Found this one that does highlight the capability of the 100mm with kenko tubes
I thought I'd give snow flakes a go, like here http://www.its.caltech.edu/~atomic/snowcrystals/photos/photos.htm This picture was taken whilst I was setting up the exposure, adjusting the slide rail etc, so focus is not great. But I did capture a snow flake (put red around it). Needless to say, when I was set up it started raining so never got another go at it lol

I thought I'd give snow flakes a go, like here http://www.its.caltech.edu/~atomic/snowcrystals/photos/photos.htm This picture was taken whilst I was setting up the exposure, adjusting the slide rail etc, so focus is not great. But I did capture a snow flake (put red around it). Needless to say, when I was set up it started raining so never got another go at it lol