----- Original Message ----- From: Dan Scott Subject: Sky, UV, Haze filters?
> O Sages, speak to me... > > What the heck is the difference between Sky, UV, and Haze filters? > > Are they all the same thing? It sounds like they are to me, but > manufacturers frequently offer two or all three side by side, so I can't > be right. > > How are they different, and cirumstances would cause me to prefer this > one or that one? Does a polarizing filter eliminate the use of the three? > UV filter is essentially a lens cap. They don't do anything that the glass in the lens already does. Sky and Haze are generally the same thing, and essentially subtract about 50�K from the colour of the light being transmitted. The idea is that daylight is often too blue, so warming things up a bit is a good thing. You can get stronger filters, such as UVB and UVC that give a stronger effect. I tend to distrust the little buggers, as more glass is bad glass to my way of thinking, but I do have UV-C filters for my longer telephoto lenses, on the off chance that they actually do something useful. Polarizers are a different animal altogether. However, stacking filters is aways a gamble. William Robb This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
