Shot my last Football game with two bodies/setup.
First body ID Mk III with the Sigma 120-300 2.8 OS and with the typical flash setup (mounted below on mono-pod). Settings were F/5, SS of 1/300 and ISO 1250.
Second Body, 1D Mk IV shot using only ambient lighting, Canon 400mm 2.8. Settings around f/2.8, SS of 1/500 and ISO 6400
The Mark IV is great at high ISO, but the tones of flash is...well...unbeatable.
First some flashed:
Then ambient:
The shot below was only ISO 4000:
Not in love shooting flashed...but I've shot it all year and forgot about how much better the results were until editing these. Just thought I'd post.