Oh by the way Denise I forgot an important fact. When you use your 300mm with 1.4x extender you've already got almost 500mm lens equivalent. And you can't put an extender between the Tamron and the camera I guess. At least it wouldn't autofocus at all.


So that being said, 1 things remains. Is it maybe the versatility of the zoom that you are missing?


More zoom than you've already got, you just can't get for your budget. And I doubt if a 600mm, 800mm or even 1200mm would make you more happy.


Sorry [A]