Polarizing Filters?
- This topic has 14 replies, 7 voices, and was last updated May 4, 2007 at 1:13 pm by
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Posts
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I am in need of a polarizing filter not only for Baja, but Alaska as well.
www.mattjonesphotography.com
Matt,
If you have an autofocus camera you need a circular polarizer, the size you need should be written on the inside of your lens cap.
Matt,
One quick tip for using the polarizer when you get it:
Make a “gun” with your hand- index finger out and thumb up.
Also, if you have many lenses with different front element sizes, buy the size that fits the largest (77mm is a good size to buy) and step-up rings for the smaller, 62mm, 67mm, 72mm, etc.
OK, I was wanting to ask a few questions along this line as well…I will use this thread to do so.
1. I just bought a polarizer for my DSLR.
Seafood,
Just remember that the greatest degree of polarization will occur at 90-degree angles from the light source, the sun. Zero polarization will occur when aiming directly at or away from the sun.
The polarizer works just like your polarized glasses – it removes glare from non-metallic surfaces such as foliage, water, and water vapor and other particulates in the sky (helping eliminate haze).
A polarizer will hold back 2 to 3-stops of light, depending on the brand. This will enable you to use a shutter speed that is 2 or 3 stops slower – all other things being equal.
2. Zach, could you try and explain your thumb and index finger analogy again…I cant quite grasp it.
I think it was my thumb/index finger thing that confused you.
This is a guess-and-check thing; you can do the same with your polaroid sunglasses by simply tilting your head.
Note: while this can be very interesting and quite entertaining, it will earn you all sorts of funny looks.
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