Quote:
Originally Posted by Suzy_A
A true macro lens will be fixed focal length and have opical elements that move in relation to each other as the focas is changed. In comparision, with a normal non-macro or pseudo-macro (close focussing) fixed focal length lens, the lens elements will normally not move in relation to each other, simply in relation to the film/sensor plane. My 50 mm macro has an internal curved rail and slider that moves the individual lens elements in relation to each other as well as their distance from the film plane.
|
Thanks Susan for the very useful information, particularly this pieces above. I have wondered where the line is between a lens that focuses close and a lens that is truely a macro lens.
Very much appreciated.
Roger.