Sorry, Ted, I responded to what you wrote, not what you meant. I'll try to read your mind better.
About Lefkowitz, he's aimed more at working above 1:1 than at a particular format. The problems don't vary with format, only with magnification.
Cheers,
Dan
"I'm not sure whether Apo Skopars, which, name notwithstanding, are 5/3 heliar types, are quite symmetrical. "
Dan, they are not completely symmetric, even discounting the aperture placement. If one unscrews and checks the focal lengths of the cemented doublets at each end of the Apo-Skopar, they are not equal. They are both positive and not worlds apart in focal length, but different enough that you do not need an optical bench to see it.
Do the shots with your regular lens stopped to 22. If you are happy, do nothing.
If the corners are too soft in flat copy or if the image is generally not sharp enough, you will need a lens like the G Claron.
With three dimensional subjects, a standard lens should be adequate. If you need to reproduce flat copy or smaller than 1:1, a macro probably is needed.
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