Oh no....I just knock my Nikon D80kit lens on the ground then there is now a hair line crack seen from the viewfinder. Then I took a few shots but don't see any visible lines on the photos whether is it zoomed in or not. I don't have time to send it to NSC for repair as I will be flying off to Africa tonight. What can I do? In normal circumstances, how will the photo turn out to be if there is a hair line crack on the lens? Is the lens still usable?