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DPChallenge Forums >> Tips, Tricks, and Q&A >> Challenge Rules for a Non-Photoshop User
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03/10/2003 10:52:39 PM · #1
Gooday Everyone!

Here's what I want to do: I want to use a picture and superimpose it over a layer of the same picture that has be blurred a little, to create this "glowing" effect that is particularly striking when the picture has high contrasts.

Is this DPC-legal? The rules call for using "adjustment layers" only, and layering can only be done in "normal" mode. What exatly is an "adjustment layer"? What is a "normal mode"? What is a "mode"? Are these all Photoshop terms? (I don't use photoshop....yet.)

Thanks a lot!
calaille
03/11/2003 02:16:01 PM · #2
Hi Calaille, in PS, an adjustment layer is one that is used on top of the original layer to allow you to adjust the layer's brightness & contrast, levels, color balance, etc. That layer's opacity can then be adjusted up and down until the best result is found. I don't use adjustment layers, I make those adjustments right on the original, usually. Normal mode means there are no special blending properties to the layer such as darken, lighten, soft light, hard light, multiply, and so on.

In your case, superimposing a layer onto the original is the same thing as an adjustment layer. Although, I don't know about blurring effects, sorry. I do hope I was able to help you somewhat.
03/11/2003 04:10:12 PM · #3
Thanks joanns!

Perhaps they just don't want us to superimpose two layers which are completely different from each other, like layering a picture with a layer that is completely black with a white center, which would increase the emphasis on the center of the picture, for instance. It would make a lot of sense if it's not allowed, since it would have more or less a similar effect as dodging and burning.

You're right, in my case it would be the same picture. So I guess the question remains....

Calaille
03/11/2003 05:14:03 PM · #4
Not sure if this is what you mean, but... When you say superimpose, it sounds like you mean using 2 pictures (ie-same picture/angle, etc, but shot at a different apertures, etc.)...using 2 seperate pictures is illegal the way I read it. If you are using the same picture/file, duplicating the layer (for an adjustment such as hue/saturation, levels/curves, etc.), then applying blur to one of the layers (all of the picture) and adjusting opacity, without changing it from its normal (ie-darken, multiply, etc.) setting...sounds legal to me. Usually just need to remember...if it is applied to all the pixels in the photo, it is most likely legal. But, I imagine there are exceptions.

tracy
03/11/2003 06:23:04 PM · #5
Originally posted by dacrazyrn:

...if it is applied to all the pixels in the photo, it is most likely legal.

tracy


I tend to lean towards that same philosophy too!

Thanks,
calaille.
03/11/2003 06:47:07 PM · #6
I'm not sure if a duplicate layer really is an adjustment layer - it isn't listed under 'New Adjustment Layer' in PS. An adjustment layer doesn't create a duplicate for you to work on, it just applies your changes in the safety of a seperate layer.

I'd wait for an admin to give the final word.
03/11/2003 07:36:24 PM · #7
Hmmm, interesting opinoins. I would have just assumed that it was illegal, but the arguments for "legal" make sense. Admins?
03/12/2003 04:03:39 AM · #8
As described, not DPC-legal.
NOTE: This is my personal but educated opinion. For a definitive answer, submit your question directly to the site admins using the "Contact" link under the "Help" menu. You can reference this thread if you don't want to repeat everything.

An adjustment layer is one in which the settings for tone/levels/contrast etc. are held in a separate layer which can be applied non-destructively to the image. That means the image data is not changed until the image is printed/exported to a different format.

Combining two layers containing pixels, with or without different effects or opacities -- even if from the same source image -- is not allowed under normal DPC rules.
03/12/2003 04:20:43 AM · #9
I do not think it would be legal. In Photoshop if you want to superimpose a layer so that the layer beneath is visible you have to change the blending mode - this is illegal under DPC rules. Even is you manipulate the layer opacity and then flatten, the original image pixels will be affected.
03/12/2003 10:50:35 AM · #10
Admins?

PS - Thanks to all who tried to shed some light on the matter.

calaille.
03/12/2003 11:03:56 AM · #11
I have submitted a link to this thread to the admins. They are busy with some coding issues right now.

I suggest eschewing any editing technique you cannot immediately tell is "DPC-legal" until you find out otherwise...
03/12/2003 01:23:14 PM · #12
Originally posted by GeneralE:

eschewing ...

Bless you

(sorry, I couldn't resist)
03/14/2003 12:39:06 AM · #13
All disqualifications (and therefore interpretations of the rules) are voted on by the site council, so for me as an admin to answer this question has no more validity than any of the site council members making their position known. That said, I would vote this illegal. In your second example of a 2nd layer of a dark image with a white center, that is definitely illegal. Your submission must be made from one single photograph.

Drew
03/14/2003 01:01:08 AM · #14
Alrighty then. Pretty straightforward.

Thanks for your input Drew.

calaille.
03/14/2003 01:09:55 AM · #15
since drew is putting the pressure on...I'd also vote this not legal. I thought I'd put in my 2 cents so you can get an idea of the outcome if you were to submit said technique.
Ok, I'm REALLY going to bed THIS time.
~Heather~
03/14/2003 12:37:32 PM · #16
I would also vote not legal, for the reasons already brought up.
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