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Q&A

Questions & Answers

Mark M : Is this a manual aperture on a a7iii?
JON B : Does anyone have a lens profile for sony fe mount?
Christian H : Does the lens really weigh 1.16 lbs?ANDREW R : That's what the manufacturer specifies.

Reviews about this item

Review Summary

2020-06-25T09:00:37

Rated 4 out of 5

Excellent Astro Lens

Needs a little cleanup for chromatic aberration, more for vignette. Overall, excellent, even at f/1.8.

Wayne A.

2020-02-13T08:10:44

Rated 5 out of 5

clean prime

I can't tell you how often I use this lens, great for landscape/astro.

Christopher C.

2019-06-05T21:49:27

Rated 5 out of 5

Good lens so far

Only used it a few times but seems quite sharp for a cheaper lens. Should work well for landscape astrophotography which is the main purpose I bought it for.

Michael B.

2019-01-30T08:08:37

Rated 4 out of 5

Great Manual Focus Lens

This lens has good image quality and seems well built. It feels slightly large on a mirrorless camera and could be a little wider; but for the price, it's great.

KELWIN M.

2018-08-30T17:42:59

Rated 5 out of 5

Love it

LOVE LOVE LOVE this lens. It’s sharp and takes some amazing shots when paired with the Sony A7III

KYLE P.

2017-06-23T04:45:47

Rated 5 out of 5

Amazing bargain

The price/performance ratio of this lens is impressive; extremely sharp, very low distortion, and chromatic aberrations are well-controlled (what there is can easily be removed with software). I don't consider the fact that it's not AF to be a disadvantage. This isn't the focal length I would use when aiming for blurrred backgrounds, but the bokeh looked pretty good in the couple of test shots I took.

Simon R.

2017-06-20T11:08:27

Rated 5 out of 5

Very good lens

I had been looking for a wide angle prime lens for some time and finally got this lens when it went on sale. I am very satisfied with it. Good wide open and gets better as you stop it down a bit. As a long time SLR and now DSLR user manual focus is not an issue for me. Contrast is a bit low but easily fixed in post processing. All in all a very good lens for the money. i have attached a few photos I took at a local park when I first got the lens.

GEORGE W.

2017-06-06T13:58:48

Rated 5 out of 5

Great lens for gimbal use

I bought this lens for video. Specifically I was looking for a fast, lightweight, wide-angle that I could mount on an A7SII and fly it on a one-hand gimbal (Zhiyun Crane) in combination with an A7SII... this lens meets all the requirements. It has a long, very smooth focus throw which is perfect for manual focusing (especially when shooting wide open on a full frame sensor). Used in combination with Sony's clear image zoom this lens functions as 20-40mm, an excellent focal range for the type of run-and-gun video shooting that I do.

Mark L.

2017-05-24T11:36:18

Rated 4 out of 5

Worth The Money

So far, the Rokinon 20mm lens has proved to be a good performer on my full frame DSLR. It's slightly soft wide open, but it sharpens up quickly and displays no bad behavior. It is surprisingly good optically for being such a fast piece of glass. While manual focus can slow down the task of photography, the camera's focus confirmation light works well. The only knock on the lens is that the 77mm filter size does vignette slightly unless a thin filter is used.

JEFFREY C.

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Rokinon 20mm f/1.8 Specifications

General

General

Jump to...
  • Brand

    Rokinon

  • Lens Series

    None

  • Color

    Black

  • Lens Type

    Wide Angle

  • Lens Mount

    Sony E (Full Frame)

  • Format Compatibility

    35mm Film / Full-Frame Digital Sensor

  • Focus Type

    Manual Focus

  • Closest Focus Distance

    7.87" / 20 cm

  • Focal Length

    20mm

  • Angle Of View

    94.8

  • 35mm Equivalent Focal Length

    Not Applicable

  • Maximum Aperture

    f/1.8

  • Minimum Aperture

    f/22

  • Maximum Magnification

    #N/A

  • Filter Size

    77mm

Construction

Jump to...
  • Lens Elements / Groups

    13 Elements / 12 Groups

  • Diaphragm Blades

    7, Rounded

  • Dimensions Diameter x Length

    3.27 x 4.50" (83.0 x 114.4 mm)

