>That's true. My SP 2.8/35-105 did the same. It was an exceptional lens
>when I got it, (but wide open), but after year of semi-pro use it got
>wobbly and resolution dropped down. It's clearly visible in the slides
>I shot when testing it after purchase and slides now. And I have got
>the manual focus version, I think the AF would be even worse.
>
>This experience got me back to K & A primes... They just don't have
>such problems. Or maybe * zoom, if I can get enough money.
I believe the problem was caused by the plastic mechanisms inside. The whole
lens was plastic basically with metal shell. The horrible experience with
this particular zoom caused me to stick with Pentax primes since.
Regards,
Alan Chan
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