min f/22)
    Min Focus Distance0.5m
    FocusingManual Focus
    Physical
    Weight488g
    Length84mm
    Filter Thread72mm
    MountM42, Pentax K
    FormatFull frame

    Similar Lenses

    Carl Zeiss Distagon T 21mm f/2.8 Z
    Carl Zeiss Distagon T 21mm f/2.8 Z
    4.2/5
    Similar rating (3.8)
    Chinon 21mm f/3.5
    Chinon 21mm f/3.5
    ~$2,800
    4.5/5
    More expensive ($2347)
    Cosina AF 19-35mm f/3.5-4.5 MC
    Cosina AF 19-35mm f/3.5-4.5 MC
    ~$41
    4.2/5
    More expensive ($54) and better rating (4.02)
    Quantaray AF 19-35mm f/3.5-4.5
    Quantaray AF 19-35mm f/3.5-4.5
    ~$53
    4.4/5
    More expensive ($52)
    Ricoh Rikenon 21mm f/3.8
    Ricoh Rikenon 21mm f/3.8
    4.2/5
    More expensive ($85)
    Samyang 18-28mm f/4-4.5 MC Auto Zoom
    Samyang 18-28mm f/4-4.5 MC Auto Zoom
    ~$72
    4.2/5
    More expensive ($87) and better rating (4.23)
    Sigma 21-35mm f/3.5-4.2
    Sigma 21-35mm f/3.5-4.2
    ~$106
    4.3/5
    More expensive ($61) and better rating (4.28)
    Sigma AF 17-35mm f/2.8-4 EX Aspherical
    Sigma AF 17-35mm f/2.8-4 EX Aspherical
    ~$132
    4.3/5
    More expensive ($96) and better rating (4.15)
    Sigma AF 18-35mm f/3.5-4.5 Aspherical
    Sigma AF 18-35mm f/3.5-4.5 Aspherical
    ~$118
    4.3/5
    More expensive ($62) and better rating (5)
    Sigma DG 15-30mm f/3.5-4.5 EX Aspherical
    Sigma DG 15-30mm f/3.5-4.5 EX Aspherical
    ~$135
    4.2/5
    More expensive ($112) and better rating (4.55)
    Sigma DG 17-35mm f/2.8-4 EX HSM
    Sigma DG 17-35mm f/2.8-4 EX HSM
    ~$150
    4.3/5
    More expensive ($121) and better rating (4.6)
    Super-Lentar 21mm f/3.8 Auto
    Super-Lentar 21mm f/3.8 Auto
    ~$98
    4.3/5
    More expensive ($266) and better rating (4.2)
    Tamron SP AF 17-35mm f/2.8-4 Di LD Aspherical (IF) A05
    Tamron SP AF 17-35mm f/2.8-4 Di LD Aspherical (IF) A05
    ~$148
    4.7/5
    More expensive ($133) and better rating (4.87)
    Tokina AF 193 19-35mm f/3.5-4.5
    Tokina AF 193 19-35mm f/3.5-4.5
    ~$84
    4.3/5
    More expensive ($66) and similar rating (3.99)
    Tokina AF 20-35mm f/3.5-4.5
    Tokina AF 20-35mm f/3.5-4.5
    ~$89
    4.4/5
    More expensive ($85) and better rating (4.1)
    Tokina AT-X 235 AF PRO 20-35mm f/2.8
    Tokina AT-X 235 AF PRO 20-35mm f/2.8
    ~$120
    4.4/5
    More expensive ($118) and better rating (4.16)
    Voigtlander AF 19-35mm f/3.5-4.5 Ultragon VMV
    Voigtlander AF 19-35mm f/3.5-4.5 Ultragon VMV
    4.4/5
    Better rating (4.16)

    Reviews

    Souta Okada4.0/5

    Reviewer did not give any comments for Sirius 18-28mm f/4-4.5 MC Auto

    Frequently Asked Questions

    What is the Sirius 18-28mm f/4-4.5 MC Auto?

    Sirius 18-28mm f/4-4.5 MC Auto is a camera lens with 18-28mm focal length, a maximum aperture of f/4.0 - 4.5/22, for the M42, Pentax K mount, supporting the Full frame format, weighing 488g.

    What mount is the Sirius 18-28mm f/4-4.5 MC Auto compatible with?

    Sirius 18-28mm f/4-4.5 MC Auto uses a M42, Pentax K mount and supports the Full frame format.

    How much does the Sirius 18-28mm f/4-4.5 MC Auto cost?

    Based on recent eBay sold listings the Sirius 18-28mm f/4-4.5 MC Auto typically sells for around $6.00. Actual prices vary with condition and seller.

    Is the Sirius 18-28mm f/4-4.5 MC Auto a good lens?

    Sirius 18-28mm f/4-4.5 MC Auto has a community rating of 4.0/5 from 1 review(s).

    Which lenses are similar to the Sirius 18-28mm f/4-4.5 MC Auto?

    Similar lenses include Carl Zeiss Distagon T 21mm f/2.8 Z, Chinon 21mm f/3.5, Cosina AF 19-35mm f/3.5-4.5 MC.

    Current Pricing

    Latest Price
    Price on request
    Find on eBay

    Review Summary

    Overall Rating
    4.0
    Optical4.0/5
    Mechanical4.0/5
    Value1.0/5
    Bokeh1.0/5
    Usability4.0/5
    Based on 1 reviewer