So I have MfT black magic 2.5k and sigma 18-35 on the way with speedboster made for BMC now I just found out I can't control aperture on my sigma with dumb adapter. Since BM don't have those control contact point where lens is attached how is aperture controlled by camera then ?Even though camera has iris and focus button at back the speedboster for my camera has those contact point at back
OTHER: I am banging me head Sigma lens
- Thread starter Enko
- Start date
DustinSchmidt
Well-known member
I did a quick google search on your topic and it looks like this was a common question in the Blackmagic forums back with the Blackmagic 2.5k camera was widely being used.
forum.blackmagicdesign.com
You may have more luck digging through the Blackmagic forum on this topic, but it's possible some people here have knowledge as well.
Blackmagic Forum • View topic - asking about the aperture in BMCC 2.5K ???
You may have more luck digging through the Blackmagic forum on this topic, but it's possible some people here have knowledge as well.
Zachadoodle
Well-known member
I've heard about the problems of limitations on cameras all the time on websites. Camera companies need to actively listen to people who have a problem with their cameras.
NorBro
Major Contributor
Just wondering, what do you mean the BM MFT lens mount doesn't have contact points?
[It was a little messy back then; some adapters didn't work, some were updated to work later, Metabones released a few different ones over the years, etc.]
Imamacuser
Veteran
Get the Nikon mount Sigma and Metabones, that version of the adapter has a manual aperture ring.
Hi so black magic MFT 2.5k does not have electronic contact points where ef version does to be able to controls the irs of the lens