Correct. Skylight and UV filters date from the film days. They don't serve any useful purpose on digital cameras, although some people use them as physical protection for the front element of the lens. This is controversial and there are different opinions about it. Personally, I use a lens hood all the time and don't bother with filters unless there's blowing grit/dust/spume etc. I do suggest using a good one, if you want this option though. Cheap filters can cause flare/softness under some conditions.