I have no expeience of this lens, but naming the lens in the thread title generally gets more views and responses. Threads that need you to open it to discover what the secret squirrel topic of the day is generally get ignored. You should be able to edit the thread title by editing your opening post..
Can you use Extenders with this lens some say you can and some say you can not
I shoot sport and wildlife when I can get out to do it
Can you use Extendes with this lens some say you can and some say you can not