thru experience and anticipation one shot one kill
Anticipate and let your 9fps shutter flip
Sometime Lucky I get it
I cannot get it at all
u need to get urself into the mood also
I am NOT a PROfessional photographer and photography is NOT my hobby
joke around, and when they start to laugh, burst like 3 to 5 shots. probably 1 will be good enough.
but then, thats me. =)
Learning not looking through the viewfinder while engaging in happy/funny conversation with subject.
knowing the subjects help a lot, of course hehe
But can't get any better for me than this
If you're anywhere a decent portraiture photographer, you'd know to make them smile. Everyone has got different approaches, but I tend to make my subjects very comfortable with me before I "suddenly" attempt smile shots.
When they get hit with an unexpected joke/funny thing, they'll laugh. You'll only need 1 shot if you've prepared everything (including background/focus, etc) before you let loose your "joke".
Of course, that's provided you're comfortable and you actually know your equipment. the shutter lag, the focus lag, the shutter speed (relative to how fast the subject might move when laughing), the acceptable focus/dof (to compensate for possible unexpected movement)...
If 1 shot is not enough, just repeat, coz it means skill not good. need to practice more.
from experience, (not photographer but being a model for my wedding a few years back), it is high fps.
My photographer is a very established wedding photog and even he uses continuous shooting to capture the moment. I think it is impossible to capture reliably the fleeting moment with single shot. I mean if you have high fps why not use it?
Normally the perfect smile is a smile when the subject least expected it. When the subject is not smiling for a pose.