Rokinon 8mm f/3.5 HD Fisheye Lens with Removable Hood for Pentax K

BH #RO8PHD • MFR #HD8M-P
Rokinon
Key Features
  • Ultra Wide-Angle 8mm Fisheye Lens
  • 180º Angle of View
  • High Definition, Aspherical Elements
  • For Use with APS-C Format DSLRs
The 8mm f/3.5 Fisheye Lens with Removable Hood for Pentax K from Rokinon gives you a 180º view with dramatic, exaggerated perspective when used with an APS-C camera, or a powerful circular image floating in the frame when used with a full frame digital camera or 35mm film camera. With hybrid aspherical elements and multi-layer coating, you will produce sharply defined images with a minimum of flare and ghosting. The 8mm lens focuses as close as 12" (30.48cm) from the lens. This version of the 8mm f/3.8 Fisheye lens comes with a removable lens hood that will offer glare reduction and lens protection, but can be removed to offer an increased and unobstructed angle of view when shooting with full frame digital or 35mm cameras. 
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Rokinon 8mm f/3.5 Fisheye HD Overview

The 8mm f/3.5 Fisheye Lens with Removable Hood for Pentax K from Rokinon gives you a 180º view with dramatic, exaggerated perspective when used with an APS-C camera, or a powerful circular image floating in the frame when used with a full frame digital camera or 35mm film camera. With hybrid aspherical elements and multi-layer coating, you will produce sharply defined images with a minimum of flare and ghosting. The 8mm lens focuses as close as 12" (30.48cm) from the lens. This version of the 8mm f/3.8 Fisheye lens comes with a removable lens hood that will offer glare reduction and lens protection, but can be removed to offer an increased and unobstructed angle of view when shooting with full frame digital or 35mm cameras. 

Note:
Produces a circular, vignette image on full-frame sensors or 35mm film
Ultra wide-angle 8mm fisheye lens with exaggerated perspective for dramatic effects
Ultra-wide 180º diagonal field-of-view for APS-C size image formats—will produce a rounded image that doesn't cover the entire frame when used with compatible full frame digital cameras or 35mm film cameras
Lens is constructed with hybrid aspherical elements for outstanding, sharply defined images
Lens features super multi-layer coating to reduce flare and ghost images
Lens has a minimum focusing distance of 12" (30.48cm) for enhanced close-up shots
The petal-style lens hood can be removed so as to not interfere with the image when shooting in full frame digital or 35mm film
This lens features a mechanical aperture coupling that permits the use of aperture priority and automated exposure modes, as well as the ability to control the aperture setting with Pentax DSLRs
UPC: 084438760903

Rokinon 8mm f/3.5 Fisheye HD Specs

Focal Length8mm (35mm Equivalent Focal Length: 12mm)
Maximum Aperturef/3.5
Minimum Aperturef/22
Lens MountPentax K
Format CompatibilityAPS-C
Angle of View180°
Minimum Focus Distance12" / 30.48 cm
Optical Design10 Elements in 7 Groups
Focus TypeManual Focus
Image StabilizationNo
Filter SizeNone
Dimensions (ø x L)2.95 x 3.04" / 74.93 x 77.22 mm
Weight15.1 oz / 428 g
Packaging Info
Package Weight1.35 lb
Box Dimensions (LxWxH)6.7 x 5.25 x 5.2"
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question

Is this the KA mount or the K mount? In other words, do you have to use stop-down green button metering with this lens or not?Thanks!
Asked by: Anonymous
KA. It has automatic aperture. Can be used manually, also (has an aperture ring).
Answered by: Karim H.
Date published: 2018-08-28

question

5ti compatibility
Asked by: Brendan C.
This lens is Pentax mount and will not be compatible with the Canon Rebel T5i.
Answered by: Heather S.
Date published: 2018-08-28

question

On APS-C sensors, is this a rectilinear or circular fisheye?
Asked by: Hung N.
As per the Overview (description) this fisheye lens produces rectangular photos on an APS-C camera, such as the Pentax K-5 II. Objects with straight lines will appear curved toward the outer edges of the image. The description also says that this lens will produce a circular image when used on a Pentax dSLR with a full frame sensor.
Answered by: Scott J.
Date published: 2018-08-28

question

is this is rectilinear or circular fisheye?
Asked by: Hung N.
The lens is close to stereographic projection, a mild form of fisheye that does not compress the edges as much as traditional fisheyes. Unlike fisheye or rectlinear distortion, stereographic design yields circular spheres more perfectly round. It is the preferable projection for shooting groups of people.
Answered by: James R.
Date published: 2018-08-28

question

hey guys, just wanted to know if this will mount on my canon t3?
Asked by: Anonymous
Yes, it is fully compatible with the Canon T3.
Answered by: Matthew C.
Date published: 2018-08-28

question

aside from price is there any difference between this lens and the samyang syhd 8mm f/3.5 lens?thank you
Asked by: Anonymous
Both lenses appear to be very similar, in terms of specs and design.I think that either model would be a good choice.
Answered by: Chris L.
Date published: 2018-08-28

question

This will give me vignette using a canon t3i correct?
Asked by: Anonymous
No. When using a crop-sensor camera like the T3i, you will see a full rectangular image, with an approximate equivalent focal length of 12mm (1.5x crop factor multiplied by 8mm). You will see a vignetted circular image when using this lens on a full-frame sensor.
Answered by: Chris L.
Date published: 2018-08-28

Does this lens will produce a full (I mean, FULL) ...

Does this lens will produce a full (I mean, FULL) circular image with a Sony A7SII + Metabones in full frame mode and will cover the entire screen in APS-C mode?
Asked by: Jorge
Yes it does
Answered by: vilson
Date published: 2021-02-17
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