Jitter when yawing

[mark_t]

... unless you're an absolute top notch pixel peeper, there is no discernible benefit to not using auto WB. I realise that's not common wisdom among the pro's but seriously, there's no real difference.

The most obvious and very discernable difference that you don't need to be a pro to see, is that when you don't use auto white-balance it stays where you put it, instead of changing as it sees fit...