turning filters

Sparkles33

Sparkles33

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Nattelie
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So far it's just been the luck of the draw and I don't really know what I'm doing....but I really like the polarising filters that I bought.

Anyway, I know that when you turn it one way it gets darker and the other way is lighter....I just don't know which is which and it's just been trial, error and luck of the draw.

So, I'm asking here how far and which way to turn :help: before I go batty and get upset with myself for not understanding it yet.

Please could someone explain? :$
 
MagicMynx said:
So far it's just been the luck of the draw and I don't really know what I'm doing....but I really like the polarising filters that I bought.

Anyway, I know that when you turn it one way it gets darker and the other way is lighter....I just don't know which is which and it's just been trial, error and luck of the draw.

So, I'm asking here how far and which way to turn :help: before I go batty and get upset with myself for not understanding it yet.

Please could someone explain? :$
Click to expand...

As far as I know - they'll turn all the way around, there are no "stops". All the one's I've owned have anyway!

It's not so much darker and lighter (although this can be seen) - as you're turning them, they are cutting reflected light from certain angles from your subject, hence the ability to reduce reflections from some surfaces if the angles are right.
 
Turn it and look through the viewfinder to see if it gets brighter or darker but pay more attention to the strength of the reflections in the image. You'll see the effect of the polariser through the viewfinder as you turn the filter.
 
Have a read of THIS, Explains it perfectly!
 
Polarising filter only has two 'settings' of rotation - zero and 90 degrees. In other words, when you've found the position of maximum polarisation, turning the filter a further 90degs will be minimum, then at 180 degress it will be at max again, and at 270degs back to min.

That's a good link :thumbs: On the last diagram at the bottom with the water, if the water was mirror smooth, the optimum angle of polarisation would be at 37degs from the surface.
 
MagicMynx said:
Thanks hoppy, you're a star x
Click to expand...

You're not too bad yourself hun ;)

Does that link metion metallic surafces? If you're playing with killing reflections, polarisers don't reduce reflections off bare metal. Water, glass, paint, shiny leaves, varnished metal etc, but not bare metal - something to do with light being electro-magnetic radiation :)
 
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