Nikon Coolpix 8700 Digital Camera "white spot filming lens" Questions

...white wedding dress, the autofocus tends to go 'nuts.' You could pick a spot (a pew) to focus on and then turn AF off: during the walk-down-the-asle, just shoot when the person hits that spot. In a ...

spot metering. Now the logic behind the scenes and the procedure: 1) Camera sets Av/Tv to produce MID-GRAY exposure (is it 18% or something else is irrelevant here, one will need to "feel" what camera