Originally posted by PDL To LensBeginner, please show us a set of images, with flash and without, of the same object. I bet you will not see significant differences.
Uh... that comment I cannot understand.
Of course there will be a difference, how much difference there is, it depends on the distance.
I've been able to make some photos in a very dark pub with the help of a small white cardboard piece in front of the pop-up. Most of the light is bounced (ceiling, walls), but you can see catchlights, so some is also straight.
I can't post those, though, since they are portraits (Italian law is different from American law).
I've also done lots of macro with my old K100D using a homemade cardboard ringflash adapter (cardboard and tin foil).
To post a set of images with and without flash would probably entail shooting it on purpose. I will try to do that when I get the chance.
My point is, even if you don't use the pop-up to control an external flash, you can use it creatively.