On Sun, 30 Aug 1998 03:12:40 GMT, gtal@netcom.com (Guy Tal) wrote:

>I'm looking for reviews or any other online resources about the Vivitar
>Series 1 90-180 flat field macro zoom.

I tried one years ago, and my impressions were:
- enormous and heavy and slow (the 75-150 f3.5 Nikkor E was
far smaller and lighter, and almost a stop faster)
- good evenness of sharpness everywhere in the frame, but
not a "zinger" (the 75-150 E was noticeably better here)
- very low distortion
- good close focus ability
Overall, it didn't seem worth the trouble, unless the need
was for a zoom with close-focus ability and unusually low
distortion. Otherwise many other lenses are more practical.
This is a HEAVY, BIG lens, but it is neither very long in
FL, nor very fast...