I just bought a old Minolta MD Zoom 35-135mm 1:3.5-4.5 lens together with two old Minolta SLRs to get into film photography.
Before using actual film I adapted it to my Canon 600D (using a no-name MD-EOS adapter) to play around with the lens. I quickly noticed a blue glare/flare in the center of the image. I then noticed that it is the opening of the aperture I see in the photos. See the example shots below were I opened the aperture from f32 downwards.
Why is the aperture showing up and can I prevent that?
Will this also show up when using the SLRs it was built for?