Advice on polarized lenses


oaheey

New Member
Jul 13, 2009
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#1
Hi guys im looking for some advice on polarized lenses.

What are the benefits of using polarized lenses on say a wideangle lens versus a telephoto zoom lens?

Also, does anyone have any recommendation for a particular brand?

Thanks guys and please pardon my "noobness".

Joshua
 

LexLim

New Member
Feb 25, 2009
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Gombak
#2
Hi guys im looking for some advice on polarized lenses.

What are the benefits of using polarized lenses on say a wideangle lens versus a telephoto zoom lens?

Also, does anyone have any recommendation for a particular brand?

Thanks guys and please pardon my "noobness".

Joshua
It's called a polarizing filter
 

wildcat

Senior Member
Sep 8, 2004
3,269
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Bedok
#3
If you need to ask, then you don't really need it. It's another BBB virus someone inflicted on you.

Anyway a minor correction, but I believe you mean a polarising filter?
 

ahbian

Senior Member
May 23, 2006
2,467
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#6
polarizer filter + lens = polarized lens :think:

Anyway, choice of lens (wideangle vs telephoto) should be made in consideration in whichever suits your subject. There have been discussions of "uneven" polarization (don't know the official term), if when we use the polarizer on the wide angle.
 

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oaheey

New Member
Jul 13, 2009
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#8
Like i said guys, pardon my noobness.

I believe i meant polarizing filters.
 

Dream Merchant

Moderator
Staff member
Jan 11, 2007
9,659
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#9
TS is not wrong.

Technically a filter as we know it is also referred to as a lens because it is a lens. For all intent and purpose, it serves the same function, so the terms 'filter' and 'lens' are interchangeable, and have been used in the photographic industry, even though the more technical term normally used is 'objective', and in most places, the majority refer to what you're talking about as a 'filter' although in some parts of Europe, to a much lesser extent, it's also referred to as a 'lens', usually with technical specs stated before, e.g., close-up lens, polarizing lens etc.

The use of a polarizing element in front of your camera lens, whether a wide angle or telephoto, serves the same purposes - to alter the polarization of light waves.

In more common photographic applications, this is done to either minimize or eliminate reflections off non-metallic surfaces, or in applications such as landscape photography, to darken or deepen blue skies.

There are other scientific and industrial applications of polarized light, although less common to ordinary folks like you and me.

And yes, further reading is recommended. Google 'Polarized light and filters in photography'.

If you really want to know what's going on: http://www.physicsclassroom.com/class/light/U12l1e.cfm

Hope this helps.
 

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oaheey

New Member
Jul 13, 2009
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#10
Thanks alot Dream Merchant,

I tend to do quite abit of outdoor photography in bright sunlight settings. Some article i read recently gave me the impression that polarized filters when used, increase the contrast of pictures and therefore tend to darken/deepen skies. However I was puzzled as to whether the polarizing filter would only darken the blue parts of the sky or also the white portions, i.e. the clouds.

Thanks for clearing that up.

J
 

justarius

Senior Member
Nov 9, 2003
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#11
The polariser increases contrasts by filtering out unwanted reflections and cutting down on stray light (stray wavelengths). Your white clouds will remain white =)
 

night86mare

Deregistered
Aug 25, 2006
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www.pbase.com
#12
What are the benefits of using polarized lenses on say a wideangle lens versus a telephoto zoom lens?

Also, does anyone have any recommendation for a particular brand?

Thanks guys and please pardon my "noobness".

Joshua
that is a very weird first question you have. using CPL(circular polariser) on wide angle lens or telephoto lens will yield same effect.

in fact you should take note of the fact that for wide angle lenses you have to watch out for what is known as UNEVEN POLARISATION, google will help you a lot with understanding what this is.

hoya is decent brand.
 

Blur Shadow

Senior Member
Sep 17, 2005
4,886
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#13
It's back to physics again. Polarization will be the same for both wide-angle and tele lenses.
 

mintaka

New Member
Jun 6, 2010
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#14
hello, may i know where to get linear polarising filters?
 

Diavonex

Senior Member
Sep 23, 2008
3,641
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Admiralty
#15
With polarising filter



Without polarising filter



With polarising filter



Without polarising filter

 

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Diavonex

Senior Member
Sep 23, 2008
3,641
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Admiralty
#16
polarizer filter + lens = polarized lens :think:

Anyway, choice of lens (wideangle vs telephoto) should be made in consideration in whichever suits your subject. There have been discussions of "uneven" polarization (don't know the official term), if when we use the polarizer on the wide angle.
You'll get weird effects with a polarizing filter on ultra-wide angle lens.
 

Oct 2, 2006
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16
#18
sorry TS borrow your tread. may i know what is the different between multi coated filter and polarized filter. i am using vitacom multi coated uv filter. i tried to get a clear blue sky but the result is is not as blue as what i am expected

 

Diavonex

Senior Member
Sep 23, 2008
3,641
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Admiralty
#19
You need polarising or GND filter to get nice blue sky; sample below taken with polarising filter.

 

Oct 2, 2006
254
0
16
#20
so what is the different between these two? i thought multi coated is able to reduce the reflection but not sure about the blue sky. is there any polarized filter able to attach to my existing filter? sorry i am a newbie please pardon me thanks
 

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