This may not be the right forum...
...but I just picked up a used Canon 100-400L at a good price and used it for the first time the other day while my Golden Retriever was doing what she does best. I like the extra reach over the 70-300L. Need to get more adept at the push-pull mechanism. But overall, I'm satisfied with the initial results.
|Nowhere by Nanard 92|
from The Illusion of Depth and Distance
|Green Tomato by lim yau tong|
from Growing Fruit