Black spots on images...does my sensor need cleaning?

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35mmnewb Junior Member • Posts: 34
Black spots on images...does my sensor need cleaning?

My D750 is practically new being only 3 weeks old.  Most recently I was shooting cloud movement, and I noticed black spots on my images.  It shows up at the same spots on every picture.  I'm new to these kinds of things so any information will be great!  Is this undoubtedly sensor dust?  The built-in sensor cleaning does not seem to remove this.

They become noticeable when stopped down to f/10, and becomes even more visible around f/18 or lower.  Thankfully I can just clone the dots out, but it seriously bothers me knowing there's something affecting my images.

 35mmnewb's gear list:35mmnewb's gear list
Nikon D750 Canon EF 50mm f/1.8 II Nikon AF Nikkor 50mm f/1.8D
Nikon D750
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