PRODUCT

50mm F1.4 AS UMC

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Your Bright Days with Samyang 50mm

Standard Manual Focus Photo Lens

Samyang Optics 50mm F1.4 AS UMC is a standard manual focus photo lens designed for full frame image sensor.

Optical Features

Samyang 50mm F1.4 AS UMC is a manual focus lens with a low F number. You may control the lens precisely when shooting under various exposure environment including relatively dark or too bright situations.
This lens features 9 lenses in 6 groups including 1 glass aspherical lens (ASP), and 1 hybrid aspherical lens (H-ASP) to offer high resolution. Especially, H-ASP minimizes color aberration to realize exceptional image quality and high contrast for center and corner of image even when aperture is fully opened. Ultra Multi Coating (UMC) technology of Samyang Optics optimizes the light penetration and minimizes flare and ghost. With such optical construction, it has 0.45m of minimum focal length to take photos of subjects in near distance.

Hardware Features

There are 8 aperture blades designed to be almost as a full circle when aperture is closed which expresses starlike ray clearly and beautifully. The frame of the lens is compact and solid since it is made of high-strength aluminum alloy so you can create trustworthy images. Also, detachable petal-shaped lens hood minimizes flare and ghost by sheltering lens from unnecessary lights.
Available for 9 camera mounts: Canon, Canon M, Nikon, Pentax, Sony ∝, Sony E, Fujifilm X, Samsung NX, MFT.


  • Bright F1.4 Aperture

    With a bright aperture of F1.4, it maintains shutter speed in indoor and low light conditions and ensures instant response while creating an out-of-focus effect to make the subject stand out.


  • Aspherical Lens

    With minimal spherical aberration and distortion, you can take pictures with incredible precision.


  • Minimized Flare and Ghost Effects with Ultra Multi Coating

    By reducing the impact of flares and ghosting effects in your pictures while ensuring excellent image quality and contrast from the center to the periphery, it offers crystal clear, sharp image quality.


  • Beautiful Bokeh with 8 Aperture Blades

    Featuring 8 rounded blades, it adds an artistic touch to your pictures and creates a sense of soft dimension with incredible bokeh, perfect for out-of-focus portraits and night city landscapes.


  • Smooth Focus Ring

    Smooth focusing ensures precise control and produces images with incredible sharpness, making it the ideal choice for indoor and night shooting.

Technical Information
  • Specifications
    SPECIFICATIONS 1:1.4 50mm AS UMC
    APERTURE RANGE F1.4 ~ 22
    OPTICAL
    CONSTRUCTION
    9 ELEMENTS IN 6 GROUPS (1 ASPHERICAL & 1 HYBRID LENS)
    MINIMUM
    FOCUSING DISTANCE
    0.45 m (1.47ft)
    FILTER SIZE Φ77mm
    MAXMUM DIAMETER Φ81.6mm
    MOUNT CANON
    EOS
    NIKON PENTAX
    K
    SONY
    α
    CANON
    M
    FUJIFILM
    X
    SAMSUNG
    NX
    SONY
    E
    MICRO
    FOUR-
    THIRDS
    ANGLE OF VIEW 35mm 46.2˚ 46.2˚ 46.2˚ 46.2˚ - - - 46.2˚ -
    ASP-C 29.0˚ 30.8˚ 30.8˚ 30.8˚ 29.0˚ 30.8˚ 30.8˚ 30.8˚ -
    FOUR-THIRDS
    4/3”
    - - - - - - - - 23.6˚
    LENGH(mm) 74.7 72.2 73.2 74.2 100.6 101.0 93.2 100.7 99.5
    WEIGHT(g) 535 520 510 530 605 605 555 565 555
  • MTF CHART 







  • Optical Construction 

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Samyang’s Guide to Achieving the Optimal Angle of View

The perfect spacing and distance are always necessary when shooting all kinds of subjects, including people, to give them a proper relationship with the beautiful space around them. So, what’s the exact distance that helps you best appreciate a work of art, or a photo?

The correct answer is the diagonal length of the full frame of a subject.

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The best standpoint from which to appreciate the full view of a subject is the distance of the diagonal length of the subject frame. This wider angle is superior to standing closer at a 50 degree angle to get a more detailed view. This notion of an ideal distance or view point is also applicable in the world of photography.

For still images, keeping a distance equal to the diagonal length of the full image surface is recommended. The full frame sensor of a digital camera is 36 x 24mm and the diagonal length is 43.26mm so any distance close to this number is nearer to the ideal than the currently accepted industry standard of 50mm.

Back when film cameras were common, 45mm was the industry standard and this continued as reflex cameras needed extra space to fit a mirror. However, as mirrorless cameras become more popular again, there has been a need to return to this industry standard…which is the impetus for the Samyang AF 45mm F1.8 FE. With less distortion than a 35mm lens and wider angles than a 55mm lens, the Samyang AF 45mm F1.8 FE is a perfect lens for portraits, landscapes, architecture photography, and pictures of pets.