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Rokinon 8mm T3.8 Fisheye Lens

The Rokinon 8mm T3.8 is a 8mm f/3.8 lens designed for Canon EF, Nikon F, Sony E, Micro Four Thirds mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Rokinon 8mm T3.8 Fisheye Lens

Rokinon 8mm T3.8 Fisheye Lens

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Lens OverviewRokinon 8mm T3.8

The Rokinon 8mm T3.8 Fisheye Lens is a manual-focus prime lens designed specifically for APS-C sensor cameras, offering an ultra wide-angle fisheye perspective at a fixed 8mm focal length. With a maximum aperture of T3.8, this lens delivers a reasonably fast light-gathering capability for a fisheye optic, making it a practical choice for shooters working in a variety of lighting conditions. The lens is built around a manual focus system, giving the operator direct, tactile control over focus without relying on any autofocus mechanism.

There is no image stabilization on board, so shooters will need to account for camera movement through their technique or support equipment. Weighing in at 420g, the lens is relatively compact and manageable for handheld work. One of its notable strengths is broad mount compatibility — it is available in Canon EF, Nikon F, Sony E, and Micro Four Thirds mounts, making it accessible across a wide range of mirrorless camera systems.

The lens is rated for the mirrorless camera ecosystem and is well-suited to APS-C format bodies. No filter thread size is specified, which is typical of fisheye designs given the extreme curvature of the front element.

Key FeaturesRokinon 8mm T3.8

8mm Fisheye Prime: Fixed 8mm focal length produces a dramatic fisheye field of view on APS-C sensor cameras, ideal for action, skate, and creative wide-angle shooting.

T3.8 Maximum Aperture: T3.8 light transmission rating allows for usable performance in lower light conditions without requiring a tripod in many situations.

APS-C Format Coverage: Designed specifically for APS-C sensor cameras, delivering the intended fisheye effect without vignetting on compatible bodies.

Manual Focus Design: Dedicated manual focus ring gives the shooter direct, tactile control over focus, with no autofocus motor to add complexity or noise.

Multiple Mount Options: Available in Canon EF, Nikon F, Sony E, and Micro Four Thirds mounts, making it compatible with a broad range of mirrorless and DSLR camera systems.

No Filter Thread: The extreme curvature of the front element means standard screw-on filters cannot be attached, which is typical of fisheye lens designs.

Lens SpecificationsRokinon 8mm T3.8

Rokinon 8mm T3.8 full specifications
SpecDetail
Use CasesCreative Effects
Lens TypeFisheye
FormatAPS-C
Zoom/PrimePrime
Focal Length8mm
Maximum Aperturef/3.8
Camera SystemMirrorless
Lens MountCanon EF, Nikon F, Sony E, Micro Four Thirds
AutofocusNo
Focus TypeManual
Image StabilizationNone
Weight420g

DescriptionRokinon 8mm T3.8

The Rokinon 8mm T3.8 Fisheye Lens is a prime, manual focus ultra wide-angle fisheye designed for APS-C format mirrorless cameras. With a fixed focal length of 8mm and a maximum aperture of T3.8, this lens is built for shooters who want a dramatic fisheye perspective with reliable light transmission. The lens operates entirely through manual focus — there is no autofocus system — giving users direct control over their focus pulls and placement. Image stabilization is not included, so camera support and technique are important considerations.

At 420g, the lens is reasonably light for its category. Mount options are broad, covering Canon EF, Nikon F, Sony E, and Micro Four Thirds, ensuring compatibility across many APS-C mirrorless and DSLR platforms. No filter thread size is specified, consistent with the front element design typical of fisheye optics.

ProsRokinon 8mm T3.8

  • Fixed 8mm focal length delivers a consistent ultra wide-angle fisheye field of view on APS-C sensors
  • Maximum aperture of T3.8 provides solid light transmission for a fisheye prime
  • Available in four mounts — Canon EF, Nikon F, Sony E, and Micro Four Thirds — covering a wide range of camera systems

ConsRokinon 8mm T3.8

  • Manual focus only — no autofocus capability, which may slow down fast-paced or run-and-gun shooting
  • No image stabilization, requiring steady technique or support rigs to minimize camera shake
  • No filter thread size available, limiting traditional filter use

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Manuals & Guides

Frequently Asked QuestionsRokinon 8mm T3.8

Does this lens support autofocus?+
No, the Rokinon 8mm T3.8 Fisheye is a manual focus lens only. The focusType is listed as Manual and autoFocus is not supported, so all focus adjustments must be made by hand.
Which camera mounts is this lens available in?+
The lens is available in Canon EF, Nikon F, Sony E, and Micro Four Thirds mounts. This makes it compatible with a broad range of mirrorless and DSLR camera systems, provided the body uses an APS-C sensor.
What sensor format is this lens designed for?+
The Rokinon 8mm T3.8 Fisheye is designed for APS-C format sensors. Using it on a larger sensor format may result in vignetting or incomplete image coverage.
Does this lens have image stabilization?+
No, image stabilization is listed as None in the specifications. Shooters should use stable technique, a tripod, or in-body stabilization from their camera body if available.
Can I use standard screw-in filters with this lens?+
No filter thread size is specified for this lens. This is common with fisheye lenses due to the extreme curvature of the front element, which typically prevents the use of standard screw-in filters.
How heavy is the Rokinon 8mm T3.8 Fisheye?+
The lens weighs 420g, making it a relatively manageable prime for handheld or gimbal-mounted shooting setups.

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