>Hi all,
> i am looking for information on the Sigma(s) 400mm f5,6, regarding the
optical quality. >As I understand there are serveral versions ( Apo, Apo
Macro, non-Apo etc. ) of this >lens. ....
About five years ago I bought a Sigma 400 f5.6 APO lens. I was not
happy with the optical performance. Not sharp and low contrast. It
stayed in my bag for a while but I eventually sold it - I never used it
because I was never happy with it.
Recently some people where wishing that Nikon made a AF 400 f5.6. Since
the AF 400 f2.8 (non AFS) is way out of my price range, and is likely to
be for a long time to come, I'd be receptive to a slower lens.
Personally I'd be happier if they made a AF 400 f4 that way you would
have an option of adding a 1.4 X teleconverter with out going to a, IMO
too dark, f8 lens.
Ian
