What features are lost when using Voigtländer manual lenses?

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CydeWeys New Member • Posts: 7
What features are lost when using Voigtländer manual lenses?

So apparently Voigtländer makes a trio of really nice wide-open f/0.95 prime lenses for M4/3.  From what I understand of them, though, they're completely manual, to the point of not even having electrical contacts.  I'm fine with having to focus manually, and having an aperture ring is kind of cool, but I'm worried that many of the features of my E-M5 II won't work.

Do these lenses record EXIF data correctly?  Focal length, aperture, etc.?  Or is that all a big blank?  Also, I have my camera set up to automatically launch magnification/peaking when I manually adjust focus with my current lenses; will that even work with a purely manual lens, or will I have to manually launch those modes as well?  And how does metering and various camera modes work given that the camera cannot control the aperture?

Olympus E-M5 II Voigtlander Nokton 42.5mm F0.95
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