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What to do about autofocus locking on to dust on the lens surface?

autofocus dust Lens locking
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What to do about autofocus locking on to dust on the lens surface?

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The remarkably close-focus feature mentioned above might be considered a bug when you are outdoors in bright sunlight and using the zoom at maximum wide-angle. The light causes the aperture to be stopped down as much as f/11 which can increase depth-of-field to include the front lens surface itself. Inevitably there is some dust there which the auto-focus circuit sometimes focuses on, instead of the real scene (a few people report this always happens; on my camera it can, but is rare). Solution: (1) when in bright sun, use the internal ND filter, optionally an external ND/polarizing filter as well (this opens the aperture, reducing depth of field; picture quality tends to be best around f/8 or f/5.6 anyway). (2) don’t use full wide-angle, or (3) use manual focus. • What about the zoom control? The TRV9 had a VERY sensitive zoom button, you had to apply the minutest of pressure to get the slow zoom to work, it made for very “zoom offensive” shoots, and was a real pain to get used to. Th

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