Venus Optics officially announces the Laowa 58mm f/2.8 2x Ultra-Macro APO

There is the option to use a automatic macro rail, sadly not a cheap one.
And as you get toward macro range, you are likely not to want to move the focus, and change magnification, or rather set the magnification with the focus ring and then move the camera to focus on what you want. That becomes even more important with stacking. I'm not likely ever to need a motorized rail, but I can imagine how that might be handy.
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