The black Rokinon 300mm f/6.3 ED UMC CS Lens for Fujifilmis a mirror lens designed specifically for use on Fujifilm X mount mirrorless cameras. The lens' Cassegrain design enables it to achieve a 450mm 35mm-equivalent focal length perspective within a compact and lightweight lens design 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 2.95'.

One extra-low dispersion element and the inherent mirror construction of the lens work to eliminate chromatic aberrations while providing notable image sharpness and clarity. Furthermore, the UMC (Ultra Multi Coated) coating has been applied to reduce surface reflections, lens flare, and ghosting while also contributing to improved overall contrast.

Fujifilm X Mount/APS-C Format    450mm (35mm Equivalent)    Fixed f/6.3 Aperture    Catadioptric Telephoto Lens    UMC Multi-Layer Anti-Reflective Coating    One Extra-Low Dispersion Glass Element    Manual Focusing as Close as 2.95'

Mirror lens designed specifically for Fujifilm X mount mirrorless 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.

One extra-low dispersion element and a UMC coating are integrated into the lens construction to improve sharpness and clarity as well as enhance the overall image contrast.

Related Questions and Answers

Q: 1. Will this work with an extender such as my KENKO C-AF1 1.5X DG?

A: 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

Q: 2. Does this lens have internal focus? i.e. Does it change shape, or do the filter threads move or rotate while zooming in and out? Or is it a more or less sealed unit? Not referring to weather sealing, because their is no mention of it in the description.

A: Hi Joseph, Focusing is internal. No change in shape when focusing. Filter threads do not move when focusing. Polarizing filter will stay in position, when you focus. Resolution on my 24MP Nikon d7100 in raw is outstanding, especially f5.6 - f8 range. Absolutely razor sharp. I don't believe it to be weather sealed, but the build quality is pretty good. Lens hood is a nice design, but isn't the tightest fit. It usually stays on OK, but it's a bit looser fit than most hoods. Overall, this is a very nice manual focus lens. George

Q: 3. Is this lens compatible with a LUMIX g85?

A: The manual focus Rokinon Reflex 300mm f/6.3 ED UMC CS Lens for Micro Four Thirds Mount (Black) is compatible with the Panasonic Lumix G85 Mirrorless Camera.

Q: 4. Are there front filter threads , and if so so what size are they? Images appear to show threading, but it could be non-standard filter threads.

A: Yes you are correct, those are front filter threads. The front thread diameter is a standard 58mm size, so any lens caps or filters made for 58mm diameters will be compatible.

Q: 5. Is this lenses all manual (focus and iris)? Can it be used with BlackMagic 2.5k mount MFT?

A: 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.

Q: 6. Hello - Will this lens fit a Fujifilm X-M1 ?

A: Yes. As long as you buy the Fuji version.

Q: 7. 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?

A: 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.

Q: 8. Has anyone tried this with a d3400? It tells me it's an incompatible lens but everything I've read suggests it should be fine??

A: Thank you for the replies. When I connect the lens I get an info message on my live view that says incompatible lens and it won't do anything at all in A,S or P mode. It will take a photo in M mode only. Samyang says it should work in A S and P once I've told the camera I'm using a manual lens but I'm lost how to do that!

Q: 9. I am really newbie to photography , just to confirm , this lens fits right to sony A6000 ?

A: Yes this will fit a Sony A6000.

Q: 10. Will this lens work with the Panasonic Lumix DMC-GH4?

A: Yes, this lens great for GH3,4 use M 3/4 lens mount !