  • Weight

    1.16 lb / 525 g

Features

Jump to...
  • Image Stabilization

    None

  • UPC Code

    084438765328

13 Accessories for Rokinon 20mm f/1.8 ED AS Lens for Sony E

  • All Accessories (13)
  • Filters (1)
  • Filter and Filter Kits (1)
  • Bags & Cases (2)
  • Polarizing Filters (1)
  • Cleaning Accessories (3)
  • Covers & Caps (1)
  • Lens Caps (2)
  • Lens Accessories (1)
  • Cap Leash (1)

About Rokinon 20mm f/1.8

FEATURED REVIEWS

Very good lens

By GEORGE W.

I had been looking for a wide angle prime lens for some time and finally got this lens when it went on sale. I am very satisfied with it. Good wide open and gets better as you stop it down a bit. As a long time SLR and now DSLR user manual focus is not an issue for me. Contrast is a bit low but easily fixed in post processing. All in all a very good lens for the money. i have attached a few photos I took at a local park when I first got the lens.

Amazing bargain

By Simon R.

The price/performance ratio of this lens is impressive; extremely sharp, very low distortion, and chromatic aberrations are well-controlled (what there is can easily be removed with software). I don't consider the fact that it's not AF to be a disadvantage. This isn't the focal length I would use when aiming for blurrred backgrounds, but the bokeh looked pretty good in the couple of test shots I took.

Rokinon 20mm F1.8 ED AS UMC is a wide angle manual focus lenses for DSLR cameras with full frame sensor size. The flow of light is devised based on the uniqueness of the distance from glass to sensor in mirrorless cameras to create optimal performance.

• Bright F1.8 aperture
• Ultra Wide Angle in 94.8deg.
• Aspherical Lens
• Ultra Multi Coating (UMC) of Rokinon Optics
• Circular aperture with 7 blades
• Smooth Focus Ring

The bright F1.8 aperture secures a fast shutter speed even under the restricted lighting conditions to offer best quality images. It will brighten up your everyday snapshots. Also it creates an outstanding out-of-focus look by highlighting the main object effectively. In between ultra-wide 16mm and wide-standard 24mm, 20mm lens is a perfect fit to explore wide angles not only for shooting indoor images such as concerts and interior photos but also street snaps. The 0.2m of minimum focusing adds versatility to the lens.

Based on Rokinon Optics' exceptional optical technology, Ultra Multi Coating and two aspherical lenses and three extra-low dispersion have been included among 13 glasses in 12 groups to minimize aberration and unnecessary light dispersion, delivering high resolution from the center to the corners of the image. Rokinon 20mm F1.8 is compatible with 10 camera mounts: Canon EOS, Nikon AE, Pentax K, Sony alpha, Canon M, Fujifilm X, Samsung NX, Sony E, FT, MFT.

Rokinon 20mm f/1.8 Features

  • A wide-angle prime designed for full-frame DSLR cameras, this 20mm f/1.8 lens can also be used on APS-C models where it will provide a 32mm equivalent focal length.
  • Bright f/1.8 maximum aperture benefits working in low-light conditions and also affords greater control over depth of field for selective focus control.
  • Two aspherical elements are used to reduce spherical aberrations for increased sharpness and minimized distortion.
  • Three extra-low dispersion elements help to control chromatic aberrations and color fringing for improved clarity and color fidelity.
  • An Ultra Multi-Coating has been applied to individual elements in order to reduce flare and ghosting for increased contrast and a neutral color balance.
  • Manual focus operation allows for precise control with a minimum focusing distance of 7.9".
  • Rounded seven-blade diaphragm contributes to a smooth and pleasing bokeh quality.

Key Features

  • 20mm f/1.8 lens
  • Bright f/1.8 maximum aperture
  • Two aspherical elements
  • Three extra-low dispersion elements
  • Ultra Multi-Coating
  • Manual focus operation

What's in the box:

  • Rokinon 20mm f/1.8 ED AS UMC Wide Angle Lens
  • Front and Rear Lens Caps
  • Rokinon 1 Year Limited Warranty