When I would sell my current Canon L /Sigma lenses (in my signature below) to switch to native Sony glass or Sigma Art Sony mount glass :
I probably wouldn't have enough cash to buy the same in Sony lenses or Sigma Art lenses with Sony mount (all second hand prices) ?
24-70 2.8 & 70-200 2.8 G-Master lenses would too expensive and there are no Sigma Art Sony versions yet ?
What would you do, keep my current glass with MC-11 or Metabones adaptor on the A7R II ? The A7RIII is too expensive pity enough.
I saw there is also a Sigma 50 Art with Sony mount, would this be an advantage switching form my Sigma 50 Art Canon mount (seen that I buy an adaptor anyway) ?
The Sigma 85 Art Sony mount doesn't exist yet or is in the making ?