Quote:
Originally Posted by Leif
I have just bought the Sigma 400mm F5.6 APO Macro, and it seems to work fine on a D200. I was using continuous auto-focus to track ducks yesterday (first time I've used auto-focus too). Optically it seems okay but not a match for the best Nikon lenses.
|
If you try to use the Sigma 1.4 AF converter on a 400 f5.6 AF lens, (Sigma or Tokina), it will not autofocus unless you tape over one of the electrical contacts on the converter. You can retain autofocus with either lens using a Kenco or Tamron 1.4 AF converter. Build quality and optics of the Tokina 400 f5.6 ATX SD lens is far superior to the Sigma of the same spec, I've had both! I now have a Tokina 80-100mm f4.5-5.6 ATX Zoom, a great lens, in a convenient compact size, very sharp and contrasty, close focussing and complete with a close-up filter lens which reduces minimum focus to approx 1.5 metres. Well worth considering.
nirofo.