« on: December 04, 2013, 08:49:31 PM »
The smaller size of the 500 II would make it easier to travel with, especially by air. As you say, the most significant differences are the cost and the 100mm of focal length. I'd say the 500mm would be better for wildlife and birds, whereas the 600mm is better for birds and wildlife. Since the latter more closely matches my interest, I went with the 600 II.
Thanks... I'm more into birding than wildlife so a 600 should be better. I guess a combo of the 300 and 600 should work fine for wildlife and birding.