Don't seem difficult to focus Mike Great shots
It will not be easy handheld but we'll see
Have not test my yet ..but will do so as soon as the weather is better but it seems to be bad this weekend
quick test
Handheld 1/5 iso 6400 IBIS set 300mm @5.6
Contax 100-300mm F/4.5-5.6 Vario-Sonnar T* by Ronny Olsson, on Flickr
Feb 02, 2017 at 02:32 PM
Previous versions of Ronny Olsson's message #13904628 « The Contax 100-300 Vario-Sonnar »
Great shots 
