Samyang Reflex 300mm f/6.3 ED UMC CS Lens for Micro Four Thirds (Silver)

Model #SY300M-MFT-S

USA Version
Samyang sy300m mft s 1
Samyang sy300m mft s 1
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Weight 11.2 oz (318 g)
Dimensions (DxL) Approx. 2.6 x 2.9" (65 x 74 mm)
Filter Thread None


Format Compatibility Micro Four Thirds
Angle of View 5.5°
Minimum Focus Distance 2.95' (90 cm)
Magnification Not Specified By Manufacturer
Focal Length 300mm
Comparable 35mm Focal Length: 600 mm
Diaphragm Blades None
Elements/Groups 9/9
Aperture Maximum: f/6.3
Camera Mount Type Micro Four Thirds


Tripod Collar No
Autofocus No
Image Stabilization No
Expert Reviews
17 October 2014

The Samyang Reflex f/6.3 300mm ED UMC CS represents excellent value for money for any photographer who wants a super-telephoto lens for a very affordable price.

User Reviews
B h photo.32817553
10 November 2015

Samyang Reflex 300mm f/6.3 ED UMC CS Lens for Fujifilm X MountI used this lens on a Fuji X-T10 camera. I typically shoot at a fixed ISO 200, but for this lens, I increased the ISO up to 800 when needed in order to keep a 1/450 sec shutter speed, following the reciprocal rule of focal length and...

26 November 2016

Do not expect top tier glass sharpness. I was disappointed with some super moon pictures taken with this.

9 June 2017

Very narrow focus, very hard to use successfully.

B h photo.32817553
13 April 2016

For the money, this is a great telephoto lens. You sacrifice a little sharpness with the reflex, but it still makes great images. Well worth the money for a telephoto lens.

13 July 2015

I bought this lens for astrophotography and I think it works well. I wanted a high-magnification lens for my micro 4/3 camera (Olympus E-PL5) that I piggyback on a polar-aligned telescope. On the first night out I recorded and stacked 11 two-minute exposures of the Small Sagittarius Star Cloud, M24.

B h photo.32817553
18 March 2015

Before purchasing this lens I read through the other reviews and IMO agree with the other reviewers that this lens produces a reasonably sharp image at this price point. I shot a series of test images and found that if I applied the PS plug-in NIK Sharpener Pro and used Layer Masks to sharpen the...

17 March 2015

Affordable 300mm lens. Manual focus only. Don't let the low price fool you. It has a sturdy build.

1 February 2015

Early review, I'll update as I get more experience with this lens: I bought my first SLR camera in the mid 1960's, and I was fascinated by (amongst other things) the reflex lenses that had appeared on the market at that time.

26 June 2014

disclaimer: me stranger, please forgive my english :-) small fun lens for the NEX camera system. i use it on a nex-6, and it's hard to use, really hard to get sharp pictures, but it's still possible.

B h photo.32817553
21 February 2014

My first impression upon unpacking this lens was to realize how small and light it is. Then I was impressed by how smooth the focusing ring was, without stickiness or backlash, a must for this kind of lens.Once I got enough practice focusing with it, I was impressed with its sharpness.

Product Highlights
  • Catadioptric Telephoto Lens
  • 35mm Equivalent Focal Length: 600mm
  • Fixed f/6.3 Aperture
  • UMC Multi-Layer Anti-Reflective Coating
  • One Extra-Low Dispersion Glass Element
  • Manual Focusing as Close as 2.95'
In The Box
  • Samyang Reflex 300mm f/6.3 ED UMC CS Lens for Micro Four Thirds Mount (Silver)
  • Front Lens Cap
  • Rear Lens Cap
  • Lens Hood
  • Lens Pouch
  • Limited 1-Year Warranty
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