Metabones wide open button??

Started Dec 7, 2013 | Discussions thread
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ZzzooM3
ZzzooM3 Regular Member • Posts: 270
Re: Metabones wide open button??

love_them_all wrote:

I just got the Metabones EF-E MkIII adaptor. It works great on the A7R. But does anybody know what is and how to use that "wide open button" on the adaptor?

On the website it says it's opposite to a dof preview button. But isn't the lens is always wide open anyway? Is it for movie mode (I need to play with that to see)?

No, the lens is definitely NOT wide-open all the time. You spent a lot of money for a lens adapter that has electronic integration with your a7. You set the aperture and shutter speed just as you do for any Sony E-mount lens. The wide open button temporarily opens the shutter so you can focus manually better. AF also works but it is slower than with an E-mount lens. Check their website for a list of compatible lenses.

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