View Full Version : Polarizing lens
Webguy
06-23-2007, 02:51 PM
<div>Occasionally, I need a panoramic photo that depicts one of the school districts that I work for. It is not unusual, even on a clear day, to find distant hills and mountains a little hazy, to a lot hazy. I bought a Hoya multi-coated cir-polarizing lens for my d50 in the hopes that it would overcome some of the hazy. I am under whelmed with the results. I can barely see any difference at all between a filtered and unfiltered shot. I certainly don't see the difference shown on the Hoya lens case. Is this just a case of the marketing levels being way ahead of the production levels, or am I doing something wrong?</div><div> </div><div>Bob</div>
drh681
06-23-2007, 03:30 PM
<div>well polarizing is not going to be even across a panorama. polarizers work best at 90 degrees angle to the sun...</div><div>at mid-day during the summer you might get a good effect, but the winter months have more sun angle and that will reduce your options.</div><div>and to make the polarizer "work" you need to turn the outer ring while you look through the viewfinder.</div><div>polarizing also will not remove haze caused by particles in the atmosphere, though it will deal with the light being reflected by those particles...</div>
Lazy_Eye
06-23-2007, 06:16 PM
<div>You need a haze filter, not a polarizer. They are made to reduce the scattering effect UV light, which appears as obscuring haze. Make sure it is actually a haze filter, which is not the same as a skylight filter. There are several grades but the higher grades are very expensive and are made primarily for ENG video cameras. Digital SLR's shouldn't need one since they already have a "hot" filter, which is also meant to filter out UV. </div>
Webguy
06-23-2007, 06:22 PM
<div>Thank you, I did not consider that the angle of the sun might play a part in this.</div><div>Bob</div>
Webguy
06-23-2007, 06:24 PM
<div>Should I look for any particular manufacture for the haze filter?</div><div> </div>
DrJalapeno
06-23-2007, 07:19 PM
<div></div><div>Tiffen makes two different strengths of haze filters (more info. <a target="_blank" href="http://www.2filter.com/tiffen/tiffenfilterinfo.html">here</a> and available at <a target="_blank" href="http://www.adorama.com/Search-Results.tpl?page=searchresults&searchinfo=tiffen%2 0haze">Adorama</a>), but honestly, I don't think that's going to help you.</div><div>Forum member Landscaper recently posted an explanation of the two different types of haze present which I found interesting--</div><div><hr></div><div> </div><div><em>"There are two kinds of "haze." There is water vapor haze, caused by high humidity. And there's "smog," which is caused by suspended dust and dirt in the air. UV and polarizing filters can reduce water vapor haze. So will other on-camera and post processing techniques. Those, however, will do nothing to diminish smog."</em><br></div><div><hr></div><div> </div><div> </div><div> </div><div> </div><div> </div><div> </div><div> </div><br><br>Message Edited by DrJalapeno on <span class="date_text">06-23-2007</span> <span class="time_text">06:21 PM</span>
<div>On the other hand, haze in the distance is a plus factor; it enhances the feeling of space and distance in the picture.</div>
canonist
06-24-2007, 07:39 AM
<div>Yep, you need a uv haze, but like stated, it may or may not help you.</div>
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