color cast and inconsistent exposure

[geraldkhoo]

expo disc is a more expensive option, but you get the WB right all the time....
it is also very easy to use....again, cost is the issue...
can't remember how much i paid for it, but one hudred plus or so...

I paid $150 for the expodisc 2nd hand... but you can try doing a DIY one which gives pretty good results...

http://www.clubsnap.com/forums/showthread.php?t=346975