The Zuiko 180/2.8 has chromatic aberration, a 2x will amplify it too
much, not recommend for scene with bright reflections. The 2x-macro
help only a little due to the long focal length of 180 but it gives 1x
mag. on the 50mm.
C.H.Ling
"Richard F. Man" wrote:
>
> I have a zuiko 180/2.8. Optically, how would it compare if I match it w/ a
> 2X teleconverter vs. say a 300/4.5? The teleconverted combination is
> smaller and lighter no?
>
> And if I have macro lens and extension tubes already, is there any
> advantage of getting a 2X-macro vs. 2X w/o macro? I am specifically
> thinking about the Vivitar version.
>
> Thanks!
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