It was years ago that photographers started to move away from using UV filters. Instead, they just used their lens hoods or lens caps instead. That's what most photographers do today. But in the past few years, the lens hood has become quite problematic at least when it comes to sizing.
D, CPL, and a UV filter. Better yet, they're magnetic. Magnetic filters have had varying degrees of build quality over the years. But most of all, they're quick and easy to use. It goes without saying that lots of folks love convenience.
Back in the analog days when everyone shot film, it was common for photographers to slap UV filters onto their lenses to help reduce haze in their images. While some photographers still swear by UV filters today, they're primarily used as a means of protection rather than to reduce UV transmittance.
If you're looking for lens filters to protect the delicate front element of your lens, Schneider Kreuznach B+W Filters are among your options. The filter collection just saw a couple of new additions to the T-Pro range, designed with a thinner profile to match cameras that are getting more and more compact.
To begin this review, I'm going to say flat out that Lomography XPro Slide 200 film has to hands down be the weirdest I've ever worked with--but it's been a pleasure and a very fulfilling learning experience in my own pursuits with bettering my own photography knowledge.