Metabones adapter - flare control

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davidwinters

Active member
Background, I bought two adapters, which arrived on 3/12/12. Today is my second day of tests and tomorrow will be my first shoot day. I'm selling one, as we had planned to build up two FS100 bodies, but now only one. There were some "ghosting" inquires on my "for sale" post and I think this test is most useful to the entire FS100 community, so posting here.

The test... shot adapter comparisons with a light in the background, entering and existing frame, to observe any possible internal flare issues. Result... yes there is a flare issue specific to this adapter vs my generic "dumb" mount and PL adapter. However, the flare issue can be resolved with a mattebox, or "flagging" as needed.

I consider this a design tradeoff vs some type of overlooked manufacture error. The internal port of the adapter is smaller to accommodate the "smart" electronics and many EF lenses cover full frame. Any bright light source, just out of (sensor) frame, will bounce all over the adapter internals. I ran into this on a music video in the 90's, shooting 16mm with old 35mm primes. There is a similar thing going on with the Epic, google "epic flaregate."

Anyhow, I don't think it's a big deal... just another thing to keep in the mental checklist when shooting.

 
I have the updated version, and it is prone to flare, though probably less so than the first version. The "tube" that the light passes through is rectangular and very narrow, so if a light beam hits one face at the wrong angle it will reflect causing flare. It looks like not much can be done to avoid this, but of course you can see flare on the LCD/viewfinder so at least it won't be a surprise.
 
How good is the anti-reflection fabric? I see there are a lot of materials you can get to block reflections as I was searching around, I wonder if a better material will solve this. Given I am buying one of these adapters, I will be able to look for a solution.
 
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