The Nikon D40 was released in 2006 as an entry level DSLR.
To remove small dust/oil spots that appear in pictures using a small aperture.
Is this a good question?
An expensive micro-fiber cloth will not scratch it.
Was this answer helpful?
Looks like Nikon has a guide for that.
Past 24 Hours: 0
Past 7 Days: 1
Past 30 Days: 3
All Time: 289