LA-EA1 adapter design flaw.

Sony LA-EA1 official A/E mount adapter has a huge design flaw ruining bokeh quality with fast lenses (faster than f/2).

The adapter has a chamber which is really smaller than Sony reflex ones, and it prevent portions of light to get to the sensor. It's very easy to spot on defocused lights, and really disturbing for bokeh fans (who I believe are the users of 50/1.4, 85/1.4, 135/1.8 lenses).

Here are some examples where it shows, one of them is a realistic portrait, the others are pure tests with those lenses :
-Samyang 85/1.4
-Sony 50/1.4
-Sony 135/1.8

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I also tested Zeiss 85/1.4 which shows the same problem, and Zeiss 24/2, wich shows it too, but it's a lot less noticeable (bokeh disks are smaller, and it only appear at the extreme border of the frame).

I doesn't occur at all when lenses are stopped down to f/2.8 and smaller or with any 2.8 or slower lens.

I showed it to Sony staff member in French "Salon de la photo" yesterday, they told me they were not aware of this issue.

Some other LA-EA1 user confirmed this with other fast lenses, both in photographs and videos. Try it yourself if you have one.

The cause is the narrow chamber which obstructs light, don't bother to search for something else.

I myself wonder if I won't ask for a reimbursement, I bought this adapter for the sole purpose of using super-fast alpha lenses on my Nex, I'm extremely disappointed...