How to make aperture of detached Emount lens stay fully open.

Started Mar 15, 2012 | Discussions thread
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forsakenbliss
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How to make aperture of detached Emount lens stay fully open.
Mar 15, 2012

Anyone know of any way to make the Aperture of E mount lens stays wide open when detached from camera?

1 Intend to use the standard lens in filter thread mount to SEL 18-200mm lens for macro.
2. Also help to check the condition of lens glass in future.

or anyone knows how NEX camera controls the opening of the aperture blades?

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Sony Alpha 7R
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