^ Wow.
Had a ton of practice with OCF tonight at home before I went to the club - thought I had it nailed, then when I got in there just fell to bits and finished up reverting to my usual way. Again, every shot was just totally unpredictable - whether it be ETTL or manual settings as Jason suggested. Worked perfectly at home with every shot being really nicely exposed (ETTL + manual) with lovely colour, but in the club shots were just randomly under/over exposed each time. I put a 1/4 CTO warming gel on too but this gave the subjects a really unnatural orange tint! (But again, when used at home was fine. Hmmm.) I will nail this one day. Do you reckon it has anything to do with me using the 60D's built in wireless transmitter? Or is my metering going wrong somewhere when using ETTL? I need to get more practise, but always feel the pressure to revert when 2 consecutive shots are fudged up and people are asking to see their photos!
"Uhhhmmmm, wait, just one more..." - Nothing worse!
Also, seriously thinking about selling the Tamron 10-24mm and buying the 17-50mm 2.8 instead. What do you reckon?