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Rokinon 12mm T3.1 Full Frame Cine DS Fisheye Lens for Pentax K Mount, 8 Groups / 12 Elements, 7.9" / 20.07cm Minimum Focus Distance

SKU: RK12T31CDSPX

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Reviews about this item

Review Summary

2022-03-23T08:43:27

Rated 5 out of 5

Fits well for my work.

Using this with an Ursa Mini 4k and a BMPCC 6k Pro. Although not a cine lens, it works well. Comes out to about 18mm 35mm equivalent with an acceptable fisheye distortion for most work. Focus can almost always stay at infinity for my work so no camera jitter from adjusting focus. Great on a gimbal. Has that Rokinon slightly soft beautiful video look.

WALTER E.

2021-07-26T08:56:00

Rated 4 out of 5

Landscapes edge sharpness

Happy with the edge to edge sharpness.

RAYMOND G.

2020-12-31T07:56:29

Rated 5 out of 5

Nice lens

It really takes great shots. No need to spend the money on a Canon. All manual but easy to get used to. Quite sharp.

MICHAEL B.

2020-08-11T09:51:39

Rated 5 out of 5

Great product

Great lens, performed as intended. No complaints

BRYAN G.

2020-07-28T13:54:38

Rated 4 out of 5

Rokinon 12mm Fisheye Lens for Sony Review

It’s a fun lens, and fair quality for the price. Would recommend this to anyone with a similar budget for a fisheye lens!

JUSTENE B.

2019-07-04T15:06:46

Rated 4 out of 5

Great little lens so far

Trying to get used to the perspective of fisheye. First one ever owned. I've been playing with it for only a short period of time and so far I am impressed. This is a very sharp lens and I can't wait to try long exposure night shots with it

Mark F.

2019-01-04T16:53:48

Rated 4 out of 5

Surprised

Bought this to use in the waterhousing for surf photography. I am surprised that it works pretty darn good good for a manual lens for sports/action.

John L.

2018-10-21T09:34:58

Rated 5 out of 5

Sam/Rok 12mm F2.8

This is a great 12mm FX lens at a great price. Acuity, contrast, color all first rate. Low distortion for a 12. Nothing to hold you back from saving money and getting a no compromise 12mm. Note: It is manual focus. For this working pro, that is no big deal as DoF is so big (as with all superwides).Just buy it if you need 12mm.

LARRY I.

2018-04-15T16:45:17

Rated 5 out of 5

Very satisfied with this purchase

I bought this to go with my A7RII. Of course, it is a manual lense but I was pleasantly surprised that it works with the focus assist in my camera. Appears to be sharp, maybe a little soft on the edges, but is a good lens at a nice price. Adorama was very quick to fill the order and send it out for quick delivery.

Joann W.

2018-02-28T12:14:40

Rated 5 out of 5

i’m impressed!

to be honest, my expectations were low going into this purchase based on previous Rokinon experiences, This particular lens has really impressed me. it’s build quality is solid and i’ve come to love the manual nature of this lens. if you are worried about the lack of autofocus, for me, it isn’t missed. C’mon, if you cant tell when something is in focus or not maybe photography isn’t your thing (haha), because of the super wide nature of this lens it’s really easy to focus IMO. my copy is sharp throughout the frame, even at the corners. it’s super fun getting creative with this lens.

Rob R.

2017-09-15T09:13:45

Rated 1 out of 5

This item was returned

I could not manipulate it on my camera.

GEORGE M.

2017-08-29T11:47:39

Rated 5 out of 5

Great Fisheye Lens! Definitely Recommended!

Love it! Great lens, easy to manual focus. Use focus peaking or zoom in. I am a university photography professor. Quality is very good and it is very sharp.

Ana B.

2017-07-12T23:15:16

Rated 4 out of 5

Solid heavy metal build, sharp focus, handles lens flare well, star bursts at night are amazing! A nust have lens!

Definitely would recommend buying this lens. I use it on my Nikon D610 and I am very happy with the results. At F22 you basically cant take an out of focus picture and the star bursts from this lens are simply amazing. The only way you could possibly make this better is if you put in autofocus or in camera aperture control but neither of those are big factors for how I shoot at night. See examples of my fisheye photos with this lens at www.ZariaGPhotography.com

ZARIA G.

2016-12-26T17:28:50

Rated 5 out of 5

Sweet

Optics are great. If you like fisheye distortion this one is somewhat mild compared to some others and holds sharpness to the edges stopped down a notch or two. Stopped down to f8 and hyperfocal focused it becomes point and shoot. The grease used for the focus ring is perfect... one finger focus is possible. I use a sony A7RII and mostly legacy Nikon glass so I ordered this in nikon mount to get the smallest size for the camera bag. If you don't want curved lines go with the 14mm Rokinon. I like it equally well but more caution is needed when focusing and selecting aperture combinations for good edge sharpness.

