Weird lens reviews: Samyang 800mm f/8 Mirror, & 2x telecoverter (with samples)

Mirror lenses are so crazy! Can they be a serious option for a photographer looking to do telephoto work of acceptable quality? Are they fun, or just a fiddly nightmare? Take a look.

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All shots and footage taken on Canon 60D and 6D cameras.

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Music: Kevin Macleod, ‘Opportunity Walks’ (


Lofote says:

03:05: “mirror lenses are manual focus only.” Seems like you never heard about the Minolta or Sony A-mount 500 F8 😀 Yes, that is AF.

N Dawkins says:

Has anyone use this on a camera with good in-body stabilisation, like an Olympus or recent Panasonic? What can of shutter speeds could you get down to, if so?

Ruwindu Gunatilake says:

I’m wondering. Will this lens be good for astrophotography?

Chris Thomas says:


it's 6884 says:

Cassius Clay called from Heavens, he says he wants his lens back

Kristian says:

Anybody know where I can get a 400mm lens under $200? And what lens?

Route1Reels says:

Those poor poor doughnut bokehs.

Jonathan Alvarsson says:

I took this picture with one of those:
Hard to work with but very fun! 🙂

EposVox says:

Nice 🙂

Clacking Computer says:

holy shit i want one just for those donut lights in the bokeh, that’s gorgeous

Pik Pikkabbu says:

If you mount a 800mm lens on an APS-C’s camera, you still have 800mm of focal, but cropped.
Nothing like a 1200mm focal lens.
Mount it on a full frame sensor cámera, and then crop the image and amplify it, you’ll just have the same as yout APS-C mount.

Achilleas Labrou says:

Sony until quite recently was producing the only autofocus reflex lens in the world for its a-mount cameras. It was the autofocus SAL500F80 500mm f/8 reflex, an update of the autofocus Minolta AF 500mm f/8 reflex camera. Both lenses should work perfectly with the a-mount to e-mount LA-EA4 adapter with translucent mirror on e-mount bodies. At eBay these lenses cost around 400-600 depending on quality

Michael T Shue Studios says:

Yeah, this is basically a 800mm (~3 inch) Schmidt Cassegrain Telescope with a camera mount. Needs a very stable base to keep it still.

GothicKittyMadness says:

It’s funny how he says bokeh!

Jesse H says:

F8 is not slow for 800.

Simon Goddard says:

Does this lens allow for a front filter and if so is it 105mm?

Gjoko Zajkov says:

Anyone tried this with Pentax ? they have in body IS.

William Butcher says:

What is even worse than round bokeh, reuglar hexagon shape bokeh, no curves in the shape too just a straight sided 6 blade apature ting

MrAdrianSW says:

Managed to get a similar 500mm Mirror lens (Opteka).  With the x2 converter. $80
Tones of fun, and way easier to handle than its long nosed cousin the 500mm Telephoto.  My only quibble with it is Focus…  Its a real bas**rd to get focused some times… especially when you have the x2 adapter on it.

Neil Williams says:

I just happened to click on your clip as the lens looked like my old Sigma 600mm mirror and was amazed to see that you filmed some of it from the bridge over the A48 by the university just 2 mins walk from my home! It was nice to see Castell Coch and the Whitchurch Hospital tower too 🙂 . Are you local to the area? Neil.

molan says:

It’s so soft, a Nikon P900 would be a better deal than using this on any dSLR/mirroless.

michel guidi says:

seul bemol !!! imperatif !!! prise de vue !!! avec trepied!!! sinon bel conception materiel !! robuste !!! a +

Michael Marr says:

Piffs! It is not weird lens! That type of lens have been been here for long time. That is called reflex lens or AKA Catadioptric system.

Luca J says:

This would be great for when that Milf down the road leaves her bedroom curtains open… I mean… photographing the moon…

Alexander Wekell says:


mannydeguzmanjartist says:

Provided this lens has aperture blades and f stops. Just use f11 to f14 aperture and the photos will be reasonably sharp. f8 lenses are natrually soft wide open. But my TOU Five Star 500mm f8 Prime Preset lens on Nikon D90 could get reasonable birds shots straight out of camera, but rather comparable to bridge digicam superzooms with built in AF lenses.

krymvm says:

perfect for stalking HHHHE

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