When to clean sensor?

Started Jan 16, 2014 | Discussions thread
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Rey66
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When to clean sensor?
Jan 16, 2014

Just want to know how you guys consider "dirty".. I ordered a sensor cleaning kit, since I see spot @f22 to F32..But not on F11 down...Shooting macro needs F22 or higher for me and I see spots visible..

above is @ F32

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