You are right, less DOF would isolate the subject better in front a that busy BG. However, the use of a cheap 2X Vivitar converter (I paid that $50 years ago) doesn't really perform well at f/4.5, stopping down 1 2/3 stop help to maintain descent sharpness. I should buy a good zoom lens soon. Just waiting for some test on the new Sigma.
Thank for your critics, it is noted.
Blue Jay (12)