I have owned this lens for four years now, and have been a professional
for the last year, and I have never had any of the build quality qualms that
others have talked about, and I bought it used. It is as sharp or sharper
than most good primes, has wonderful colour definition and contrast,
and is my 'normal' lens, always on my camera. My one complaint about it is
that the filter holder rotates during focus, making polarization a little
more difficult; but, the hood is large enough that you can rotate the filter
without removing the hood, something that you cannot do with the mighty FA*
85mm f=1.4 that everybody raves about (which I also own and rave about). A
magnificent lens, but the hood sucks; you cannot put the lens cap on when
the hood is in place (well, you can, but it is very dicey and you risk
scratching the front element), and although it is internal focussing, you
have to remove the hood to rotate the polarizer initially, negating the
point of internal focussing. So, in this respect, I have absolutely no
qualms about recommending the 28-70 2.8, and I love the powerzoom feature in
my newfound profession of pet photographer.
Any more questions, send me an email privately.
Cameron
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