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DPChallenge Forums >> Current Challenge >> Changing colors by selective tools allowed?
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 01/31/2006 10:35:27 AM · #1
Will my photo disqualify if I change any object’s color totally (like green to yellow of blue to red) by “Selective Color” tools in PS?

Advanced thanks for giving advice.

Regards,
Rudra
01/31/2006 11:10:52 AM · #2
'Selective Color' doesn't really mean 'selective' in the DPC rules sense. The effect is applied to the whole image, and as long as you're using it this way (and not using a mask or some other spot editing technique) then it's legal for Basic editing.
 01/31/2006 11:23:12 AM · #3


Yes, did it here to make the background yellow instead of pink. Used selective color adjustment layer. Only problem with it, is that it left a pink hue on parts of the jeans.

But, it was legal.
 01/31/2006 12:11:40 PM · #4


Here's another one PERCOM.
This was a "basic edit" challenge also.
I changed the colors to create a duotone look, but left the yellow alone.

Just make sure you apply your color adjustment evenly to the entire picture. It won't effect the areas where the color you are adjusting is not present, but if your adjustment is applied to the entire picture evenly, it is not considered a "spot edit".
 01/31/2006 12:28:49 PM · #5
Originally posted by fotomann_forever:


Yes, did it here to make the background yellow instead of pink. Used selective color adjustment layer. Only problem with it, is that it left a pink hue on parts of the jeans.

But, it was legal.


So you made two selections of the Magenta background and changed the Hue, right?
 01/31/2006 12:47:00 PM · #6
No selections were made. Instead, they used Image -> Adjust -> Selective Color to change the color values for the magenta and red channels (I'm assuming). :-)

Originally posted by _eug:
Originally posted by fotomann_forever:


Yes, did it here to make the background yellow instead of pink. Used selective color adjustment layer. Only problem with it, is that it left a pink hue on parts of the jeans.

But, it was legal.


So you made two selections of the Magenta background and changed the Hue, right?

01/31/2006 12:54:52 PM · #7
Originally posted by bryanbrazil:
No selections were made. Instead, they used Image -> Adjust -> Selective Color to change the color values for the magenta and red channels (I'm assuming). :-)


Correct, no selections were made.

Adjustment Layer --> Selective Color
Selective Color -->
Reds
C: -100
M:-100
Y: +100
Black: +100
01/31/2006 01:07:30 PM · #8
ok I'm not sure I follow....is 'selective color' simply changing everything in that layer that was [magenta] to the new color? You are not tracing (magnetic lasso) or merging layers.....right???

this would be in basic edit?? In Advance Edit would you be able to use the magnetic lasso selecting a area and changing it?

Thanks and sorry for jumping on very confused.
 01/31/2006 02:04:45 PM · #9
Originally posted by dassilem:
ok I'm not sure I follow....is 'selective color' simply changing everything in that layer that was [magenta] to the new color? You are not tracing (magnetic lasso) or merging layers.....right???

this would be in basic edit?? In Advance Edit would you be able to use the magnetic lasso selecting a area and changing it?

Thanks and sorry for jumping on very confused.


That's correct. "Selective color" applies changes to a specific color range within the image. If you use a selection tool (like the lasso), selective color will apply its changes to the specific color range within the selected area. As you have deduced, the first is always legal and the second is only legal in advanced.

The selective color adjustment is VERY useful in basic editing to apply a trace of color to washed-out bright areas by using the "white" range, and can be used to intensify blacks without affecting image contrast elsewhere by using the "black" range.

R.
 01/31/2006 02:09:40 PM · #10
Robert....Thank you....for some reason I always understand when you explain.....
 01/31/2006 02:39:53 PM · #11
Originally posted by dassilem:
Robert....Thank you....for some reason I always understand when you explain.....


Thanks. It's because I used to get paid to explain :-) And even now earn my extra income as an editor of manuscripts, where I untangle other peoples' syntax...

R.
 01/31/2006 02:45:12 PM · #12
I can recognize that ability....in a former profession I was a company trainer. You learn to listen to what the question is and answer in the right level, not over their head and condescending...

