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03-17-2012, 04:49 AM   #1
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Domenico's Avatar

Join Date: Aug 2010
Location: Turin
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Sony E-mount to Pentax K-mount adapter

Hello guys,

my girfriend is going to buy a sony Nex video camera (Nex vg20) and she'd like to use my Pentax lenses.

I figured out Novoflex produces an adpter equipped with a stepless f-stop control ring.

Anyone has experience with this adapter? How does it work? Are there any important limitations? I don't even think about autofocus of course...


03-17-2012, 08:13 AM   #2
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bimjo's Avatar

Join Date: Jan 2008
Location: Pasco, WA
Posts: 967
I don't know about the Novoflex, but the Rainbow Imaging adaptor I have isn't stepless- it has 5 steps for aperture control. While not ideal, it's better than shooting wide open all the time. If the Novoflex is indeed stepless that would be great.

Regardless of which adaptor you get you'll never know for sure what aperture you're at, though you can make some educated guesses. No focal length/aperture data in exif with any adaptor K to e mount. AFAIK the two Sony adaptors are the only ones that pass all info to the camera, but obviously only work with Sony A mount lenses.

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