У вашего броузера проблема в совместимости с HTML5
This Adapter for 2/3" B4 Lens to Micro Four Thirds Camera meant to connect 2/3" B4 mount lenses onto a Micro Four Thirds camera.
Depending on the focal length of your lens, some vignetting may appear in images.
I'm using Lumix GH 2 camera with the BCTV zoom lens in this tutorial. B4 adapter can be found on ebay or amazon.
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