I realize that I need some faster glass in the mid zoom range for outdoor sports and such. I've considered buying used an 80-200 2.8. As there are several models I'd like if someone has any experience with focus speed and sharpness on the following lenses.
Nikkor 80-200 2.8 AFS
Nikkor 80-200 2.8 AFD two ring
Nikkor 80-200 2.8 AFD one ring
Sigma 70-200 2.8 EX HSM
Thanks in advance
Nikkor 80-200 2.8 AFS
Nikkor 80-200 2.8 AFD two ring
Nikkor 80-200 2.8 AFD one ring
Sigma 70-200 2.8 EX HSM
Thanks in advance