The "smart" (Viltrox) adapter turned up tonight, couldnt wait for decent light so I bunged it on at 5:10pm in a rapidly fading dull light.
Tried it with (on X-T10 body)
EF 50 1.8 mk2
EF 85 1.8
EF 100 2.8 macro (no L or IS)
EF 70-200 f4 IS L
EF 300 f4 IS L
EF 100-400 f4.5-5.6 mk 1 IS L
efs 18-55 horrible plastic kit lens
efs 60 2.8 macro
To be fair it was dull and I was generally point it at stuff in my garden through a window (which needs a clean), so terribly unfair test procedure.
Really just a quick test, snapped a few things and general impression is it's ok, not brilliant but good enough so far.
50 1.8 seemed to have the iris opening and closing soon as it was mounted, hunted a bit until actually pointed at something reasonably bright then it settled down
Hit focus some of the time but not always
85 1.8 bit more hit and miss with focus, 100 macro similar
70-200 - surprised it seemed to like this lens, still a bit hit and miss but pretty ok
300 - not bad, nowhere near as fast or reliable as native body
100-400 forget it, didnt hit focus ever
18-55 only tried a couple of shots - I have the same focal length fuji lens so never going to use the Canon lens
60 macro - again pretty good.
Checked the jpegs in ZoomBrowser pixel peeped and the results looked ok at 50% zoomed.
A very un-scientific test in poor light, I didnt expect very good results and I wasnt disapoined, they werent very good, they were good enough to justify the £130 outlay though (in my view).
I bought it for a specific reason, to use with my shorter primes and only tried it on the other lenses because I could
I think it will work fine in decent light and with fairly contrasty subjects, but first impressions are favourable.
Hopefully I'll get decent weather Friday afternoon and have a much more serious play and post up the results, either in written or pictorial form.