I've been out today with the camera and decided to have another play with this function..
The sun was too strong to take a good exposure from the angle I was trying to shoot at, so as soon as I'd finished, I lifted the camera up and took a shot of the sky, correctly exposing it.
I then changed the sky in my original shot in photoshop.
I don't know how I feel about this really. The sky was real, both photos were taken at the same location. I took both photos and used them to create one..
It doesn't appear to have done an especially good job of swapping the sky though. You can see where photoshop has cut the sky out and pasted the new one in if you look carefully.
It would always be my preference to get everything in one shot, but what do you think, if you physically can't get the shot you want from the angle you're at. Would you consider it acceptable to take your shot, then take another of the sky afterwards to get it exposed correctly?
Autumnal colours at Craig Goch Dam, Wales... by
Philip Davies, on Flickr