"AAvK" wrote in message
I cannot tell exactly what you are trying to achieve, but I will assume you want the effects with color images. CS2 has color filters under Adjustments.
If you are applying the same to B&W, then it is best to go to the RGB channels to adjust colors.
hhmmm... you don't know SLR photography? A sky filter is made of glass placed within a metal ring which threads into the front of a lens. The "sky" filters are strengths of "1A" and "1B".
Why only "SLR" photography? Fixed lens cameras also suffer from the "problem" you describe.
If shooting long distance against distant buildings and mountains, massive atmosphere between you and your subject, the atmosphere does us a sarcastic favor and gives a nasty blue hue to your film, or camera CCD/CMOS.
Colour perspective /Spatial separation. The brain compensates, cameras don't.
Have you tried shooting in RAW or with different white balances (cloudy in your example)?
And it comes out clearly in the resulting print/digital file.
Shouldn't do if you are using PS correctly , adjustment layers etc.,
The sky filters correct this problem by giving a coloration which counteracts the blue hue. Concerning Photoshop, or digital graphics work in general, this photography issue isn't addressed anywhere online that I can find.
Maybe this is because this form of correction is no longer the problem it used to be when using PS/digital cameras. The trouble with using any piece of glass in front of any optic is that it can introduce other problems, loss of quality, flare,etc., Also, any correction it provides is applied to the whole image, not always desirable. A "pink" filter used to correct a blue/hazey background will also affect foreground whites for example.With PS, you can apply any correction that a filter provides and you can apply it selectively, just to one part of an image or different strengths to different parts of the image.
The only use for the aforementioned filters are to provide protection to the lens front element. Saying that, I use a circular polarizer on all my landscape shots, as I found that it is quicker to get the effect I want in camera, than post camera.
MH