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UV filter vs Skylight filter


chris_dyer

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Hi,

I just picked up a couple of new lenses. Ive always kept UV filters

on all of my lenses for protection, and plan to continue using filters

for that purpose.

 

But I wonder; what is the difference between using a UV filter or

using a Skylight filter?

 

I do a lot of wide-angle street photography, as well as some landscape

and portrait shooting.

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UV's were first needed because early lenses were not coated. Today's superior lens coatings do everything to light a UV filter was designed to do, so if I want merely to protect my lenses (I sure do) I choose the Skylight filter since it does something UV's don't do; they warm things up.
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I have found that the skylight warms an image a little bit and when used with Kodak film things lok really warm. I got into the habit of using Skylight with Fuli and UV with Kodak. Now that I shoot 99% digital, I have the same filter on all my lenses. Mainly for front element protection.
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I don't use either but rely upon a lens cap for protection instead. The reason being that I read articles from some pretty good pros that the extra two glass surfaces can contribute to degradation of an image. Just how much degradation remains to be seen but I suppose the bigger the print, the more it will show up. About the only filter I use is a polarizer. When shooting 4 x 5 I use Kodak gelatin filters for B & W - no glass surfaces.

 

Brad

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A skylight filter is a pale magenta filter. The Nikon L1Bc is

a CC025M filter (Color Correcting 0.025 Magenta). I think the

Hoya 1B is about CC035M to CC04M. For me a magenta cast on a skin

tone is quite unpleasant. It looks a bit sickly rather than warm

to me. Magenta filters green. If your subject is bathed in green

reflected light from foliage a skylight filter can help balance the

light.<br>

<br>

UV filters run from very pale yellow to virtually clear. The

Nikon L37c is one of those that is virtually. The L37c is my

standard filter.<br>

<br>

Regards,<br>

<br>

Dave Hartman.

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Chris - A skylight filter is a colour correction filter, designed to correct the slight blue cast that results from shooting under an open blue sky. (If you have seen snow scenes where the shadows are blue, this is what I mean, but it can also happen on the beach). It will also filter out UV, the same as a UV filter.

 

A UV filter filters out the UV only, with little or no effect on the colour balance of the scene.

 

If you use a UV filter, and shoot negative film, the occasional blue cast problem is easily corrected in printing, and most people don't even notice it. If you shoot positive film (slides) the blue cast will be very evident and can only be corrected if you have prints made from the slides (digitally or otherwise).

 

If you use a skylight filter and shoot negative film in conditions that would NOT normally require the colour correction effect, the resulting slight warmth is easily corrected in printing if you don't like it. If you shoot positive film, it will be evident in the resulting slides.

 

The worst you can do is have a UV filter on one lens and a skylight on another - the different colour balance between the two will be very evident on either kind of film if you mix the shots from the two.

 

I hope this isn't too confusing....

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Actually, shadows are blue. The skylight filter helps cut that down ever so slightly. The primary light source reaching a shadow area is the blue light coming from the sky and second is light reflected from an object in the area. Many times painters don't use gray for shadows - there's some blue in there.
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