Aperture adjustment when needed...

[etegration]

with the lens ring meant for the R10 "installed" on the sigma/samyang 8mm, adjustment of the aperture seems blocked? i leave the lens ring on my lenses on all the time even though i may not be doing panography.

Any solution?

[badders]

F/8. set it and forget it.

[hindenhaag]

With Sigma A can be changed with the camera.

I use fixed lens ring on all my fisheye lenses without any problem.

Heinz