28-70 2.8 D EX Sigma lens query: Quality?

Hello,
I've been looking at a couple used lens at the local dealer shop. One
that intrigues is a Nikon mount Sigma constant aperture 2.8 EX 28-70.
It includes lens shade and 77mm Nikon filter. Lens appears xlnt
condition overall. Price is somewhere around $150.
The price seems fair for the focal length but I'm curious if anyone
here has actually used this lens and what their impressions of it are?
Seems well made with multiple aperture blades but it doesn't seem to
focus closer than about 2 feet or so. Any constructive pros and cons,
review links, etc are welcome.
Thanks very much for any help.
Al

wrote:

Hello,
I've been looking at a couple used lens at the local dealer shop. One
that intrigues is a Nikon mount Sigma constant aperture 2.8 EX 28-70.
It includes lens shade and 77mm Nikon filter. Lens appears xlnt
condition overall. Price is somewhere around $150.
The price seems fair for the focal length but I'm curious if anyone
here has actually used this lens and what their impressions of it are?
Seems well made with multiple aperture blades but it doesn't seem to
focus closer than about 2 feet or so. Any constructive pros and cons,
review links, etc are welcome.
Thanks very much for any help.
Al


I've used a similar lens in Pentax mount and been quite pleased with it.
It's a reasonably fast, "normal" range zoom (i.e. covering from slightly
wide to short tele). Versatile for those situations where you don't want
to do a lot of lens swapping.