[cosmicma]

it's a bit like the guide numbers on flashes but somewhere along the line it does give a reference to the average layman
if the layman understands what it means is a different story

Originally Posted by StephenBatey

I'm not convinced by the 1:1 aspect; and have reservations about 50-60mm as a focal length for macro lenses.

https://www.dropbox.com/sh/ex2qpwuul...VCDl/macro.pdf

The link is to a section from my book.