
Rokinon
Rokinon RKHD8MV-S HD 8mm Fisheye Lens
★★★★★
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
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
Is this lens compatible with both APS-C and full-frame Sony Alpha cameras?
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.
What does "de-clicked aperture" mean on this lens?
The aperture ring has been de-clicked so it turns smoothly and silently, allowing seamless exposure changes during video recording without audible clicks.
Does the geared focus ring work with standard follow-focus systems?
Yes, the built-in geared focus ring is designed to mate directly with industry-standard follow-focus rigs without additional adapters.
Is this a manual focus or autofocus lens?
This is a fully manual focus lens. There is no electronic autofocus or communication with the camera body.
What mount does this lens use?
It uses the Sony Alpha (A-mount) bayonet mount, so it fits Sony Alpha DSLR and SLT bodies natively.