Originally Posted by
DanK
sorry, I wasn't being clear.
The two lenses I mentioned are high-magnification specialty macro lenses that go up to a magnification of 5:1. They have no focusing rings. Instead, they have rings that adjust the magnification. The ONLY way to focus is to move the camera. In contrast, 'normal' macro lenses, like my EF 100mm L and EF-S 60mm, have a regular focusing ring.
If you have a lens that focuses, it makes no difference whether you create a stack by moving the camera or by changing focus with the lens barrel. At high enough magnification, it may be hard to rotate the lens barrel accurately enough, but at 1:1 or even 2:1, rotating the barrel is fine. Re software: makes no difference. Zerene will handle it fine regardless.
I stack a lot, but I have almost always created the stack by changing the focus using the lens barrel. I've become adept at it and don't really have to think much about it. This simply won't work when I get one of those other two lenses, which I expect I will. That's what I meant by craft. What I have learned to do well won't work, and I will have to learn to control focus with my rail. (I'll have to figure out how much of a rotation of the adjustment screw corresponds to a the largest acceptable change in focus.)