Dobbo25 said:Stupid question but is the smudge visible all through the aperture range?
The reason I asked is that I have come across lenses that have had mildew on the inside. If the mildew was at the edge of the lens and you used a wide aperture it was visible, a smaller aperture and you could get away with it.IanM said:Dobbo25 said:Stupid question but is the smudge visible all through the aperture range?
No, it's not stupid at all. If it's dirt on the sensor, it's more likely to show up at smaller apertures (f11-f22) than wider ones.
Ian
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