bajadreamer wrote:
This is the I version of this lens. The lens, new to me, works great with one exception; neither my 7dii nor my 5div recognize f4/0. Both cameras will only show f/5.6 as the widest aperture. The lens autofocuses great, the images are wonderful, but f/4.0 will not show up. When I put a 1.4x extender on both cameras show f/8.0.
Is there a secret here? I am in Costa Rica and could really use the extra stop of light at times.