I just got a canon 5d3 and while mf-adjusting all of my lenses to the body, I found that the af points get limited to just the center vertical cluster while my sigma 105 macro is mounted. This only occurs when i have the Cross-type af only selected in the menu on this lens. My ef 24-70, 70-200 2.8is, and 85 1.8 all work normally. When returning to all 61 selectable points or if i select a cluster of points they all show up again.
Any one have an idea of why this is occurring?
Thanks

