FS7: Rokinon E Mount Adapter

thorn

thorn

Active member
So I'm planning on pulling the trigger on a set of Rokinon Cine primes in the next week or so. I've decided to go with Canon versions instead of E-mount, and have a quick question or two.

1) I'm looking at this Fotodiox adapter . As the Rokinons are completely manual, is there any reason to spend another $300+ on the MetaBones EF adapter (not speedbooster), other than more future EF compatibility? Again, for the moment - I'm only worried about these specific lenses.

2) I believe the answer is "yes", but want to double-check: is the resulting image (crop, FOV, actual recorded image) identical with these lenses whether I purchase EF or E mount versions? (I've been using a GH2, and am so completely tired of having to calculate "relative FOV / Zoom" numbers.)

Thanks :)

thorn
 
The one you linked to is for micro 4/3 mount. You need e mt. Don't get one with a manual iris adjustment . Aside from that the answer is yes it won't change the lens image at all. There are a few knock off speed boosters though, stay away from those also.
 
For an optical adapter, I'd definitely pay the $$ for a Metabones... but for a straight non-electronic/non-optical/pass-through, just wanting something of quality less than $100.
 
I'm don't know that Metabones have cornered the market in decent optics in adapters. I think they've just cornered the market in marketing expensive adapters and suggesting anything else is inferior.


I have absolutely nothing to base that assumption on though :)

Although my problematic electronic £80 EF to E Mount adapter is no more problematic than the Metabones equivalent.
 
Good for you.

I've tested a Zonghyi lens turbo against the speedbooster.

The difference in clearly visible. This kind of optical adapter was developed by Brian Caldwell
for Metabones exclusively and copied from others thereafter. The lens turbo had problems with
edge sharpness and introduced a blue spot in the middle of your frame. This came from the
different glss/coatings used in the optics.

If you think like this, buy a Kinefinety KinaMAX 6k instead of a RED Scarlet-X and you can
safe a lot of money...

I use the speedbooster since it exists with great effort and no problems. If there's a problem
you send it to Hong-Kong and it's firmware can be upgraded for free.
I also have one of the smart adapters as well. But here you can also try something cheaper
if you want. But as many people use the metabones stuff without problems, it's what we
can recommend on the first place.

If you wanna safe some bucks - try the cheaper copies and make your own experience...
 
Focal reducers have been in existence long before Metabones were on the scene, coming from the telescope world. But regardless I'm not saying there is anything wrong with Metabones other than the price. As for 'using them without problems' there are tons of posts of people having issues with metabones adapters on here. My point, which I should have made better, was that my cheaper electronic adapter had the same amount of issues no more no less, for one 5th the price, and so there is every chance someone out there is making a good quality focal reducer for e mount but not charging over £500 for it.
 
The thing is: I use both adapters since a long time now and never had problems coming from the adapter.
I shot projects without ever removing the adapter.

All the Metabones adapters have two different modes:
- green mode
- advanced mode

Only advanced mode is good for video. Once you know how to always use advanced mode most of your
issues will be gone.

I even updated one of my old Mark II Smart adapters sothat it has advanced mode always on.
I'm making money with these adapters and therefore choose the one's who propably work at least
as good as any other.
 
Fair enough. I have no problem with that at all and I'm sure they are great and I can totally see why having a solution that just works for you is worth the money.

I just currently use a $10 dumb ef mount to e mount for my manual lenses on my A7s and haven't had a single problem and I get annoyed at the thought of having to spend nearly 80x that for some added glass when I don't care about the electronics side. :)

It's the same complaint I would do every time I would buy a new short little EVF/Monitor cable from Red for the Epic/Scarlet and it would cost €200+
 
+1

I use a 10$ dumb adapter for all my manual glass (Canon FD) too.
No problems here.

Totally different as it doesn't have to support electronic iris control,
image stabilization and focus distance display. No internal optics
either.

With the speedbooster I was able to tune the Canon 24-105/4 to parfocal.
The focus distance is displayed, the iris can be controlled from the handgrip
of my FS100. This was a huge help when working handheld with this camera!
 
So the answer is a good value optically great speedbooster with no electronics for a good price. Metabones, sort this out soon please :)
 
Erik Wittbusch said:
Good for you.

I've tested a Zonghyi lens turbo against the speedbooster.

The difference in clearly visible. This kind of optical adapter was developed by Brian Caldwell
for Metabones exclusively and copied from others thereafter. The lens turbo had problems with
edge sharpness and introduced a blue spot in the middle of your frame. This came from the
different glss/coatings used in the optics.

If you think like this, buy a Kinefinety KinaMAX 6k instead of a RED Scarlet
Here you go. It actually preformed quite well considering what it cost. It has it's issues but still does what I need it to do and with the money I saved I was able to pick up other equipment that I still need.

Your test is old and not accurate of what's currently available the Mitakon Turbo II is clearly much better now I own one.
Recent test below.

http://www.verybiglobo.com/metabones...on-ef-501-2-l/


http://www.youtube.com/watch?v=MH-Fg-uH6XI
Click to expand...
 
Just on the subject of the Lens Turbo 2, why do they say on their site and on the ebay adverts that it is not suitable for some NEX camcorders?
 
Good question I noted that before I bought mine, but after the reviews I bought it anyway and used it on my FS100
works just fine. I bought the Nikon to Sony e mount and then put Nikon mounts on my Leica glass and have no problems.
Also, I have not got the blue spot these adapters use to be plagued with image is much sharper even at the edges.
 
You must log in or register to reply here.
Back
Top