As for SONY A 7s - I have an increadible high ISO test results: https://plus.google.com/u/0/113540123829280887772/posts/CKuXBfAh42Y?pid=6073189452363714706&oid=113540123829280887772
I have bought it and - oh, no! One side has 1/4" and the opposite - 3/8" thread. How is it supposed to be put in between monopod and a ballhead, that sits on monopod??? Guyes, get me the right one!
Looks like a goog compact companion to a full-size Canon DSLR to share lenses.