Hi Hugo
The Red Admiral shot was taken on my wifes compact canon (handbag size) - Im not sure of the model. If you inspect the pic very close up it is slightly blurred because it had to be set up fast as the butterfly wouldnt stay still for longer than a few secs.
I use a Canon Powershot 620. (bit old hat now)
Very sharp images, even on auto, but also has most of the functions of most professional cameras.
I am very impressed with the Canon cameras (colour & sharpness) & have taken many fantastic wildlife shots on mine, - Shame the zoom isnt better, but cant really expect more from a compact. :-)
Rob