Tip for UK users, put x2 £1 coins and a 20 pence piece on (weight about 23-25g) the 45mm for a quick and dirty fix of getting rid of the micro vibrations.
Its not perfect, but MANY times better than running it without. Ideally someone has a proper solution/ring but this is a quick and dirty solution if you want to gt video.
I was quite amazed how big a zoom it is, its massive. I was 200 meters away from a subject the other day and I had to fly back further to get it all in view.
This lens has its uses, would make an awesome mid air security camera for anyone in security.