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DPChallenge Forums >> Current Challenge >> allowable filters with basic editing rules?
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04/09/2006 10:45:29 AM · #1
i'm not sure wich filters i can use to comply with the basic editing rules. a simple warming or cooling filter is not mentioned as prohibited or allowed for example. who can tell me in basic english where the boundry lies for filters in basic editing?
04/09/2006 10:47:32 AM · #2
Originally posted by jiribierie:

i'm not sure wich filters i can use to comply with the basic editing rules. a simple warming or cooling filter is not mentioned as prohibited or allowed for example. who can tell me in basic english where the boundry lies for filters in basic editing?


I'm pretty certain you can't use PS photo filters (or equivalent) in basic. You can get the same results that a photo filter will give you by using adjustment layers, however (curves, hue/desat, levels).
04/09/2006 11:22:07 AM · #3
A physical filter (glass or plastic) on your camera is fine.

A Photoshop adjustment which does the same -- alters only the color of the pixels throughout the image -- is fine.

A Photoshop "filter" -- which moves pixels around -- is prohibited, except for the specific sharpening, blurring, and denoise filters mentioned in the rules.
04/09/2006 11:27:51 AM · #4
So a "sepia" filter is ok in basic as long as it is applied to the whole image?

Originally posted by GeneralE:

A physical filter (glass or plastic) on your camera is fine.

A Photoshop adjustment which does the same -- alters only the color of the pixels throughout the image -- is fine.

A Photoshop "filter" -- which moves pixels around -- is prohibited, except for the specific sharpening, blurring, and denoise filters mentioned in the rules.
04/09/2006 11:30:21 AM · #5
Originally posted by kenskid:

So a "sepia" filter is ok in basic as long as it is applied to the whole image?

If all it does is change the coloration to a sepia-tone it should be OK -- that sounds like an "adjustment" rather than a "filter" (an unfortunate choice of terminology IMO).
04/09/2006 11:35:59 AM · #6
Yeah, it just alters the color of the entire image. Instead of the photo filter, add an adjustment layer for hue saturation. Click the colorize check box in the lower right corner, and play with the slides. For sepia, I like the hue 25-40 and the saturation 15-30, depending on the image.

"Only Adjustment Layers (or the non-Photoshop equivalent) may be used. An Adjustment Layer is one that does not contain any pixel data, but rather is a special, non-image layer that lets you experiment with color and tonal adjustments to an image without permanently modifying the pixels. Adjustment Layers must be applied in Normal mode. All other types of layers (including those that contain pixel data or masks) and all other blending methods (modes) are prohibited. Changing the opacity of an Adjustment Layer is permitted."
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