Today I dropped my Nikon D50 with AF-S 35mm from about 0.5m high to wooden floor. Lens landed first. Everything seems to be fine except that the lens is making disquieting sounds when autofocusing. It's a bit like scratching and rubbing. Focusing manually works fine.
I also tried some other lens but they all works: no sounds. I'm a bit worried since the motor might be broken.
Is it serious? Can I fix it myself? Or should I visit a repair shop?