July 8, 2016 at 12:19AM, Edited July 8, 12:24AM

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Lens mount.

I want to get a lens, specifically the Rokinon 24mm t 1.5 cine ds lens, but any lens applies. I have a gh4 which is micro 4/3, and luckily the Rokinon lens comes in many different mounts including micro 4/3. But the problem with that, is that it takes a full frame lens and permanently makes it micro 4/3, which is fine because I have a micro 4/3 camera, but If i ever upgrade to a full frame camera, there is no way to adapt it to anything bigger then micro 4/3. But If I get the Canon ef mount version, which is full frame, I can very cheaply adapt the lens to my gh4 because it is a fully Manuel lens, and that would only add 15 bucks to the cost and since there is no glass element in the adapter the quality should not change. And I could then Adapt the lens to any camera body cheaply. So my question is should I get the micro 4/3 version or get the canon ef version and adapt it? And is there any reason not to go the canon ef route?

10 Comments

If you're going to be upgrading in the future, plan for it with lenses and get an EF mount or something with metabones. The down side could be not full integration but from what I understand with my rokinon lens when I had it was that there were no electronic integration with the camera as far as control so I think the EF route is safe.

July 8, 2016 at 12:43AM

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Clark McCauley
Spaceman
2055

Thank you, but does it have to be a meta bones adapter or can it be a cheap fotodiox adapter with no electronics because the lens is fully Manuel?

Antone Axten

July 8, 2016 at 3:10AM

Never used the fotodiox but that's a good point! I say use the fotodiox, just check the reviews first. I've never heard of it so I don't know...

Clark McCauley

July 8, 2016 at 9:48AM

You need a Metabones adapter (or any focal reducer) to use the whole FF lens on M43. Otherwise the camera will use the middle of the lens; a 50mm becomes a 100mm, etc.

The Rokinon 24mm becomes a 48mm (as written on BH's writeup). It's still a FF lens, but has an m43 mount.

Using the Metabones:

Rokinon 24mm + Metabones = Rokinon 24mm, not exactly but that's the point. It's not double.

Sathya Vijayendran

July 10, 2016 at 2:56AM

I think this article would be very helpful to you. It's written by Duclos, and it's one of the best sources for optics.

https://thecinelens.com/2014/09/12/are-rokinon-primes-right-for-you/.

In looking at the chart, an E-Mount would give you the widest selection in the focal lengths available, including those that cover a Full-Frame sensor. Given the popularity of Sony cameras (A7s, A6300, FS5/7, etc), I don't think you'll have an issue finding adapters to adapt an E-Mount lens to almost any Mirrorless camera body. The only issue you'll run into if you want to use an E-Mount lens on a EF camera body. Here's an article explaining why:

https://www.reddit.com/r/videography/comments/3oindn/why_are_there_no_ad....

I generally am of the opinion that EF mount is going to be the most "future-proof" option since it'll work on all mirrorless cameras and native EF Mount cameras.

So really, i think it comes down to choice of focal length vs. future compatibility. If the focal lengths available in EF Mount are all you'll need then your covered now and in the future. If you desire a wider range of focal lengths, then E-Mount may be the way to go.

https://acinematographersjournal.wordpress.com

July 8, 2016 at 9:20AM, Edited July 8, 9:53AM

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John Dimalanta
Freelance Photographer/Cinematographer
470

I prefer to buy manual lenses in Nikon F or Nikon G mount which can be adapted to pretty much any other camera mount.

For electronic lenses I would go with the Canon EF mount which can be adapted to a wide variety of camera mounts, just keep in mind that electronic lens adapters can be quite expensive. ( sometimes double or triple what a manual Nikon F adapter would cost )

July 8, 2016 at 12:27PM

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Guy McLoughlin
Video Producer
30403

It depends.

If the Rokinon mft version focuses only over the mft sensor you will get a sharper lens, however if it is basically an EF Rokinon with a different mount you will definitely lose resolution. Probably the latter is true apart from the Panasonic, Olympus and Panasonic/Leica lenses not many lenses are specifically designed for the mft sensor.

July 8, 2016 at 5:14PM

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Cary Knoop
Member
2623

Why would i loose resolution if there is no glass element in the adapter?

Antone Axten

July 8, 2016 at 11:39PM

You asked: "Why would i loose resolution if there is no glass element in the adapter?"

Because a lens designed for full frame projects the full resolution over the size of a full frame circle instead of focusing all its resolution onto a micro four third frame circle.

A lens designed for a micro four third frame will project its full resolution completely onto the micro four third frame circle.

It is similar but less dramatic if you use a full frame lens on a crop frame sensor. You will be better off using lenses designed for crop frame.

July 9, 2016 at 12:58PM

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Cary Knoop
Member
2623

My main reason for using Nikon AI-S lenses with my GH4 camera is the softer image, which produces a nicer looking video image for me than sharper Micro 4/3 lenses from Panasonic or Olympus.

Guy McLoughlin

July 11, 2016 at 1:37PM

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