Hi, the serious answer is this:
Yes, you have to rotate it. It eliminates reflections, so the time to use it is when there are a lot of reflections around, eg sunlight on water, or reflections off glossy leaves. You can preview the effect by watching it through the viewfinder. The effect is greater the nearer you are to an angle of 35 degrees with the reflecting surface. It also darkens skies (by reducing the reflections off airborne vapour) so that clouds stand out, and it increases colour saturation. It reduces the light transmission to the film by about 1.3 stops, so your viewfinder will be a little darker than normal. I personally wouldn't use it in conjunction with a red filter, but then, I wouldn't use a red filter. You shouldn't use it all the time. Use it only when it gives you the effect you want. You can use use them anywhere on Earth. You don't have to be in the polar regions. --- Bob mailto:[EMAIL PROTECTED] Tuesday, October 23, 2001, 6:37:03 PM, you wrote: > I am using exclusively black and white film too. > ----- Original Message ----- > From: "Bob Walkden" <[EMAIL PROTECTED]> >> Hi, >> >> I hope you didn't pay too much for it. Circular polarizers are >> specifically designed only to be used above the Arctic circle, or >> below the Antarctic circle. If you're shooting penguins in black & >> white (and why woudn't you?) the use of one of these filters increases >> the contrast, particularly on King Penguins. If you use it in >> conjunction with a red filter then you'll get pictures of flamingos. >> >> --- >> That was a plug'n'play answer, brought to you by >> Bobook of the North >> >> mailto:[EMAIL PROTECTED] >> >> Tuesday, October 23, 2001, 6:00:36 PM, you wrote: >> >> > Howdy all, >> > I just got a new circular polarizing filter for my ZX7 and was wondering > if >> > there is anythign special I have to do to use it (rotating,etc) or is > this >> > just a "plug and play" filter. Should I use it all the time? Coupled > with a >> > red filter will it work any better or shoudl I just use one or the > other? >> > Thanks - 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 .
