Hiya UV Polarizer combo filter

I know some photographers who use that "combo" filter and really like it. But generally, they shoot with "bare lens" most of the time. For them, that combo filter is their go-to circular polarizer, and they don't use a protective UV filter at all.

Personally, I always have a top-quality UV filter on my lenses, and will swap it out for a circular pol. when necessary. If you're shooting in more controlled situations, I'd say you'd be fine with that "combo" filter. But if you're shooting documentary, run-and-gun stuff, outdoors, in difficult environments, use two separate filters.
 
From Bob Atkins' article…

"There are basically three color sensitive layers, one sensitive to red light, one to green light and one to blue light. The blue layer not only responds to blue light, but also to UV light, so if there is a lot of UV around the blue sensitive layer gets extra exposure and the final image takes on a blue color."

This discussion is primarily focused on film, but digital sensors work in a similar way (my brain says). So…this and protection is why I use one. But most of what I shoot is outdoors and under lighting conditions I have little control over. Your mileage may vary.
 
Stephen Mick said:
From Bob Atkins' article…

"There are basically three color sensitive layers, one sensitive to red light, one to green light and one to blue light. The blue layer not only responds to blue light, but also to UV light, so if there is a lot of UV around the blue sensitive layer gets extra exposure and the final image takes on a blue color."

This discussion is primarily focused on film, but digital sensors work in a similar way (my brain says). So…this and protection is why I use one. But most of what I shoot is outdoors and under lighting conditions I have little control over. Your mileage may vary.
Click to expand...

I agree. For me at this point its really force of habit left over from early film days and paranoia lol. You can shoot with out UV fairly well but honestly it will never harm your photos (IMO) and the extra layer of protection on your glass is big for me (My lens cost about 1,100 bucks). Plus if it ever gets stained or gunked up or anything you have the option of removing it to shoot bare till you can lean it up if your short on time.

But to each their own. Some feel its a waste of time and money or that it might mess up their photos or the coloring some how. So follow your gut I suppose.
 
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