Leica 21/2.8 worth it?

[popobsd]

I have C-Biogon 21/4.5 for a few weeks, And I had 21ASPH from my friend,
I just forgot the 21ASPH immediately after having the result.
C-B 21 has the advantage of glare and distortion control. 1and1/3 stop slower is not a problem for me.

 

[Hacker]

I wanted to get the Zeiss f4.5, but I believe coding is difficult. I really think the size is nice compared to the WATE or the Elmarit ASPH.

 

[thomasw_]

Tom A has written about the ZM 21/4,5 a few times; he seems to think very highly of its performance. Perhaps you might check flickr to see some sample images; the M-mount group on flickr is your best aid for image samples when making these decisions🙂