What is a UV filter for a camera and what does it do?
- Picture TakerLv 71 decade agoFavorite Answer
Many people use a UV filter simply to protect the front element of their lens from damage. "UV filters absorb ultraviolet rays which often make outdoor photos hazy or indistinct." (from: http://www.thkphoto.com/products/hoya/gf-01.html )
We get this question often enough that I decided to upload a sample to Flickr showing the same subject taken with and without a UV filter. Download the image, cut a small section out of the top half and drag it to the same section in the bottom half and see what you think. The photos were taken about 15 seconds apart in subdued sunlight, so I think the lighting was virtually identical for each. There was no post-processing at all so you can make a fair comparison. I will not comment any further and let you decide for yourself if there is any color shift.
The picture was taken with a Nikon D200 at ISO 100 with the Nikon 18-200 VR lens @ 112 mm at f/5.3.
Buy a name brand like Hoya or Tiffen. Don't get cheap junk to put on the front of your fine lens.
- bravoLv 41 decade ago
provide additional benefits of correction for Ultraviolet(UV) light which can register on film and digital cameras as a bluish cast((haze)) ...so it can obscure distant details.
If desired they can be left on the lens at all times for protection ......They help protect your valuable investment from dust, moisture and scratches, which can lead to costly repairs.