----- 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 50ēK 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 .
