I have a Fotodiox Canon EF to GFX adapter that I want to use to test my Canon TSE lenses.
However, when I turn off my A7RII with the lenses set to maximum aperture on the Metabones IV adapter the lens aperture closes to minimum.
How do I get the lenses to keep the aperture open to maximum and/or a specific aperture setting?
Thanks.
I no longer have a Canon body to test to see if they will lock the aperture.
However, when I turn off my A7RII with the lenses set to maximum aperture on the Metabones IV adapter the lens aperture closes to minimum.
How do I get the lenses to keep the aperture open to maximum and/or a specific aperture setting?
Thanks.
I no longer have a Canon body to test to see if they will lock the aperture.