I couldn't finish the subject line because I'm a long winded blabber mouth. Anyway I was testing a Tamron 70-200mm F2.8, with a 25mm extension tube and a Yongnuo 560 flash. Only downside I see with this flash is no TTL. Requires manual mode. Other than that, for the money, it's a hell of a flash unit. That is, if you don't mind shooting manual. 1:1 macro gives very little working distance for bee's , butterflies, and you basic larger insects. Just when you're about to release the shutter, when you finally got in close, GONE, they disappear. 1:3 macro which is what the tammy has, is not quite enough and you end up cropping the shyt out of the image, losing pixels. I'm trying to find a happy medium for certain quarry. This is what I came up with.