I was wondering, how much extension should I use to gain a magnification boost of 1:1 on an APS-C camera.
I mean if a have (for example) a 50mm lens should I use 50 or 80mm of extension to gain a magnification boost of 1:1. I already learned, that I should use 50mm of extension to get this boost on a FullFrame camera but is it the same on a cropped body?
Anyway I would like to ask you that the extension tubes or close up lenses are better if i'm ONLY care about the image quality (and money to some degree of course).
Thank you very much for your answer.
PS.: This is my first post on CIC, so i hope that post is correct.