"Mark Kovalcson" wrote in message
...
I have the Nikon 70-300 G lens, and was quite disappointed in its slow
focussing and soft image at wide apertures. It now lives in the back
of
the cupboard until I need a lightweight lens with the range. The lens
I
lug about with me is a Sigma EX 70-200 f2.8 APO. I love the lens, and
have the arm muscles to prove it :-) As the previous poster says, don't
expect too much from an inexpensive lens.

Dennis

That is quite a price range and unfortunately none of these lenses focus
really quickly.

~$100 Nikon 70-300 G
~$200 Sigma 70-300
~$300 Nikon 70-300 ED

~$700 Sigma 70-200 f2.8

Now if you really want sharp at f2.8, fast and accurate the ~$1400 Nikon
70-200 2.8 VR is the best lens out there for that range.

Using 300mm on a D70 puts you at 450mm equivalent which is very hard to
hand
hold to get a clean shot without a high shutter speed.

In a Canon lineup there is a more selection among the fast focusing sharp
lenses. I'd have a 70-200 f4L in a heartbeat. It is very sharp even at f4
and fast focusing lens with a reasonably size and weight, half that of the
Sigma 70-200

$550 70-200 f4 L
$1000 70-200 f2.8
$1400 70-200 f2.8 IS


Thanks Mark

That is a grand job you have done of listing the available range.
Had cost been no object, I would have gone for the Nikon 70-200 2.8 VR and I
had been considering the Nikon 70-300 ED.
In the end I decided on the Sigma 70-200 2.8, and have been very happy with
it in all respects.

Dennis