at 400mm f8 it's almost reasonable, it is exceedingly light weight for a 400mm.
Frantisek Vlcek wrote:
Monday, August 2, 2004, 6:47:02 PM, Peter wrote: PJA> I have one, it's not bad. I seldom use it and from my experience it's PJA> not very practical at 600mm but you can PJA> use it at that focal length in a pinch.
IIRC, it has variable aperture f/8 to f/12 as you zoom. f/12 is really slow for a 600mm lens. Probably only usable for photographing nuclear blast tests ;-)
(ok, it might be interesting for a landscape photographer for distant views like mountains where you might need zooming for tight compositions - the slow aperture will not be a problem there, and the lens might be small and light enough for a hiking bag)
fra