I have made a habit of looking to see what you explain in any of the forums...
 01/31/2006 02:51:54 PM · #13
Originally posted by PERCOM:
Will my photo disqualify if I change any object’s color totally (like green to yellow of blue to red) by “Selective Color” tools in PS?

It is my understanding (SC members feel free to correct me. :) ) that any and all color changes no matter how drastic are allowed even in basic rules when applied in a non-selective manner.

Color changes are considered fair game for ANY change and not considered a "major" element for purposes of DQ at DPC.
 01/31/2006 02:54:29 PM · #14
Originally posted by dassilem:
I can recognize that ability....in a former profession I was a company trainer. You learn to listen to what the question is and answer in the right level, not over their head and condescending...

I have made a habit of looking to see what you explain in any of the forums...


That's interesting; I was in charge of "internal education" at a software company for a couple years. I also was editor-in-chief of a now-defunct startup web-based company that was "translating" the law into plain English.

R.
 01/31/2006 02:55:36 PM · #15
Originally posted by stdavidson:
Originally posted by PERCOM:
Will my photo disqualify if I change any object’s color totally (like green to yellow of blue to red) by “Selective Color” tools in PS?

It is my understanding (SC members feel free to correct me. :) ) that any and all color changes no matter how drastic are allowed even in basic rules when applied in a non-selective manner.

Color changes are considered fair game for ANY change and not considered a "major" element for purposes of DQ at DPC.


That's my take on it also, assuming the color changes are made with adjustment tools, not by painting in whole areas of raw color with one of the paint tools.

This image was done in basic editing for the "70s" challenge. Shot with a long exposure and rotating camera, daylight WB in tungsten light. The color shifts were done with levels and curves adjustment layers. Never touched selective color or hue/sat. The image was validated.



R.

Message edited by author 2006-01-31 15:00:45.
 01/31/2006 03:04:42 PM · #16
Originally posted by Bear_Music:
Originally posted by stdavidson:
Originally posted by PERCOM:
Will my photo disqualify if I change any object’s color totally (like green to yellow of blue to red) by “Selective Color” tools in PS?

It is my understanding (SC members feel free to correct me. :) ) that any and all color changes no matter how drastic are allowed even in basic rules when applied in a non-selective manner.

Color changes are considered fair game for ANY change and not considered a "major" element for purposes of DQ at DPC.


That's my take on it also, assuming the color changes are made with adjustment tools, not by painting in whole areas of raw color with one of the paint tools.

Agreed, that is also my take. I'm certain painting tools are not allowed like that in basic reules because it is not over the whole image.

In advanced rules I've frequently used painting tools in a 50% greyscale layer to paint on a "color range" selection. That method does a far better job than say hue/saturation does for adjusting colors and better maintains the integrity of the image in my opinion.
01/31/2006 03:07:04 PM · #17
Originally posted by stdavidson:
Originally posted by Bear_Music:
Originally posted by stdavidson:
Originally posted by PERCOM:
Will my photo disqualify if I change any object’s color totally (like green to yellow of blue to red) by “Selective Color” tools in PS?

It is my understanding (SC members feel free to correct me. :) ) that any and all color changes no matter how drastic are allowed even in basic rules when applied in a non-selective manner.

Color changes are considered fair game for ANY change and not considered a "major" element for purposes of DQ at DPC.


That's my take on it also, assuming the color changes are made with adjustment tools, not by painting in whole areas of raw color with one of the paint tools.

Agreed, that is also my take. I'm certain painting tools are not allowed like that in basic reules because it is not over the whole image.

In advanced rules I've frequently used painting tools in a 50% greyscale layer to paint on a "color range" selection. That method does a far better job than say hue/saturation does for adjusting colors and better maintains the integrity of the image in my opinion.


Yeah, sure; we're talking about selecting areas and completely replacing them with paint. That's a no-no.

R.
01/31/2006 03:15:13 PM · #18
Originally posted by Bear_Music:
Yeah, sure; we're talking about selecting areas and completely replacing them with paint. That's a no-no.

Agreed and besides.. it looks like what it is... unphotographic and unnatural. LOL!
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