>>49675525
Unless you're a pro, you can't clean inside of a camera lens. You can only use a lint-free cloth and wipe the exterior glass of your lens. If you look through your lens, you might see dirt inside it. That is normal from regular use. Sometimes the artifacts won't be seen in certain aperture stops. Nikon might have a program to clean/refurbish your lens if there is dirt inside for a cost.

>>49671542
Pic related?