With the 200 and 400 being prime you should also be able to use a tele convertor on it as well. I know on my 70-300 it's not recommended since the results would be poor.


I had a tamron 200-500 lens for a short time and tried a monopod. I didn't like the lens so everything went back. I should have kept the monopod to play with it more. I have treking poles so I don't need one for a walking stick but they are nice since they can become compact.