Yesterday my Nikon D300 with a prime lens on it fell from a couch to a hardwood floor. (16 inch). It looks like nothing is broken and everything seems to be working. However I am still concerned... Most people probably wouldn't care about it, but I am extremely sensitive to even tiniest imperfections in terms of camera performance. I am wondering if this impact can cause any malfunction that isn't noticeable right away. Can it affect precision of image recording, or cause decrease in image quality, speed of data transfer or decrease in the performance of rarely used features (for example: self cleaning) etc? Thank you!