Rokinon 300mm Mirror Lens Review for Micro Four Thirds HD Video Samples

In this article, Keiko (of GearAddix) has helped put together a short video review of the new Rokinon 300mm F/6.3 Mirror Lens for micro-four thirds camera systems [Thanks Keiko]. If you're looking for that long zoom on a budget, this new mirror lens from Rokinon is a great option, and yes it will work on a BlackMagic Pocket Cinema camera as well.

Unlike traditional glass element lenses, the incoming light is reflected by a main mirror on the back towards a secondary mirror (located in the front), and back again towards the camera's sensor. By folding the light, these lenses can offer incredible distance while staying very compact and especially very lightweight.


Unfortunately this design also has a few disadvantages such as aperture control. This Rokinon 300mm mirror lens has a fixed F/6.3. This is the reason why an ND filter was required on an especially bright day. I guess that's not too much of a problem, as many DSLR shooters tend to carry ND filters nowadays.

B+W Static ND Filter Mirror Lens
find-price-button B+W Static ND Filter
Tip: At this distance static ND filters are best to retain sharpness

Also, sharpness and contrast are typically just mediocre with mirror lenses, but i'm very surprised at how much this new Rokinon 300mm mirror lens retains. They've done a great job creating a very compact MFT lens that still retains sharpness, detail, color, and contrast.

Another prominent tell-tale sign of a Mirror Lens is an odd donut-like effect (white rings) that show up on out-of-focus highlights. While lenses with an aperture blade are capable of producing perfectly round highlights, Mirror lenses will create a round donut-like out of focus highlight as seen in the image below.


For a stylized effect there are groups who find this aesthetically interesting, when used with portraits (see example photos here).

Due to it's fixed aperture of F/6.3 optimal conditions are preferred (lots of light), and keep in mind these lenses do not offer image stabilization. Still, maybe not so much of a problem as many of today's M43 cameras are starting to add Image Stabilization at the sensor level.

Mirror lenses have been around for years, and are available in focal lengths past 1600mm. The most expensive of which still falls under just $300 bucks. That's a pretty amazing price for the distance you get, but obviously you have to consider if those mirror-lens 'differences' work for you. Find a few options below.

cheesycam mirror lens review demo video sample Rokinonrokinon-300mmRokinon Mirror Lens Canon NikonRokinon mirror lens reviewRokinon Mirror Lenses for Canon Nikon M43 mFT
find-price-button Variety of Rokinon Mirror Lenses - via eBay

So now that you've checked out this video review, and some of the other mirror lens image samples (found here), what do you guys think about Rokinon's latest 300mm F/6.3 Mirror Lens for Micro Four Thirds? Leave your comments below.

8 thoughts on “Rokinon 300mm Mirror Lens Review for Micro Four Thirds HD Video Samples

  1. Dezso Nagy

    Hi dear.
    Only one question.
    How much is:

    300mm F6.3 Super Telephoto Mirror Lens for Panasonic Lumix DMC

  2. Jeff

    Strange to compare the 300mm Rok to a 100mm max fast aperture zoom... It's not like the 100-300mm panasonic and 75-300mm olympus don't exist.

  3. Emm

    Post author

    @Mon Juan - Yes it's pretty easy to focus, especially now with the new GH4 that has focus peaking.

  4. Nilserik

    I'm not sure you meant to write zoom here?

    " If you’re looking for that long zoom on a budget, this new mirror lens from Rokinon is a great option, "

    As for the lens, budget lenses are always interesting in my book. So far I have avoided the mirror lenses because of the drawbacks you mention. Maybe it is time to try one.

  5. Matt

    Pretty nice quality and price. Not a fan of the mini donut highlights though. Mmmm, mini donuts....

    Too distracting for my taste.

Comments are closed.