Polarizing filters can only minimize the effects of reflection, not eliminate them altogether, although in some cases, the effect is quite big so much so very little is left of the reflection from a particular scene. These four photos below are more examples of how effective the Canon PL-C filter has managed to cut down on the reflections in sight. In the first pair, the PL-C reduces the reflection by about 90 per cent. Reflection abound Reflection minimized     Reflections abound Reflections minimized From the second pair of photos (above), the PL-C also manages to cut down on the reflections from the pond, resulting in increased contrast of the overall scene. However, depending on how one looks at the photos, the non-corrected shot can be at times much more natural and pleasing to the viewer's eyes as compared to the one with polarizing effect activated. Making skies more blue with the white clouds standing out and increasing the contrast of a dull scene are other features of the polarizing filter, whether those of PL-C or Linear type. The first two photos below of the white clouds show exactly the effects. In the first photo, the PL-C effect was not activated and the clouds as well as the blue sky's color were weak. Once the PL-C effect was activated, the clouds took on a better contrast and the sky became more blue. Without PL-C With PL-C activated     Without PL-C With PL-C activated From the two other scenes (above), one can just see how dull the photo before the correction was made. After the PL-C effect was activated, the situation improved although nothing much could be done to the overall bluish tone caused by heavy overcast skies. The polarizing filter, as its name suggested, polarized the light rays, when shot from a certain angle, usually at 45-degrees, thus reducing effects like reflections and increasing the overall contrast in the scenes. When using a polarizing filter with an SLR camera, the photographer can see the effect immediately through the viewfinder, as opposed to a compact point-&-shoot or high-end, 35mm rangefinder versions. This is very important as one will never be able to distinguish the overall polarizing filter's effect if one can't see them taking place right before his/her eyes through the SLR camera's viewfinder. << Back to Main . 1 . 2 . 3 .