I have this squiggly black line that looks like vitreous floaters in my pictures. They usually only appear when I'm taking the sky? It does not appear in over 95% of the pictures I take.
Please do advice. I do not think it's the lens as my lens is new and even with the ones I tested at the shop, it still can be seen. Could it be my body? A 2nd-hand Nikon D70.