I paid for the DHL express (I think it was $40!) and it was here in less than a week.
one thing I finally figured out is that for the "recommended step" use a small value for macro. 20 or less. Otherwise, you will only need a couple/three shots to cover the distance of the critter, which seems to work ok but I felt I wanted smaller steps for better detail and overlap. Time will tell!
I set my 300 PF for 18
200-500 zoom for 7 (I am almost always shooting it in 500)
And the recommended setting for the 150 Macro was 80.
I'm not saying what I set for the 300 and 200-500 are "correct"...yet!
Don't forget to program it in Liveview!
Camera in manual and lens in AF (so the motor will step the lens). I'm getting pretty good at manual focusing! I focus on what I think is the closest point and then back it off slightly so it is focusing in front of that point, and I shoot until I see the focus go past the "farthest" point I want. I get SIGNIFICANTLY better results using a tripod, and I prefer using a remote trigger (I have a cheap hard-wired one that works great!)
Otherwise, some of my bugs get extra legs in the focus stacking software!
Here is an example of where I got all of the Monarch Butterfly in focus AND the flower it was sitting on, with the 200-500 at 500mm, on a tripod with a remote trigger. That would not have happened without the tube!
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