Colour infrared effect with Photoshop Elements ???

Archived from groups: rec.photo.digital (More info?)

Can anybody tell if and how to get near I/R effect using Elements or is CS
the only real way ?

Rick


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Archived from groups: rec.photo.digital (More info?)

On Sat, 18 Jun 2005 23:37:58 -0700, Kevin McMurtrie
<mcmurtri@dslextreme.com> wrote:

>In article <500C3AFEB8AA0@PhotoKB.com>,
> "rick white via PhotoKB.com" <forum@nospam.PhotoKB.com> wrote:
>
>> Can anybody tell if and how to get near I/R effect using Elements or is CS
>> the only real way ?
>>
>> Rick
>
>Just apply some whacky color filters, desaturate, then mess with the RGB
>curves to colorize shadows. Personally, I think putting an IR filter on
>the camera would be easier.

With Photoshop, P. Elements or other software you may get something
that looks a little like (but is not) a false-color IR picture. There
is no way to isolate or amplify real IR data in post-processing. The
only way is by using an IR-pass filter on the camera when taking the
picture.

If you want a slightly more technical explanation: the red channel of
a digital RGB picture records a little IR light mixed with a lot of
red light. There is no way to separate the two in post-processing
because the camera sensor sees both in the same way. The only way to
record IR light without swamping it with red light is to use a filter
that cuts most or all red light (and typically, also green and blue).