Full Frame NEX-?

El Matadurr wrote:

When (not if, hehe) the NEX-9 comes--whether in December or early 2014--all current e-mount lenses will function as APS-C lenses. The same thing happens when you mount e-mount lenses to the full-frame VG-900. There's been some mixed rumors as to whether or not some/all of the Zeiss primes will cover the full-frame image circle, so that'll have to wait and see.

A reverse adapter by Sony or otherwise to turn an aps-c lens into being a capable FF lens would be both impractical and improbable. Metabones did something opposite/similar with their speedbooster, but it is designed for reducing the focal length of full-frame lenses. Increasing the focal length of aps-c lenses will reduce aperture speed and lead to poorer quality (ala a teleconverter). This isn't even taking into account that the flange distance between rear element to sensor doesn't allow for any room for more elements in an adapter.

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