Circular Polarizers, A Filter You Need

Re: Circular Polarizers, A Filter You Need

Bob Salomon wrote:
> In article <G4WdnRPxh-gJRiTbRVnyugA@giganews,com >,
> "Fat Sam" <samandjanet@knox.orangehome.co.uk> wrote:
>
>> But I've used both the linear and the circular polarisers on my
>> digital and I honestly can't see any difference in the results when
>> I compare the two.
>
> Nor should there be if they are the same quality. But under some
> lighting conditions a linear polarizer will not let the AF or the AE
> or both work properly if your camera has a beam splitter in the
> optical system. If you have a camera without a beam splitter then you
> have no reason to use a circular polarizer.

How would I find out if a camera has a bean splitter?
Serious question with a genuine reason for asking, as I'm planning to
upgrade to a DSLR from my Fuji S5600 as soon as I have the pennies gathered
up.

Re: Circular Polarizers, A Filter You Need

In article <U-qdnTUZ6OmumCfbRVnysAA@giganews,com >,
"Fat Sam" <samandjanet@knox.orangehome.co.uk> wrote:

> How would I find out if a camera has a bean splitter?
> Serious question with a genuine reason for asking, as I'm planning to
> upgrade to a DSLR from my Fuji S5600 as soon as I have the pennies gathered
> up.

The simplest way is to just ask tech support for the camera manufacturer
if the camera requires a circular polarizer. Or look at the
manufacturer's accessory catalog and see if they sell a linear or a
circular for it.

The last resort is that a circular polarizer works with all cameras that
it can attach to, analog or digital or video, and will work properly
under all lighting conditions.

If in doubt, and you want to make sure just buy the circular one. But
get a good one that is properly multi-coated on both sides.

--
To reply no_ HPMarketing Corp.

Re: Circular Polarizers, A Filter You Need

Both polarizers work the same way, just the circular has a second layer
to depolarize the resulting light. The polarizing part does the same
thing, so there should be no difference, all other things being equal.
However there are different materials used and so they can vary
significantly between brands and even within brands if the manufacturer
has changed process.

Some cameras will be more sensitive to linear polarization than others,
but if you were buying now it is probably not worth the risk and just
get a circular one.

Cheers,

Wayne

Wayne J. Cosshall
Publisher, The Digital ImageMaker, http :// www .dimagemaker,com /
Blog http :// www .digitalimagemakerworld,com /
Publisher, Experimental Digital Photography
http :// www .experimentaldigitalphotography,com
Personal art site http :// www .cosshall,com /



Fat Sam wrote:
> Wayne J. Cosshall wrote:
>> Hi All,
>>
>> I've written the first of a series of articles on the use of real
>> camera filters with digital photography. The first is on the circular
>> polarizer filter:
>> http :// www .dimagemaker,com /article.php?articleID63
>>
>> Cheers,
>>
>> Wayne
>
> I have a circular and a linear polariser. I was told that I would be better
> to use the circular polariser on my digital camera, as it would give better
> results.
> But I've used both the linear and the circular polarisers on my digital and
> I honestly can't see any difference in the results when I compare the two.
>
>

Re: Circular Polarizers, A Filter You Need

Actually I should add that the camera manual will often specify whether
a circ. pol. is needed with a particular model. If not, tech support or
the support pages on their web site should be able to tell you.

Cheers,

Wayne

Wayne J. Cosshall
Publisher, The Digital ImageMaker, http :// www .dimagemaker,com /
Blog http :// www .digitalimagemakerworld,com /
Publisher, Experimental Digital Photography
http :// www .experimentaldigitalphotography,com
Personal art site http :// www .cosshall,com /



Wayne J. Cosshall wrote:
> Both polarizers work the same way, just the circular has a second layer
> to depolarize the resulting light. The polarizing part does the same
> thing, so there should be no difference, all other things being equal.
> However there are different materials used and so they can vary
> significantly between brands and even within brands if the manufacturer
> has changed process.
>
> Some cameras will be more sensitive to linear polarization than others,
> but if you were buying now it is probably not worth the risk and just
> get a circular one.
>
> Cheers,
>
> Wayne
>
> Wayne J. Cosshall
> Publisher, The Digital ImageMaker, http :// www .dimagemaker,com /
> Blog http :// www .digitalimagemakerworld,com /
> Publisher, Experimental Digital Photography
> http :// www .experimentaldigitalphotography,com
> Personal art site http :// www .cosshall,com /
>
>
>
> Fat Sam wrote:
>> Wayne J. Cosshall wrote:
>>> Hi All,
>>>
>>> I've written the first of a series of articles on the use of real
>>> camera filters with digital photography. The first is on the circular
>>> polarizer filter:
>>> http :// www .dimagemaker,com /article.php?articleID63
>>>
>>> Cheers,
>>>
>>> Wayne
>>
>> I have a circular and a linear polariser. I was told that I would be
>> better to use the circular polariser on my digital camera, as it would
>> give better results.
>> But I've used both the linear and the circular polarisers on my
>> digital and I honestly can't see any difference in the results when I
>> compare the two.
>>