Question about Quantaray 28-200mm f/3.8-5.6 for Canon AF
The aperture is not physically responding on my lens. The f-stop number changes on the LCD readout, but the aperture remains stopped all the way down to 22. Just wondering if anyone has any advice on the problem before I open the lens up to check the mechanism, as this is the only "auto-focus" camera I've ever tried to repair and don't really know what I'm getting in to. Thanks!
Does the lens have an aperture ring? If so, some such lenses also has a 'lock' (a tiny button near the narrowest aperture) enabling it to be used with cameras having CPU contacts. Check if your lens has this.
Posted on Feb 10, 2009
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Posted on Jan 02, 2017
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