Designed for Fujifilm X-mount mirrorless cameras, this 20mm f/1.8 ED AS UMC Lens from Rokinon is a bright wide-angle prime featuring an intuitive manual focus design and enhanced optical construction. Two aspherical elements and three extra-low dispersion elements are used to reduce both spherical and chromatic aberrations for greater sharpness, clarity, and reduced distortion. The optics also feature an Ultra Multi-Coating to guard against lens flare and ghosting for increased contrast and color neutrality when working in strong lighting conditions. The manual focus operation affords working with subjects as close as 7.9" away, and a rounded seven-blade diaphragm contributes to a pleasing bokeh quality.

X-Mount Lens/APS-C Format    30mm (35mm Equivalent)    Aperture Range: f/1.8 to f/22    Two Aspherical and Three ED Elements    Ultra Multi-Coating    Manual Focus Design    Rounded Seven-Blade Diaphragm

A wide-angle prime designed for APS-C-format Fujifilm X-mount mirrorless cameras, this 20mm f/1.8 lens provides a 30mm 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.

Related Questions and Answers

Q: 1. Is it possible to use an 82-77 mm step down filter adapter so I can use the lens with an 82 mm screw on filter?

A: A step-down filter is designed to use a smaller filter on a lens with a larger filter thread. As such, you would not use a step-down filter to connect an 82mm filter on a 77mm lens filter thread. You would instead need a 77-82mm step-up filter to connect an 82mm filter on the lens' 77mm filter thread. However, do note that if you use a step-up filter, you may not be able to use the lens hood and may need to remove the lens hood from the lens before using the larger filter setup. The Sensei 77-82mm Step-Up Ring, B&H # SESUR7782, would allow you to use an 82mm filter on the Rokinon 20mm f/1.8 ED AS UMC Lens for Nikon F.

Q: 2. Looking for a decent wide angle lens (approx 14mm; either prime or zoom) for our C100 Mark II that won't break the bank. Is this lens a good choice for that camera? If not, what other options are there? We'll be using it primarily for interiors (some shots lit, some natural light), so we probably need an f/2.8 or faster.

A: As long as you do not mind focusing manually, yes, the Rokinon 14mm f/2.8 IF ED UMC Lens For Canon EF, B&H # RO1428C, would be compatible for use on the Canon EOS C100 Mark II Cinema EOS Camera. However, if you are looking for a cine lens with built-in gears for focus and aperture pulling and with a de-clicked aperture, the Rokinon 14mm T3.1 Cine ED AS IF UMC Lens for Canon EF Mount, B&H # RO1431TC, would instead be a better option for your usage needs, and is in a similar price bracket.

Q: 3. How's this with astrophotography, in comparison to the 24mm/1.4? (A7R2)

A: I've used both, maybe I could never get a good copy of 24mm, but 20mm f/1.8 worked pretty good for me for astrophotography. It was way sharper than 24mm and f/1.8 is more than enough to capture mily way or stars even at not so high ISO values.

Q: 4. Is this lens compatible with a Nikon D5200?

A: This lens is compatible with the D5200 and there will be a crop factor of 1.5X applied to its focal length.

Q: 5. Is this lens weather-sealed?

A: No, the Rokinon 20mm f/1.8 ED AS UMC Lens for Nikon F is not weather sealed.

Q: 6. Can I use this lens in aperture priority mode on my camera? Will in camera light meter work automatically and set proper SS?

A: Canon DSLR camera's built-in light meter will set the correct shutter speed in aperture priority mode with the attached Rokinon 20mm f/1.8 ED AS UMC Lens for Canon EF.

Q: 7. need a good lens recommendations for creating 3d pano tours for Sony A7rIII?

A: At 14mm this is about as wide as you will get for a Full Frame camera like the Sony A7RIII. This should work very well for your needs.

Q: 8. Does anyone have a Lightroom lens profile for this lens on Sony FE mount?

A: I went on Adobe's site and they did not list a profile as of yet, i would give it a week or so, to see if they update the site.

Q: 9. Is it compatible with Canon t3i?

A: Yes.

Q: 10. Does this lens work with a sony alpha A100?

A: It will work on any Sony or Minolta camera with the Alpha mount, which includes the A100.