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Circular Polarizer

29 Apr

In previous post, I mentioned that using a circular polarizer to make the blue sky bluer. In case you’re wonder how effective it is, here are some examples.

The CP I have was made by Nikon. It’s very thin and bright, only cuts down the light by about 1-1/3 f-stop (filter factor). It doesn’t have the warming effect as the Singh-Ray does. But it’s much less expensive, $75 vs $210 at B&H. It’ll be insane for me to spend $210 (US) on that, after all I’m just a hobbyist and the kit lens costs less than $200.

Below, the one on the left is with polarizing effect at the minimum, and the right at the maximum. It may not be always this dramatic and really depends on where the sun is in relation to your location. Draw a line between the sun and the subject, another line between the subject and you. If the angle is at 90 degree, you will see the most dramatic changes. And of course, the filter has no use on artificial lights indoor. The time of the day also plays an important factor — after sun rise and before 11am, after 3pm and before sun set. At noon time, you probably won’t see too much differences, not to mention on cloudy days.

These two photos were taken in Venice, 9am in the morning and 12 seconds apart.

Copyright © 2011. Jenson Yu. All rights reserved.
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Posted by on April 29, 2011 in Photography Techniques

 

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