Hi Jack,
I have somewhat of a lesser 3x something (kenco) as I am not at home,"it's an older version".
I had it on my 50mm compact macro the other night, fairly good lighting and a pod. The auto focus worked which surprised me, but the pictures looked OK,,I pulled a 30 second exposure at f16,,
,,,that's about the last of that, I think I can make it work once in awhile and pull it out. Have had it for about 5 or 6 years. I'll keep it but I have never posted a picture much less shown anybody a picture taken with it,,
