Video Chat with a Photography Expert - Live

Rokinon Reflex 300mm f/6.3 UMC CS Lens for Sony A

BH #RO30063SA • MFR #300M-S
Key Features
  • Aperture Range: Fixed f/6.3
  • For APS-C Sensors, 450mm (35mm Equiv.)
  • Catadioptric Telephoto Lens
  • UMC Multi-Layer Anti-Reflective Coating
The Rokinon Reflex 300mm f/6.3 UMC CS Lens is a mirror lens designed specifically for use on APS-C-format Sony A-mount DSLR cameras. The lens' Cassegrain design enables it to achieve a 450mm 35mm-equivalent focal length perspective within a compact and lightweight form factor that is significantly smaller than a traditional 300mm lens. It features a fixed f/6.3 aperture and utilizes manual focus operation for focusing as closely as 3.6'.
No Longer Available
Trade in your gear for cash: Learn more
Ask Our Experts
800.952.1815

Rokinon 300mm f/6.3 Reflex Overview

The Rokinon Reflex 300mm f/6.3 UMC CS Lens is a mirror lens designed specifically for use on APS-C-format Sony A-mount DSLR cameras. The lens' Cassegrain design enables it to achieve a 450mm 35mm-equivalent focal length perspective within a compact and lightweight form factor that is significantly smaller than a traditional 300mm lens. It features a fixed f/6.3 aperture and utilizes manual focus operation for focusing as closely as 3.6'.

The mirror construction of the lens inherently works to reduce chromatic aberrations and a UMC (Ultra Multi Coated) coating has been applied to reduce surface reflections, lens flare, and ghosting while also contributing to improved overall contrast.

Mirror lens designed specifically for APS-C-format Sony A-mount DSLR cameras.
Catadioptric system with Cassegrain design helps to reduce the overall size of the lens while still providing a 35mm-equivalent focal length of 450mm.
A UMC coating has been applied to the lens elements to improve clarity, minimize reflections, and enhance overall image contrast.

Rokinon 300mm f/6.3 Reflex Specs

Focal Length
300mm (35mm Equivalent: 450mm)
Maximum Aperture
f/6.3
Minimum Aperture
f/6.3
Lens Mount
Sony A
Lens Format Coverage
APS-C
Angle of View
5.5°
Minimum Focus Distance
3.61' / 1.1 m
Optical Design
8 Elements in 8 Groups
Focus Type
Manual Focus
Image Stabilization
No
Filter Size
25.5 mm (Rear)
Dimensions (ø x L)
2.54 x 2.98" / 64.52 x 75.69 mm
Weight
9.17 oz / 260 g
Packaging Info
Package Weight
1.2 lb
Box Dimensions (LxWxH)
7.6 x 5.7 x 4.3"

Rokinon 300mm f/6.3 Reflex Reviews

See any errors on this page? Let us know

question

Is this lenses all manual (focus and iris)? Can it be used with BlackMagic 2.5k mount MFT?
Asked by: Anonymous
The BlackMagic Cinema MFT mount camera requires use of manual focus and manually adjustable aperture lenses. The silver Rokinon Reflex 300mm f/6.3 ED UMC CS Lens will mount on the camera but will not allow you to adjust the aperture of the lens as this lens has a fixed aperture of f6.3. The benefit of the camera using the MFT mount is the availability of adapters which will allow one to mount various manual focus/manual aperture lenses to the camera.
Answered by: Yos O.
Date published: 2018-08-28

question

Will this work with an extender such as my KENKO C-AF1 1.5X DG?
Asked by: Anonymous
I would not recommend this approach. Further, I would advise that the Canon 75-300mm lens may be a more desirable option, as it is more affordable, has autofocus, a faster aperture, and can be used with a teleconverter: http://bhpho.to/1nuVUxF
Answered by: Heather S.
Date published: 2018-08-25

Can this use with tel converter?

Can this use with tel converter?
Asked by: Mei-Ling
Hi, teleconverters work best with lenses with a maximum aperture of f/2.8; this lens has a maximum aperture of f/6.3, so, although you could mount the lens to a teleconverter, there would be no autofocus or auto exposure.
Answered by: Boyd
Date published: 2020-01-12

how much space there is between the REAR 25.5mm ...

how much space there is between the REAR 25.5mm threads and the outside of the mount? I would like to use my existing AP filters which would require putting an adapter on the rear threads.
Asked by: Harrison
Please direct your inquiry to Rokinon; RokinonDistributed By - ELITE BRANDS INC.Tel: (800) 441-1100 Website http://www.rokinon.com/ Email [email protected]
Answered by: Rob
Date published: 2020-06-15

question

Is this a good lens to capture my son in marching band on the football field? Night performances under lights. Will this work on my 7d camera?
Asked by: Patty M.
This is a fix focal length and manual focusing lens with a preatty small aperture it will be compatible with your canon 7d , but for a moving object in a low light , I wouldn't recommend it, instead I will use some telephoto zoom with auto focus and a better f stop performance.
Answered by: James B.
Date published: 2020-07-19

Hi is it work with sony full frame like a7 iii ? ...

Hi is it work with sony full frame like a7 iii ? Or is it need adapter?
Asked by: husin
The Rokinon Reflex 300mm f/6.3 ED UMC CS Lens for Sony E Mount is designed for the Sony E-mount used on the Sony Alpha a7 III Mirrorless Digital Camera. No adapter is designed to connect the lens to the camera. However, do note that the Rokinon Reflex 300mm f/6.3 ED UMC CS Lens for Sony E Mount is designed for the smaller APS-C sensor. As such, you would need to use the APS-C Crop Mode when using this lens on your camera. You can access this setting by going to the MENU on your camera and going to [Camera Settings 1] → [APSC/Super 35mm] → [APS-C S35 Shoot: Manual] and [ON].
Answered by: Manzell
Date published: 2020-03-08

question

i am knew to this so that being said is this lens good for zooming in from a far distance?
Asked by: omar a.
This is a telephoto lens, so yes, it is used to shoot from far distances.
Answered by: Heather S.
Date published: 2018-08-25

question

Is this lenses all manual (focus and iris)? Can it be used with BlackMagic 2.5k mount MFT?
Asked by: Anonymous
The BlackMagic Cinema MFT mount camera requires use of manual focus and manually adjustable aperture lenses. The black Rokinon Reflex 300mm f/6.3 ED UMC CS Lens will mount on the camera but will not allow you to adjust the aperture of the lens as this lens has a fixed aperture of f6.3. The benefit of the camera using the MFT mount is the availability of adapters which will allow one to mount various manual focus/manual aperture lenses to the camera.
Answered by: Yos O.
Date published: 2018-08-28
  • y_2023, m_11, d_9, h_7CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.37
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_12
  • loc_en_US, sid_1047007, prod, sort_[SortEntry(order=HAS_STAFF_ANSWERS, direction=DESCENDING)]
  • clientName_bhphotovideo