Which functions exactly aren't working right? I played with a couple of the SP lenses a few years, and purchased a dock for updates. Maybe the Tamron forum is where to ask. Both 24-70 lenses are listed and neither needed a firmware update. Aside from...
Of course, with an EF to R mount adapter.Question is, what about IBIS? I use all Zeiss primes and I’d love IBIS for the longer ones, but I believe, at best, I’d get 2-axis stabilization, if at all. Still, that’s a benefit.
