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
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Lens Overview — Rokinon 8mm T3.8
Key Features — Rokinon 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 Specifications — Rokinon 8mm T3.8
| Spec | Detail |
|---|---|
| Use Cases | Creative Effects |
| Lens Type | Fisheye |
| Format | APS-C |
| Zoom/Prime | Prime |
| Focal Length | 8mm |
| Maximum Aperture | f/3.8 |
| Camera System | Mirrorless |
| Lens Mount | Canon EF, Nikon F, Sony E, Micro Four Thirds |
| Autofocus | No |
| Focus Type | Manual |
| Image Stabilization | None |
| Weight | 420g |
Description — Rokinon 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.
Pros — Rokinon 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
Cons — Rokinon 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
Reviews — Rokinon 8mm T3.8
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