Is this dust on the sensor or problem with the lens

Started Aug 10, 2013 | Questions thread
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Re: Is this dust on the sensor or problem with the lens
In reply to techmine, Aug 10, 2013

what you described being noticable at f22 and not wide open aperture is symptomatic of dust on the sensor. Another indicator is if the spot is at the same location in every shot.
Photographers will often say how they were unable to clean their sensor whilst travelling abroad and they were restricted to shooting closer to wide open and smaller dof.

Try using a blower of some kind, not your breath, not canned air and hopefully it will remove the contamination. Also try facing the sensor pointing down when you do it. Blow the chamber as well.

If that doesnt work then a wet solution is required.

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