
Originally Posted by
dubaiphil
The first thing I would advise, especially if you don't know the venue, but even if you are familiar, is to try to do a recce. If possible with the interior lighting set up as it will be on the day.
You will then be able to assess the venue, your settings, WB (I'll explain why I bring that up later), focal lengths based on where you'll be shooting etc
Personally, I'd use AF-C, single point (in the middle or over the dean (or whatever the shaking hands man will be called)). Depending on the range and your f stop, you might well have sufficient DoF to ensure that the handshakee is equally in focus. That all depends on where you'll be standing and where the handshakers will be relative to you though. If you're far enough back you'll not have to worry so much about critical focusing. If you're there at f5.6 and 40mm then you'll have to be a bit more watchful.
I'm using my AF-On button for focus only, with the shutter 1/2 press not affecting focus at all. So if my focus point is over the hand shaker there's no hunting or incorrect focus point selection made by the camera when the shutter's pressed. If my focus point is over the approaching soon to be handshakee then holding the thumb down will maintain focus as I'm in AF-C. It takes a little while to get used to but can be very beneficial during events as you have two focus modes at your finger and thumb tips without changing settings or modes. You can focus, release thumb, recompose and shoot or use an off centre cross point, hold thumb down and track while maintaining focus. However, unless you've practised and got it off pat I wouldn't advice you do that straight away!
Now you are presumably doing this FOC, but what you should always consider is potential clients that you will be meeting and shooting. See if you can get some plain business cards printed up with your contact details.
And WB - why did I mention that (as I normally just shoot RAW and Auto WB)?
Well, a good idea if there is a reception or gathering after the ceremony would be to have a laptop out with your graduation hand shake photographs visible in a slideshow. It takes very little effort but will show your hobbyist yet professional quality credentials. Shooting RAW + jpg means you could switch out cards, showing your ceremonial jpgs as a slideshow while shooting your candids at the same time. Getting an accurate WB preset would be very useful if you'd consider this.
Oh, and you're SB-600 will be fine! Take extra batteries though...