DieselTech wrote in post #16578793
this lens has me stomped. to get 150-600mm 6.3 or a TC 2x III for my 70-200mm? With the sharpness of the 70-200mm, I could always crop? ^_^
I have the 70-200L 2.8 II with the TC 2X III and just for reference, the 100-400L walks all over that combination. It is a fair and useful tool with the 2X III just not as good as the 100-400 is @ 400. Imho of course.
This new Tamron hints that it is at least as good as the 100-400 is with the 1.4 TC, probably better at 560mm +. The proof will be in the pudding with real world test results of my own, for my own opinion of course. The pictures that are starting to trickle in are promising, to say the least.