What is the best way to deal with photographing a very low lit event(i.e. candlelight)? I use Canon. Is the only help to use the ONE SHOT mode with my 580EX11 flash? My camera could not find focus even on contrasting areas, at a low lit event recently
There are a few ways to tackle this. You first have to decide if you want to go natural light or not. If it's something like a party and no one cares that you use flash, by all means, use it. I'd recommend bouncing the flash and using a CTO (tungsten) gel to match the warmth of the candle light. Also, make sure you keep the flash level low (maybe -2 EV) to keep as much of the natural candle environment as possible.
If it's something like a wedding ceremony where flash should never be used, you're just going to have to use fast lenses and maybe higher ISOs. If you're having focus problems, try focusing on something else that's the same distance that has more contrast. That means looking for zippers, the area where the neck meets the shirt, or where the tux jacket meets the shirt. Camera autofocus does best when it can find detail to lock on to.
If it's something like a wedding ceremony where flash should never be used, you're just going to have to use fast lenses and maybe higher ISOs. If you're having focus problems, try focusing on something else that's the same distance that has more contrast. That means looking for zippers, the area where the neck meets the shirt, or where the tux jacket meets the shirt. Camera autofocus does best when it can find detail to lock on to.