Look at this, from yesterday’s pic:
The Canon 7D can direct other flashes with its popup – unique for Canon, and that is what I was doing in this portrait (the main flash is a 430EX with a Honl reflector).
But when you do this, even when you turn the popup flash off (it only commands the other flashes), there’s a tiny residual glow! Every time. That is the little white dot.
Tip: cover it with your hand when shooting (or use Photoshop).
I’ve never tried the 7d as master flash yet. Still waiting for right time to purchase. Thank you for the advance knowledge. Does the residual flash affect the photo in any way?
Well – it shows the little white hot spot. You can easily take that out with Photoshop or Lightroom, bur you have to do it.