Because Blackmagic Cinema Camera EF adjust iris automatically, you can`t be sure how much DOF your getting..
So, any solution? and i have a question, ROKINON and SAMYANG CINE LENSES have a manual Iris control, so i would like to know if you can adjust DOF manually whit this lenses on your BMC? I Hope you can help and give me some Tips to control DOF.. Thanks :D
It's only automatic IF you hit the Iris button. Every time you mount a lens, it defaults to wide open. From there, you can close/open the aperture by hitting the FF and REW buttons by 1/3rd stops. And yes, you can also use manual aperture lenses to manually control aperture... both methods work fine to give you the DOF you need.