moonhawk wrote:
If you take an image if an object that is, say, 1 cm in diameter, the image on your sensor (or film, in the old days) would be 1/2 cm in diameter, focused at maximum magnification, or closest possible focus distance.
A lens is considered true macro if it can reproduce that image at 1:1 on the image plane, in our example, 1 cm.
Ah!! 💡 Ok thank you for explaining that.