Rokinon

Rokinon RKHD8MV-S HD 8mm Fisheye Lens

5.0 (2 reviews)

Ultra-wide 8mm fisheye lens with de-clicked aperture and geared focus ring for Sony Alpha shooters.

$299.99*
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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 RKHD8MV-S 8mm t/3.8 Fisheye Lens is built with videographers and creative photographers in mind. Its de-clicked aperture ring allows stepless, silent exposure transitions during recording, while the integrated geared focus ring pairs directly with follow-focus systems commonly used in cinema rigs. The HD-designated optics deliver high-resolution imagery across the full 180° field of view, and multi-element coatings help suppress flare and ghosting — important considerations given how much light enters an ultra-wide fisheye design.

A practical design touch is the removable petal hood. With the hood attached, the lens is optimized for APS-C Sony Alpha bodies, avoiding heavy vignetting in the corners. Removing the hood opens up the full circular fisheye projection on full-frame Alpha cameras. Because this is an entirely manual lens — no autofocus motor, no electronic aperture control, and no EXIF communication — it keeps the build simple, lightweight, and free of electronic failure points, though users will need to be comfortable setting focus and exposure manually.

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

Specifications

Focal Length
8mm
Maximum Aperture
t/3.8 (de-clicked)
Lens Mount
Sony Alpha (A-mount)
Angle of View
180°
Sensor Compatibility
APS-C and Full-Frame (hood removed)
Focus Type
Manual (geared focus ring)
Special Features
Removable hood, de-clicked aperture, HD optics

Pros & Cons

👍 Pros

  • De-clicked aperture ring enables smooth, silent exposure pulls ideal for video work.
  • Full 180° angle of view delivers dramatic fisheye distortion for creative compositions.
  • Geared focus ring is ready for follow-focus systems right out of the box.
  • Removable petal hood lets you switch between APS-C and full-frame coverage.
  • HD multi-coated optics help control flare and ghosting across the wide field of view.

👎 Cons

  • Manual focus only, with no electronic communication to the camera body for EXIF data.
  • Heavy barrel distortion is inherent to the fisheye design and cannot be optically corrected.
  • A-mount limits compatibility; E-mount users would need a separate adapter.
  • No image stabilization, so handheld video at slow shutter speeds can show shake.
  • Fixed 8mm focal length offers no zoom flexibility.

Frequently Asked Questions

Yes. On APS-C bodies it works with the hood attached. On full-frame bodies, removing the hood provides the full 180° fisheye field of view.
The aperture ring has been de-clicked so it turns smoothly and silently, allowing seamless exposure changes during video recording without audible clicks.
Yes, the built-in geared focus ring is designed to mate directly with industry-standard follow-focus rigs without additional adapters.
This is a fully manual focus lens. There is no electronic autofocus or communication with the camera body.
It uses the Sony Alpha (A-mount) bayonet mount, so it fits Sony Alpha DSLR and SLT bodies natively.