Rokinon

Rokinon RKHD8MV-C HD 8mm T3.8 Fisheye Lens Canon - Cine Lens

4.1 (15 reviews)

See the world in a full 180-degree arc — the Rokinon 8mm T3.8 Cine Fisheye opens up immersive perspectives that no standard wide-angle can touch.

$274.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Rokinon 8mm T3.8 HD Fisheye is a lens for photographers and cinematographers who want to expand what a wide angle can do — not just capture more of a scene, but fundamentally distort and reshape it into something experiential and immersive. At 180 degrees, the field of view wraps the environment around the frame in a way that places the viewer inside the image rather than outside it. This makes the lens particularly powerful for action sports documentation, environmental portraiture where location is as important as subject, architectural and interior work, and any narrative or documentary video context where physical geography needs to feel overwhelming or expansive. The T-stop rating — as opposed to a photographic f-stop — is a cinema convention indicating actual measured light transmission, making it reliable for consistent exposure across multiple lens setups on a video production.

The de-clicked aperture ring is the feature that separates this from photographic fisheye lenses and earns it the "Cine" designation — it rotates silently and continuously, enabling smooth in-shot exposure adjustments without the click sounds that would contaminate an audio track. The 10-element optical construction and HD glass deliver resolution that holds up under modern high-resolution video and stills capture, with the removable hood providing flexibility between outdoor shooting and confined interior environments. Manual focus is the operating mode, standard practice on cine lenses and practically straightforward at this focal length given the enormous inherent depth of field. For video shooters and creative still photographers willing to work manually, the Rokinon 8mm T3.8 delivers a genuinely distinctive creative tool at an accessible price point.

Key Features

8mm ultra wide cine fisheye lens with 180 degrees angle of view

feature declicked aperture for easy video shooting

constructed of 10 elements for easy video shooting

Features HD Optics and removable hood for clearer pictures optimal for shooting on full frame cameras

Seamless aperture shifting from t3.8-t22

Lens not Zoomable

Specifications

Model
RKHD8MV-C
Focal Length
8mm
Maximum Aperture
T3.8
Minimum Aperture
T22
Aperture Type
De-clicked (seamless)
Angle of View
180 degrees
Optical Construction
10 elements
Optics
HD optical glass
Focus Type
Manual focus only
Zoom
Fixed focal length (not zoomable)
Hood
Removable
Sensor Compatibility
APS-C and Full-Frame
Mount
Canon EF

Pros & Cons

👍 Pros

  • The 180-degree field of view opens up creative perspectives for skateboarding, action, architectural, and environmental portrait work that no rectilinear wide-angle can replicate.
  • The de-clicked aperture ring allows smooth, silent exposure pulls mid-shot — an essential cine feature that makes this lens genuinely production-ready for video work.
  • The T3.8 maximum aperture lets in usable light in indoor and lower-light environments where a slower fisheye would require a more aggressive ISO push.
  • HD optical glass construction delivers sharpness that holds up in 4K and high-resolution capture — fisheye character without sacrificing resolving power.
  • The removable hood provides versatility between outdoor flare control and tight-space shooting where hood clearance becomes an issue.

👎 Cons

  • Manual focus only means autofocus-dependent shooters must adapt their technique, even if the broad depth of field at this focal length softens the learning curve.
  • Fisheye barrel distortion is a defining characteristic of the lens — if you want a rectilinear ultra-wide look, this requires de-fishing in post, which adds an editing step and crops the frame.
  • On full-frame sensors the image circle produces visible dark corners that may not suit all shooting scenarios — APS-C bodies are the more versatile platform for this lens.
  • The seamless T3.8–T22 aperture range doesn't include a true wide-open fast aperture for shallow depth of field work — bokeh at 8mm is inherently deep regardless of aperture.
  • As a fully manual lens with no electronic contacts, EXIF aperture data is not recorded and in-body image stabilization systems that rely on lens communication won't engage on compatible bodies.

Frequently Asked Questions

The Rokinon 8mm T3.8 is compatible with both APS-C and full-frame Canon EF mount cameras. On APS-C sensors it delivers the classic fisheye circular-to-edge distortion. On full-frame bodies the 180-degree angle of view produces a more pronounced circular fisheye effect with visible dark corners — factor this into your creative decision if you're shooting full-frame.
A de-clicked aperture means the iris blade ring rotates smoothly and silently without the tactile detents (clicks) that photo lenses use to step between f-stop values. This lets you pull aperture during a shot — reducing or increasing exposure on the fly — without the audible click being captured by on-camera or nearby microphones. It's essential for clean run-and-gun and documentary video work.
This is a manual focus only lens — there is no autofocus motor. The focus ring operates smoothly and the 8mm focal length's inherent depth of field at T3.8 means a large portion of the frame is in focus at once, reducing the precision required for follow focus work. For video work, manual focus is the norm on cine lenses and the broad depth of field makes this one of the easier lenses to keep sharp.
The removable hood is useful in most outdoor shooting scenarios to reduce flare and protect the front element. In very tight spaces — interiors, vehicle interiors, architectural work — removing it gives you a few extra centimeters of clearance and can allow the lens to get closer to subjects or walls without the hood entering the frame.
The 8mm fisheye's geometry is most dramatic when subjects are close to the lens — bringing a face or object within arm's reach exaggerates the perspective distortion in a way that can make for striking, character-driven environmental portraits. The minimum focus distance is close enough for intimate subject work; shooting exclusively at distance underuses the lens's creative strengths.