I haven't been posting any of my R/C lately but we finally had an event which always draws lots of warbirds. I have been testing the Sigma 150-500 C this season & this would be the event where it could be a winner or looser for my primary needs in a long lens. To say the least it surpassed my highest hopes considering it's price. All of these are from a 1D4 & Sigma 150-600 C at 1/500 sec.


