Alley in Pisa, Italy

by Lars Kotthoff

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2
votes
4answers
178 views

Are these strange splotches on buildings in a long-exposure photo hot pixels?

This is the first time I've seen this in my pictures and can't quite figure out what it is / how it fix it / or how to avoid it in the future. Was wondering if anyone here had any ideas? The thing in ...
1
vote
2answers
404 views

What causes strange spiral pattern on my star line?

Ok, so I created this test image. The camera was behind the window, I just tested long exposure photography on the single star I saw. It was about 20 minutes of expo, star was out of focus (I really ...
10
votes
4answers
678 views

Where does this reflection come from in a long exposure shot?

Using a long (10 second) exposure I found I was getting an odd "reflection" in the picture, where the brightest object leaves a residue in the opposite part of the frame. You can see it here: I ...