"D7000/SB700 in TTL and AF point selection" Sun 29-Jan-12 02:34 AM by Vlad_IT
New Tampa, US
Good evening all.
Just going through my stuff and testing everything for tomorrow’s Birthday party (kids, kids, everywhere kids). I’m doing this for my practice only and it will be OK if I’ll mess it up a bit, but I want it to be as good as possible for my first “party” with D7000…. And I suddenly realize I’m not fully understand how it will work “behind the scene”, I mean what I’m trying to achieve. I’ll be shooting in manual mode to get ambient light to where I want it to be and SB-700 with dome pointed up in TTL mode for main subject exposure (with color filter, if required). So far i understand what I'll be doing. I’ll have a stroboframe flash bracket with me, but most of the time I anticipate I’ll be using landscape mode for taking pictures of several kids at the same time. To get flash to TTL I’ll be switching metering to spot. I was going to use center AF point and recompose, but… here I realize it might be a wrong approach.
Usually, in matrix metering mode, I focus in AF-S on someone’s face/eyes,half press shutter release and then I recompose. But I’m not sure how D7000/SB-700 metering works in TTL. Will it get measurements from “matrix” metering or flash in TTL mode will use “spot” metering information? What happen if after recomposing “that” spot will be pointed to very dark or very reflective surface? The main subject will be over/underexposed? Can you please explain to me how does metering works in TTL (not TTL-BL) mode. And how it usually handled by others in such events as kid’s parties?
My visualization of the process is either to use FV function, which most likely will be impractical with kids or to switch to 39 points and first compose, and then choose the right focus point manually before taking a picture…