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Rokinon 18mm f/2.8 Autofocus Lens

The Rokinon 18mm f/2.8 is a 18mm f/2.8 lens designed for Sony E mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Rokinon 18mm f/2.8 Autofocus Lens

Rokinon 18mm f/2.8 Autofocus Lens

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Lens Overview — Rokinon 18mm f/2.8

The Rokinon 18mm f/2.8 is a wide-angle prime lens built for Sony E-mount mirrorless cameras, covering a full-frame image circle. With a maximum aperture of f/2.8 and a minimum aperture of f/22, it offers a solid range of exposure control for a variety of shooting situations. The lens weighs just 145g, making it one of the more compact options for full-frame Sony shooters who want a wide-angle prime without adding significant bulk to their kit.

Autofocus is supported alongside manual focus, giving shooters flexibility depending on the scenario. The optical construction consists of 9 elements in 8 groups, incorporating 3 aspherical elements, 3 extra-low dispersion elements, and 2 high refractive elements — a notably complex arrangement for a lens at this size and price point. Ultra Multi-Coating is applied to the optical elements to help manage flare and ghosting.

A 58mm filter thread makes it compatible with a wide range of commonly available filters. The minimum focusing distance is 9.8 inches, allowing for reasonably close subject work. No image stabilization is present in this lens.

Key Features — Rokinon 18mm f/2.8

18mm Full-Frame Prime: Covers a full-frame image circle at 18mm, delivering a wide field of view on Sony E-mount mirrorless cameras.

f/2.8 Maximum Aperture: Allows for solid light-gathering capability and background separation in a compact wide-angle package.

Native Sony E-Mount AF: Native Sony E-mount autofocus lets you shoot with full AF functionality alongside manual focus control when needed.

145g Compact Build: One of the lightest full-frame wide-angle primes for Sony E-mount, making it easy to carry on extended shoots or while traveling.

Complex Optical Construction: 9 elements in 8 groups include 3 aspherical, 3 extra-low dispersion, and 2 high refractive elements — an unusually sophisticated design for a lens of this size and price.

Ultra Multi-Coating: Applied to optical elements to suppress flare and ghosting, particularly useful when shooting into or near strong light sources.

Lens Specifications — Rokinon 18mm f/2.8

Rokinon 18mm f/2.8 full specifications
SpecDetail
Use CasesTravel, Astrophotography
Lens TypeUltra Wide-Angle
FormatFull Frame
Zoom/PrimePrime
Focal Length18mm
Maximum Aperturef/2.8
Camera SystemMirrorless
Lens MountSony E
AutofocusYes
Focus TypeAuto, Manual
Image StabilizationNone
Filter Thread58mm

Description — Rokinon 18mm f/2.8

The Rokinon 18mm f/2.8 is a prime wide-angle lens designed for Sony E-mount mirrorless cameras with full-frame coverage. Tipping the scales at just 145g, it is a genuinely compact option for photographers who want a wide-angle lens without the weight penalty. The maximum aperture of f/2.8 and minimum aperture of f/22 provide a broad range of exposure control.

Inside, the optical design uses 9 elements in 8 groups, with a sophisticated mix of 3 aspherical elements, 3 extra-low dispersion elements, and 2 high refractive elements. Ultra Multi-Coating is applied across the elements to help reduce flare and ghosting. The lens supports both autofocus and manual focus, and the minimum focusing distance is 9.8 inches. A 58mm filter thread is standard.

Note that this lens has no image stabilization built in.

Pros — Rokinon 18mm f/2.8

  • ✓Lightweight at just 145g — well-suited for travel and everyday carry on Sony E-mount bodies
  • ✓Full-frame coverage at 18mm provides a genuinely wide field of view
  • ✓Complex optical construction with 3 aspherical, 3 extra-low dispersion, and 2 high refractive elements across 9 elements in 8 groups

Cons — Rokinon 18mm f/2.8

  • ✗No image stabilization, as confirmed in specifications
  • ✗Single focal length at 18mm offers no zoom flexibility
  • ✗Minimum focusing distance of 9.8 inches may limit very close-up work

Resources & Downloads — Rokinon 18mm f/2.8

Manuals & Guides

Frequently Asked Questions — Rokinon 18mm f/2.8

Is this lens compatible with full-frame Sony cameras?+
Yes. The lens format is specified as full frame, meaning it is designed to cover a full-frame image circle. It mounts via the Sony E lens mount.
Does this lens have image stabilization?+
No. The specifications confirm that image stabilization is set to 'None.' Any stabilization would need to come from a camera body with in-body stabilization.
What filter size does this lens use?+
The filter thread size is 58mm, which is a common diameter with broad availability across filter brands and types.
How close can I focus with this lens?+
The minimum focusing distance is 9.8 inches. This allows for some close-subject work, though it is not a macro lens.
What is the optical construction of this lens?+
The lens features 9 elements arranged in 8 groups. The design includes 3 aspherical elements, 3 extra-low dispersion elements, and 2 high refractive elements.
Can I use manual focus with this lens?+
Yes. The focus type supports both auto and manual operation, so you can switch between autofocus and manual focus depending on your shooting needs.

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