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DPChallenge Forums >> Tips, Tricks, and Q&A >> Digital DR Equivalent of Polarizing Filter
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Showing posts 1 - 7 of 7, (reverse)
AuthorThread
Canon EOS-300D Rebel
Canon EF 28-200mm f/3.5-5.6 USM
 08/07/2002 07:37:57 PM · #1
Just wondering, how would you say you get the same fx from a digital picture in photoshop as you did with a PF on a reflex...?

thanks in advance.
Canon Digital IXUS
 08/07/2002 08:15:57 PM · #2
Since the polarization information isnt recorded by the camera sensor it isnt really possible.

Though you might be able to replicate some of the effects with some work, but others I just don't see how they would be possible.
Minolta DiMAGE 7i
 08/07/2002 10:41:51 PM · #3
A Polarizing Filter is one of the few effects that can't be replecated in Photoshop. Thats because of the way the PF filter cuts out light that is polarized on a diferent angle... the camera CDD can't tell which way the recorded light is polarized and there is no current way to record it digitally....so you cannot edit the information based on its polerization.

However sometimes certain colors record more information than others so look at the different color channels and see if you can find a colour layer with the detail you want and inhance.. try the channel mixer.

So don't expect to make any holograms with your digicam CCD without multiple shots and some fancy software :) hehe... don't worry if you don't understand this last statement...
Sony Alpha a6400
Sony E 16-50mm f/3.5-5.6 PZ OSS
 08/07/2002 11:22:55 PM · #4
I have been playing with this and I think that a polarizer can be immitated with a little work... it will NOT duplicate a polarizer for obvious reasons... u can't remove reflections and glares without the actual polarizer, but you can increase the color saturations to immitate that aspect of a polarizer...

Canon EOS-450D Rebel XSi
Canon EF-S 18-55mm f/3.5-5.6 IS
 08/08/2002 01:21:34 AM · #5
Whats a Moderator?
Canon EOS-5D
Canon EF 17-40mm f/4.0 L USM
 08/08/2002 07:33:25 AM · #6
Originally posted by anarchos_punk:
Whats a Moderator?


Someone with middle-of-the-road views.

John
Olympus C-3000Z
 08/08/2002 08:22:30 AM · #7
LOL
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