« on: November 17, 2014, 12:32:48 PM »
In response to GraFax, I really like my 400 DO. I purchased mine about 18 months ago and it's obviously the "old" model as opposed to the one that was just issued. It's light and razor sharp. I've read a number of critiques of the older lens and, to be honest, I experienced none of the problems that some raised.
As for color variation among red tails, yes, absolutely. The one in the image is a standard "southwestern" bird, typical of what we see around here (Arizona) in summer months. Wintertime is more varied because we get a lot of migrants from points north, and these tend to come in different colors.
Here's one more, in this case, a juvenile.