A few photos with the Tamron 100-400mm on the Sony A7RII.
It's a f4.5-6.3 lens, for the Canon EOS camera, however with the Sigma MC-11 adapter I was able to use it on the Sony A7RII. I took a risk there, new lens, just out, but it worked today.
I will test it out further tomorrow. [my amateur test results: normally can't recommend the combo due to limited autofocus at this point, otherwise it's very nice though] It's dark now. Only astrophotography is possible for the most part, if the good Lord parts the clouds. Might try some, but have some samples to work on from a txistu too which should be quite fun.