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
B h photo.32817553
24 February 2016

This is what I call a "fun lens".I got the Canon version, which is totally manual. This is really not an issue. Once you get the hand of it, it's very easy to use and the pictures look great!On the Canon it covers a field of vision of around 167 degrees. You can get a whole room on one shot.

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.

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.

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.

B h photo.32817553
8 November 2017

Took it out for test run and works great. Had a lot of fun going back to old school with everything manual. I bought this to do night shots. Haven't been able to go and do that but, I think it going to be just fine.

B h photo.32817553
2 November 2017

Its OK. I bought it on a whim for very occasional use.

B h photo.32817553
2 November 2017

Its OK. I bought it on a whim for very occasional use.

16 October 2017

Worked well for a year or so... Softer at anything under F5.6. My internal aperture mechanism fell apart for no reason. You can hear a little rattle and turning the ring no longer changes the aperture. Stuck at who knows what F stop currently (very narrow that's all I know).

B h photo.32817553
14 October 2017

I use this lens on my D3300 and my 810. It meters on the 810 but it is not a full frame lens; it does not meter on the D3300. That said, if you are okay doing everything manually, it is an incredibly sharp lens and it makes great photos. I really had a great with it traveling in Asia.

4 October 2017

A joy to photograph with.

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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