anyone know how to use the AWB for A550? the custom M1, M2. G1, G2 filter, any website that I can read about M1, M2?
Common
Kelvin White Balance Settings :
2500K - very strong orange tungsten light
2800K - strong orange tungsten light
3200K - yellowish tungsten light
4500K M6 - flourescent light (most flourescent tubes are green even though our eyes don't see it)
5500K - flash
6500K - daylight (or daylight-balanced flourescent light)
9900K - strong blue stage lighting or evening light
Xenon lighting is rare but that should be between 7000-9000K.
Whenever you enter a new situation that has different WB, just set your Kelvin WB again and test with one shot. You should be able to do this with practice.
With the Sony A300 and A350, you can use Live View and see the effect of changing Kelvin WB... live!
M = Magenta
G = Green
2500K = Blue
9900K = Amber
Take a picture. Supposing the picture is very Green, you need to add the opposite which is Magenta. If the picture is too Blue you need to go closer to Amber. So if the picture is very blue-green-ish, you will need to go closer to 9900K M9.