These two butterfly sitting back to back in front of my office window on tree branch. Tried to capture with few settings. After selecting one among few, I crop this image and worked on Curve and increased saturation to get bright Color of Butterfly.
Camera : Canon EOS 550D, ; f-stop - f/5.6 ; exposure : 1/160 sec. ; ISO - 400 ; focal length - 250 mm, Flash : on ; exposure : aperture priority