Could Sony add a liquid crystal circular polarising layer to the mirror?

Started Oct 9, 2012 | Discussions thread
Luebke
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Re: Could Sony add a liquid crystal circular polarising layer to the mirror?
In reply to Frenske, Oct 9, 2012

I think coating the mirror with liquid crystals is not possible yet and I'm not sure if it will be possible in the next years.

Those optical devices are quite thick compared to the mirror and that would cause some problems (e.g. chromatic aberrations). Besides this it would be extremely expensive compared to other components inside such a camera.

Using a normal polarizer plate which has to be turned would be much cheaper and might be of better optical quality. And you could move it out of the beam (some compact cameras have ND filters that can be hinged out of the beam). But I do not see how the usability would be better than a filter screwed onto the lens and operated manually. An algorithm which would control the orientation of the crystals and optimizes the output is not trivial.

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