When i shoot with my Canon 50L on my 5d II i've noticed a change in shape in the bokeh bubble as soon as the "bubble" goes off center.
The strange thing is that i don't have this "problem" with my Canon 50mm F1.8 ?
It's getting worse when i open up the aperture.
Made a small clip with my 5d, watch the edge of the "bokeh bubble" when it gets to the edge of the frame!
I was just wondering if this is "normal" with the 50L on FF ?
What causes this effect?
Who can test this on his own cam?
I've used some christmas lights about 2 feet away from the cam.