Rokinon 8mm Ultra Wide Angle f/3.5 Fisheye Lens for Pentax K Mount

Model #FE8M-P

USA Version
Rokinon fe8m p 1
Rokinon fe8m p 1
Rokinon fe8m p 4
Rokinon fe8m p 2
Rokinon fe8m p 3
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Dimensions (dxl) Approx. 2.95 x 2.98" (75 x 75.8 mm)
Weight 14.6 oz (413.91 g)


Minimum focus distance 1.0' (30.48 cm)
Focal length 8 mm
Camera mount type Pentax K
Aperture Maximum: f/3.5
Minimum: f/22
Angle of view 180°
Groups/elements 7/10
Format compatibility Pentax Digital (APS-C)


Autofocus No
Tripod collar No
Image stabilization No
User Reviews
9 February 2018

Not a big fan of this lens. The auto exposure doesn’t work that great and it makes it hard to focus correctly. I’ve had better result with cheaper fish eye lens! It’s too late for me to return it. i don’t recommend it!!

14 June 2012

Great lens for the price. If you know the various personality issues of a fish eye lens (distortion, etc) and accept that this is manual focus and aperture adjustment, then you should love this lens. It is very solid and well made.

27 February 2018

It's not as sharp as I had hoped but awesome value.

1 February 2018

Nice lens for the price.

9 January 2018

Don't let manual focus scare you. This is my second M focus fisheye and I have never had a problem, just put it to infinity and you're golden. I hated spending the money on it but once I got it, oh man was I ever stoked. Build quality is amazing compared to cheaper fisheyes (ex. Opteka).

4 January 2018

It's a fun lens, but picture quality isn't the best. Can't expect a lot for a cheap lens though. Don't use it on a full frame camera. Ice got a 6d and a 650d but only use it on the 650. Manual aperture as well, but can usually put in on about f8 and everything is in focus.

22 December 2017

Great lens for adventures. I use it on my Fujifilm XT10 with an mount adapter.

18 December 2017

Amazing value. I like this lens for a cool effect. Not pro, but still cool.

11 November 2017

Unlike a normal kit lens the thing I like the most about this lens is just how solid it feels. It's a chunk of metal that just feels like a proper lens. There's a confidence this lens shares with my 30 year old lenses the new plastic nikkors don't.

3 November 2017

Was very anxious to try this lens out, but ended up disappointed. I was never able to find any combination of settings to obtain an image in focus. I started out years ago on pre-digital old-fashioned film cameras so I understand manual focus and manual settings.

Product Highlights
  • Ultra Wide-Angle 8mm Fisheye Lens
  • For APS-C Size Image Formats
  • Rounded Image When Used With Full Frame
  • Hybrid Aspherical Lenses -- Sharp Images
  • Multi-Layer Coating to Reduce Flare
  • Minimum Focusing Distance of 12"
  • Built-In Petal-Type Lens Hood
In The Box
  • Rokinon 8mm Ultra Wide Angle f/3.5 Fisheye Lens for Pentax K Mount
  • Lens Pouch
  • Front and Rear Lens Caps
  • Instruction Manual
  • Limited 1-Year Worldwide Warranty
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