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  #1  
Old 20th January 2010, 03:55 PM
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Jacques Jacques is offline
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Default Linear Polarizer vs Circular Polarizer

Hi,
With a 5x4 camera is it better to use a Linear Polarizer?
Jacques
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Old 20th January 2010, 05:41 PM
Richard Gould Richard Gould is offline
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As far as I understand things it does'nt make a difference, the only time it make a differance is with auto focus cameras,but I stand to be corrected,Richard
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Old 20th January 2010, 07:14 PM
Dave miller Dave miller is offline
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Quote:
Originally Posted by Richard Gould View Post
As far as I understand things it does'nt make a difference, the only time it make a differance is with auto focus cameras,but I stand to be corrected,Richard
I say the same. Use the cheapest of the two.
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Old 20th January 2010, 10:02 PM
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I agree with prevous replies - I use both linear and circular pol filters on manual focus cameras, including 5x4. I don't see any difference in the effects.

If you are using auto-focus and manual focus cameras and intend to use the same filter for both, get a circular. If not, get linear since they're usually much cheaper.

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Eddie
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Old 20th January 2010, 11:47 PM
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Thank you guys
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Old 24th January 2010, 04:04 PM
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Martin Aislabie Martin Aislabie is offline
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I saw someone try Linear v Circular Polarisers - stacking two of the same sort & then turning them to produce the darkest effect.

This gives an idea of the degree of polarisation than can be achieved.

The circular ones did produce a noticably darker effect - it wasn't huge but it was clear for all to see.

I think they were using Hoya filters in the test.

Is a circular polariser better value for money - who knows

Martin
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Old 24th January 2010, 04:09 PM
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I read somewhere (I forgot where) that a linear was better because there were less layer of glass. I don't know if it is true and if it makes a difference.
Jacques
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Old 27th January 2010, 01:28 PM
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Martin Aislabie Martin Aislabie is offline
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Hmm.... not sure about that

I think that the Polariser is held in a foil, which is then held in a sandwich between two sheets of glass.

Having destroyed (dropped) several Polariser Filters; I know that both Hoya and B+W are made this way.

Martin
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