Coating color of 180/3.4 APO

<p>What is the coating color of the front and rear element of the Leica 180/3.4 APO? Thanks!</p>

<p>yellowish color for the earlier series VII filter size and purplish color for the current 60mm filter size.</p>

<p>Thanks for your info. Any different in practical shooting ?</p>

<p>Not that I know of. I use the 5D for my R lenses.</p>

<p>From what I've seen, they changed from the greenish-yellow outer coating to the purple one shortly after the 3000000 s/n, c. 1980. (Don't know whether that coincides with the E60 version of this lens.) I prefer the later coating, and in wide-angle lenses it resists sun reflections/flare better. I imagine it would make less of a difference with a 180mm.</p>

 

<p>Thanks Eric.<br>

So, there're 2 different kind coatings for the later 11242? And I wonder if there's any different in the coating for the last production run in 1997-1998?</p>