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09-24-2010, 06:39 AM   #1
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ZX-30 v. Sigma lenses

I have a ZX-30 where the autofocus fails on the two Sigma film capable lenses I have:
28-80 Aspherical Macro (came with camera and works on an SF1)
28mm 1.8 EX DG
With both it sounds like a clutch is slipping.

However, the AF works just fine with:
DA 1:3.5-5.6 18-55mm AL II
New Tamron AF 17-50mm 2.8 IF
Too bad neither will cover the format.

Is the camera wearing out or do Sigma lenses require more torque than this model delivers? This camera was a gift and had been overhauled about 3 years ago, but for transport issues.
BTW, the Sigma zoom is fully usable on my K200d. Not a bad lens at all.

Last edited by c a sugg; 09-24-2010 at 06:40 AM. Reason: punctuation
09-25-2010, 08:43 AM   #2
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If the lenses work on other cameras, it sounds like you might need to put fresh batteries into your ZX-30!

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09-27-2010, 05:02 AM   #3
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New, in date, Energizer e2 Lithiums. Are there counterfeits floating around? Shutter and transport sound fine.

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