Originally posted by wtlwdwgn Well, that's disappointing and discouraging. I guess I'll go back to the old 1D2N and Sigma 100-300 plus 1.4x TC.
You just have to practice and make the adjustment needed for the combo and the shots will be in focus. Set it up on a tripod and adjust it. The depth of field is very narrow even at great distance so focus is paramount. I forgot to add that what I stated goes for subjects that are far away. When at, lets say, up to 30 yards it is a different story. I have made some very good images with the combo. At first I was dissapointed but I have learned, and still I am learning, to master the TC+DA*300. When used with my macro Tamron 90 it is a great tool to get even greater magnification.