This is the guy I was telling you about, it`s a different video but it`s good to see someone talk about poor quality with TCs and atmospheric conditions due to distance. I thought it may be interesting.
https://www.youtube.com/watch?v=iRb9XfAe9_4
Teleconverters, reach etc.
Re: Teleconverters, reach etc.
How did you stay awake. 