David M.

2016-12-25T07:57:51

Rated 5 out of 5

great lens

I have the Rokinon 24mm f 1.4 lens for night photos using my full frame Canon 5d Mark III so am used to the manual lens. I wanted a wider lens also for night photography so this fit the bill. It is fisheye so I defish the photo in Photoshop for landscapes in the horizontal orientation. For vertical orientation, the defish is mostly unnecessary because the distortion is minimal. The photos are very sharp with some distortion on the vignette edges. The focus is accurate at infinity, unlike my 24mms lens so I don't have to tape it in place. It is a great lens, especially for the price.

Carol F.

2016-12-19T13:04:09

Rated 3 out of 5

Great price and Build but notT super sharp

Great price and solid build. Available under 3 different company names. I tested it indoors and outdoors. The manual focus was fine because anything over 3 feet is set to infinity. The manual F-stop was no big deal. I returned it because it was not very sharp when zoomed in to 100%. Adorama made the exchange simple. I purchased the Canon 8-15mm Fisheye. After extensive testing, the Canon has a zoom, has auto-focus, F-stop is controlled by the camera, and it is sharper (although 3x the price).

AL G.

2016-11-29T04:32:51

Rated 4 out of 5

WIDE angle shots

Great little lens.. I purchased one for my Sony A7r 2 and one for my Canon 5Ds..

WILLARD G.

Rokinon 12mm F2.8 Specifications

About Rokinon 12mm F2.8

FEATURED REVIEWS

i’m impressed!

By Rob R.

to be honest, my expectations were low going into this purchase based on previous Rokinon experiences, This particular lens has really impressed me. it’s build quality is solid and i’ve come to love the manual nature of this lens. if you are worried about the lack of autofocus, for me, it isn’t missed. C’mon, if you cant tell when something is in focus or not maybe photography isn’t your thing (haha), because of the super wide nature of this lens it’s really easy to focus IMO. my copy is sha...

View full Review

Sweet

By David M.

Optics are great. If you like fisheye distortion this one is somewhat mild compared to some others and holds sharpness to the edges stopped down a notch or two. Stopped down to f8 and hyperfocal focused it becomes point and shoot. The grease used for the focus ring is perfect... one finger focus is possible. I use a sony A7RII and mostly legacy Nikon glass so I ordered this in nikon mount to get the smallest size for the camera bag. If you don't want curved lines go with the 14mm Rokinon. I ...

View full Review

The Rokinon 12mm T3.1 Full Frame Cine DS Fisheye Lens for Pentax K Mount is a lens optimized for digital cinematography and as such provides a de-clicked manual aperture for smooth and silent adjustment and unified focus and aperture gears for use with follow focus accessories. Also, focus, aperture and depth of field markings are on the side of the lens to aid focus pullers who typically operate on the side of the camera. Aperture is measured in absolute T-stops to provide accurate and consistent exposure across lenses and color rendition is matched with other Rokinon cine lenses for consistency. This fisheye lens provides a 180 degree diagonal angle of view on full-frame cameras for an ultra-wide angle, distorted perspective that is useful for architectural interiors, landscapes and creative experimentation in any application. The T3.1 maximum aperture is effective in low light situations and enables some measure of shallow depth of field control.

The lens' optical design consists of 12 lens elements arranged in 8 groups including three elements made of low dispersion ED glass and two aspherical lens elements to minimize coma and chromatic aberrations. Highly effective nano crystal anti-reflection (NCS) coating applied together with UMC coatings improve light transmission and reduce ghosting. Its internal focus system does not extend the front elements during focus and minimizes the effects of lens breathing. This Pentax K Mount manual focus lens optimized for digital cinema provides a de-clicked manual aperture for smooth and silent adjustment and unified focus and aperture gears for use with a traditional follow focus. Also, focus, aperture and depth of field markings are on the side of the lens to aid focus pullers who typically operate on the side of the camera. Aperture is measured in absolute T-stops to provide accurate and consistent exposure across lenses and color rendition is matched with other Rokinon cine lenses for consistency.

An ultra wide-angle fisheye lens with a 12mm focal length on full-frame cameras and an 19.2mm equivalency when used on APS-C and Super 35mm format cameras. Its distorted perspective is useful for interiors, landscapes, group shots and many creative wide-angle applications. Extra low dispersion and aspherical lens elements reduce aberrations for sharp, color-accurate imaging. Nano crystal coating and ultra multi-coating on the lens elements improves light transmission and reduces ghosting and flare. Sturdy metal barrel with removable petal-shaped lens hood.

What's in the box:

  • Rokinon 12mm T3.1 Full Frame Cine DS Fisheye Lens for Pentax K Mount
  • Removable Petal-Shaped Lens Hood
  • Front Lens Cover
  • Rear Lens Cap
  • Rokinon 1 Year Limited Warranty