Originally posted by Lowell Goudge I have previously posted several shots from my K300/4 and 1.7x AF TC. While a little more than a tak at about 350 current price it is a solid performer also. CA is more of a shooting situation issue than anything else
Indeed, but with birding there's not much I can do about the situation. Branches are pretty much a given, as is the lighting (I don't have loads of time to wait in a shelter for my birds to appear. So I want my pictures as good as possible in any circumstances).