They are really good - which size "tubes" did you used and how much nearer can you get
what fvalue did you use?
Thank you! I use all three together for a total of 47mm. The cicada was f/8, ISO 400, and 1/320 with -.3 EV. The bee was f/5.6, ISO 400, and 1/124, also with -.3 EV. Both on a monopod. The minimum focus distance without the tubes is 3.3 feet. I have't measured, but it seems like maybe two feet or so is the distance with the tubes.