Use the search feature at the top of this page; there are dozens of threads on this topic in this forum.

This subject has been hashed and rehashed and covered ad nauseam.

There are people who think protective lenses will save them from replacing the front element of their expensive lenses... when in REAL life, even the CHEAPEST plastic lens is harder than the best protective filter. That means that the filter is NOT protecting the lens, but it IS increasing flare and ghosting and decreasing contrast in the process.

Very few people need a UV filter on digital cameras, and they provide as little protection as so called protective filters do wile also increasing distortion.

Now there will come the usual tirades about how a protective filter saved this lens during a fall or that lens when the sand was blowing, and that you can't tell the difference in image quality between a filtered or non-filtered lens. Blah, blah, blah.

I am a scientist and apocryphal tales abound... ESPECIALLY among people who don't understand cause and effect relationships.

Use a filter if you wish. It's just a waste of money and effort and does NOT protect your lens, especially when a lens hood and common sense precautions work 10 times better without degrading image quality.