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Last week I did a dust check before a shoot and saw visible dust spots at f16 shooting into a white screen or blue sky.
I wet cleaned my sensor and checked again - they went away.
After my shoot I put my camera away for a week.
I just did another dust check and there is more dust on my sensor.
How is this possible? I didn't change lenses and I'm using a prime so there's no zooming in/out.