Those persistent dark spots in your images with small apertures (>f/5.6) are likely dust. Even with the “auto dust-removal” feature, dust will cling to your charged sensor.
Typically, just an air burst will free it from your sensor (and from your images). For this task, I recommend the simple and inexpensive rocket blower.
One note, though I haven’t seen it, it appears at least one photographer has tangled with the TSA. Solution? Trim off the fins.
(And for folks that missed the series introduction, this is Photo 101: Introducing Photo Concepts in 101 Words or Less. So, if there’s a photo topic that you’d like to see here on Camera 47 – drop it in the comments below or contact me by ways of the About page.
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