Originally Posted by
Loren Pechtel
It's about 20 by now. It still works fine but I've decided it's time to enter the digital age.
if it's autofocus, it might work on the sony cameras. however, as i said, do look at the alternatives.
It depends on how clean a place you are in. Most of our travels are in China.
unless you are working in a dust storm, it won't be a serious issue. a rocket blower is $10 and it works very well. there are cleaning kits for stubborn dust, but i've yet to need one.
also, unless the rear element of the lens is sealed (most aren't), dust will be able to get in via the lens as it's zoomed in and out.