Cotty wrote:
>
> Hi Frantisek,
>
> I've always found the build quality of Tokina AT-Xs exceptionally good. I
> have a 90mm 2.5 Macro and a 28-70 2.6/2.8 zoom (and until recently a
> manual 80-200 2.8 SD zoom) and they are all well built - ver much like
> Pentax MF lenses. Sturdy, maybe slightly heavy, lots of metal, solid. I'd
> always consider a Tok.
>
> Sigma EX - wise, I have the 70-200 APO 2.8 zoom and although the more I
> use this lens the more I like it, it does not engender the same sort of
> feel. That isn't to say that it is poor quality - Sigma have come of age
> with lenses like this, but there is more plastic (or poly-wossname type
> material) used, less metal. This helps the weight, but I just don't get
> the feeling that it will last as long somehow. Maybe that's why I'm
> enjoying it more - cos I have to in the time available ;-)
>
> Hope this helps,
>
> Cotty
In my experience of buying and selling used equipment, most lenses
aren't built very well today regardless of who made them. The FA* lenses
are an exception, along with other camera manufacturers top end lenses.
I've never seen a third party manufactured lens that can stand up over
time like the FA* lenses. Even the metal bodied lenses are suspect. I'm
not convinced that the Tokinas are put together any differently than say
a Tamron, they just use metal barrels instead of plastic. I've seen the
same problems with both Tamron and Tokina over time, loose barrels,
focusing past or not focusing to infinity, wobbly mounts, stiff or loose
aperture ring, and aperture blade problems (oily, not closing, sluggish,
etc.).
I've never met a Sigma that I could trust. From top to bottom they seem
to me to have the worst build quality of the big three. Keep in mind
though that they seem to be as well built as a cheap Pentax (or Nikon or
Canon, etc.) like the current 28-80. So it isn't as though they can't
give decent results, just don't expect them to last the rest of your
life...
Isaac
>
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