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Black dual fisheye lens with two front elements, cylindrical barrel, RF-S mount, 9.1 in cube shape

Canon

Canon RF-S 3.9mm f/3.5 STM Dual Fisheye camera lens

SKU CH-4FN8-Y9XY5

Dual fisheye lens captures stereoscopic 180-degree VR video on APS-C sensors with 144-degree field of view

  • Lens aperture16 mm
  • Focus systemAuto/Manual
  • Part type or number6578C002
  • Auto-focusAuto/Manual
  • Product typeStandard
  • Compatible withMirrorless Camera
  • Designed for APS-C VR creation on EOS R7
  • 144º capture enables 180º stereoscopic 3D viewing
  • Dual UD elements plus ASC reduce ghosting
  • 5 mm filter thread and rear gel holder
  • STM leadscrew drive gives confident pre-focus before filming

VR lens for APS-C mirrorless cameras

The Canon RF-S 3.9mm f/3.5 STM Dual Fisheye is built for the EOS VR System and works exclusively with the EOS R7 running firmware 1.5 or later. It captures stereoscopic 3D 180-degree VR imagery on a single APS-C sensor, targeting creators who want immersive output without a multi-camera rig. The 144-degree field of view keeps tripods and microphones out of the frame during recording.

Mounts like a standard RF lens, focus is STM only

The lens attaches to the RF-S mount and uses a leadscrew-type stepping motor for autofocus, allowing pre-focus before filming. Servo AF is not available during video shooting, so focus must be set beforehand or adjusted manually. A rear 30.5mm screw-on filter thread and gel filter holder are provided, but there is no image stabilization built into the optic.

Single-file 180 VR on one sensor.

The folded optical design with two UD elements and Air Sphere Coating delivers a 144-degree capture that maps to 180-degree viewing in a single file, simplifying post-production. It comfortably handles immersive VR workflows on the EOS R7 but runs out of compatibility with any other current camera body. Buyers needing full-frame coverage or multi-camera flexibility cannot use this lens.

How it compares

Measured against everything we stock in Interchangeable Camera Lenses, at today’s prices. Recalculated every night.

Price $833.99
Pricier than about 71% of the 2,570 comparable items (median $546.49).

Specifications

Product
Brand nameCanon
Model name6578C002
Part number6578C002
Product typeStandard
Product colorBlack
Part type or number6578C002
Audio & video
Lens aperture16 mm
Focus systemAuto/Manual
StabilizationNo
Auto-focusAuto/Manual
Size & build
Product dimensions9.1 in × 9.1 in × 9.1 in
Product weight0.64 lb (0.29 kg)
Compatibility
Compatible withMirrorless Camera

Questions about this item

How do I confirm the lens is capturing 144º stereoscopic VR correctly after mounting it on my EOS R7?

Attach the lens to an EOS R7 running firmware 1.5 or later, record a test clip, then review the single-file output in Canon's VR software to verify the 144º field of view renders as 180º 3D VR without visible tripod or microphone intrusion.

What accessories are included and which must be purchased separately for this RF-S 3.9mm f/3.5 STM Dual Fisheye lens?

The lens ships with front and rear caps; a 30.5mm screw-on filter or the rear gel-filter holder are optional purchases, and the EOS R7 camera plus Canon VR software are required but sold separately.

Should I choose this 3.9mm f/3.5 APS-C dual fisheye or the 5.2mm f/2.8 L full-frame version for my VR workflow?

Select the 3.9mm f/3.5 if you shoot with an EOS R7 or other APS-C RF body and want a lighter 0.64 lb lens; choose the 5.2mm f/2.8 L for full-frame EOS R cameras when you need the wider f/2.8 aperture and L-series build.

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