There are black lines on my Nikon D3100 and I'm wondering if it is a problem with the lens or with the body itself.
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2\$\begingroup\$ What method did you use to obtain the photo? Looks like it's probably dust and lint on the sensor. Try using a blower to remove it. If that isn't good enough, see What is the best way to clean the sensor on a interchangeable lens camera (mirrorless or digital SLR)? \$\endgroup\$– xiotaJan 3, 2020 at 17:59
1 Answer
To me it seems dust on the sensor. Have you tried using the cleaning routine as described in the manual (pp.180)?