check this one, as i am still looking for the others
i saw.
http://www.smashingmagazine.com/2011/03 ... technique3

thanks guys, these are so much fun to learn

these are the others i saw
http://helpx.adobe.com/photoshop/using/ ... image.html
http://www.computer-darkroom.com/tutori ... al_3_1.htm
i will keep looking but i have not checked
the content of any others for now so hopfully
they will be of some use.
thank you
tin!
have a good evening **

thanks these should keep me busy for a while
good night to you.

some practice using this tutorial's technique (Before on left, after on right)
Images of my uncle standing by the world's tallest totem pole (or so it says on the large rock) in Victoria, BC Canada

I am interested in producing this in GIMP
http://www.smashingmagazine.com/2011/03/09/useful-photoshop-tips-and-tricks-for-photo-retouching/#technique12
Between this tutorial and other pages that describe how to get exclusion mode I got so confused.
Can anyone describe in simple steps in GIMP? Thanks in advance.

Bottom layer: Copy
Top Layer: "Difference" layer blend mode
Top layer: Add layer mask
Layermask: Paste (and anchor)

thanks saulgoode
But I am still confused. I am guessing you're telling me how to simulate "exclusion" mode?
The whole process of mentioned article confuses me not just the exclusion part although that adds to the confusion.

I tried again i don't know if i got it or not
original

retro (tried and confused)

I appreciate the link!

I actually have a page that lists all of my tutorials and writings that might lead to more ideas here:

patdavid.net: Getting Around in GIMP

I'd pay particular attention to color grading & color grading skin. I include links to a few different GIMP curves to do some film emulation that I got from Petteri Sulonen a while back (I have since replaced them mostly with the different film emulations we put into G'MIC instead).

Yet another reason I hate so many tutorials out there that don't bother to be a little more complete with their examples (particularly before/after images to allow one to replicate a process and more easily check results).

(In that spirit, here's my .xcf.bz2 for the below example: https://www.dropbox.com/s/uijemk000pnih ... le.xcf.bz2 )

Here is an example of running that "retro" look tut on one of my images:



Starting with the base image, duplicate it.
Apply yet another orange/teal color curve ("S" curve Red/Green, inverted "S" curve Blue).
Add a new layer over it. Fill with #000066 (deep blue).
Set layer mode to "Exclusion" (I cheated and just used G'MIC for this).
Create a new layer from visible (again, I just had G'MIC output a new layer for me).
Set the new layer blend mode to "Soft Light" (or "Overlay").
Adjust opacity to taste.

A little harsh for me, and I really think you can skip the "Exclusion Blue Layer" step entirely (it's really only going to add a bit more yellow in the upper mids/highlights, and deepen the blues in the shadows).

I wouldn't really call it a "retro" effect, as that's not the impression I get looking at the results (even if they may be pretty sometimes).

Could be worse - combine this with lifting the black point to about 15-20, and BAM! instant hipster retro images! This seems to be a ridiculously popular look at the moment (I blame the VSCO presets and Instagram. ).

Pat David is on Gimp Chat?
Awesome.
Thanks PD (hehe also stands for police department)

Hear, hear.

I've yet to see an example of exclusion masks that uses anything but a solid colored mask layer, a technique which produces a result that should be more controllably and intuitively achieved by adjusting the tints with Curves or Color Balance (or myriad other approaches).

I was playing a bit with the "retro" effect of PatDavid .
Follow the steps was easy. Especially when he indicated where to find the "Exclusion" option.
Thx PatDavid!

Was impossible to create an RGB curve to produce the same result.

Then came the following questions:
Would it be possible having two images, draw the curve that changed the first image in the second?

As example of PatDavid above, we have the second image (curve) and the original. It would be possible to detect and display which curve was drawn?

A script could do this?

Thx

Are you asking about my curves in particular? It's a fairly common Red/Green channel "S" curve, and Blue channel inverted "S". Adjust to taste.

To directly answer your question, on 32-bit GIMP, el samuko wrote a fantastic "Get Curves" plugin that will reverse engineer the curves based on a before/after image:

https://sites.google.com/site/elsamuko/gimp/get-curves

Beware that the images are identical in cropping/location (it works on a pixel-by-pixel basis and computes the shift for that value).

Not really. Although I have tried several times to get the exact same result.


I did this and got good results. Sarah is a beautiful model, and any RGB curves she still lovely.


Conferring the elsamuko page, it took me to decide which option to download. So I opted for elsamuko-get-curves-w32.zip

But how to install it? (Files are not. Scm or. Py)


I'm curious to test this plugin

Thank you very much David!

If I'm not mistaken, you'll just need to drop it into your "Plug-Ins" folder (Edit -> Preferences -> Folders -> Plug-Ins to find out where that is).

After that I think it's under the "Colors" menu.

(and just Pat is fine.... )

Works as I wanted!
Tested and managed to reverse the "curves" image back to its original appearance!

I had saved one of the presets I played before, and compared to the curve used in the image "curves", the difference was not so well.


Only then discovered that the layer "curve" was with the opacity at 27.1, giving the brightness that I could not get through the curves.

A very nice plugi, Again thx David