I also use them to protect my glass.

it's much less expensive to replace a scratched UV filter than front element!

I use both protection filters AND polarizing, ND and grads.

I tell my students to use UV filters for protection and to cut UV. We live above 4000 ft.

I prefer a lens hood to an additional piece of useless glass over the lens. Digital sensors can not see ultraviolet light, which makes it silly to use a UV or haze filter.

Being an old school photographer, now even with digital, I find that programs will not equal what filter can accomplish when used correctly.

Im still old school as far as accessories for the camera.

I haven't found any software that will replace a polarizing filter.

A polarizer filter is great you can't or take away what you don't already have.

I only use polarizing filters. For protection I keep the lens hood on. Not only does it protect the front element, it also cuts down on flare.

UV & Polarizing Filters are a must!

It continues to be my practice to "fix it in the camera" first. You can always shoot it both ways.

Polarizer only. Grad filters are available in software.

I also use a Tiffen Enhancing filter on occassions, like for fall colors. It's an effect that is truly unique, and difficult to produce digitally, even with the use of "selective color" controls.

I use a UV filter for general shooting and other specialtiy filters for enchancement and special effects.

For me, a polarizer is a must have. I also use grad and ND filters. I'm becoming less concerned about using a UV filter for lens protection since I always use a lens hood.

I use UV filters for protection (saved a lens once) and other filters to get the best possible image in camera.

Polarizers on every lens, full time--nothing in Photoshop can do what a proper light-modifer over the lens will do before the light hits the film/sensor. And yes, Wratten 25A deep red filters for IR film--a stash of frozen Kodak HS Infrared!

Although software post-processing can do a lot, some things are best done while shooting.

I am new to filter but I still use one to protect my lens.

I used polarizer and ND/grad quite a bit, but I still have a warming filter and a red enhancer that I use every now and then too.

I believe as a photographer you need to do everything possible to capture the image as close to perfect in the camera. I feel people who manipulate the image excessivly with software are "Graphic Artists" and not true photgraphers.

Filters like polarizers are an esential tool when taking landscape photos.

Still use filters but I shoot a mix of digital and film. But I will use the polarizers and warm filters on my digital.

I can't live without my ND, grads, and polarizing filters.

Have never found software that can perfectly duplicate the effects of polarizer or grads.

There are some things that can't be done in software. Polarizing is one. ND grad can be simulated with multiple exposures and HDR, but it's a lot of unnecessary work when you can get it right in camera.

I also keep on all my lenses an UV filter for protection. Polarizer filters are fanatstic for nature landscapes and I use them any time I can. Also I use a 4 star filter.

The real filters give better results. I do not have to tweak simulated results that are someone else's idea of what the results should be.

I use my camera in a coastal environment--the filter keeps sea spray off of the lens element.