Gimptalk - Premier Gimp Community: patdavid - Viewing Profile - Gimptalk - Premier Gimp Community

I recently had a chance to finally sit down and shoot a portrait of my friend Mairi, whom I had been wanting to shoot with for some time.

When I did the shoot, I figured it might be interesting to make all of the information I had while doing it available to anyone in as much detail as I could muster.

Here's the final result of the tutorials:



Things were getting a bit long, so I broke up the tutorial into two phases. Here's the first:

The Open Source Portrait (Equipment & Environment)

This first part walks through all of the actual shoot itself. I don't have a fancy studio or lights or anything. Just a clear place to sit in my florida room, a couple of cheap Yongnuo speedlights, and some homemade modifiers (softbox). If I could take a decent photo with just these things, I figured someone with some actual talent could really pull of something nice...



You can see the space I had to shoot in, and the equipment I used (I include enough information to be able to build the DIY softbox if anyone wants to - it cost like $10USD total). Basically everything from beginning to end of the shoot.

The Open Source Portrait (Postprocessing)

Now that the shoot is done, this is where the rubber meets the road. I walk through the RAW development with RawTherapee, and bringing the image into GIMP for skin retouching, background fixing, and color grading.

This one is long, but there's a lot of information to cover...

In a nutshell, this is the file after RAW conversion:


Don't know if this will be helpful to anyone, but here it is. />

I had been following Photoshop instructor Calvin Hollywood lately, with a look at some methods he uses to bring out the details in images that he calls "Freaky Details".

Its basically an inverted color copy of the base image, bilaterally blurred, blended, then the results are used as an overlay layer in GIMP.

We couldn't follow his tutorial previously because GIMP lacked a "vivid light" blending mode, and didn't have a "bilateral blur" available. Luckily, the developers of G'MIC added these options to G'MIC, and the effect is not possible to do in GIMP!

Calvin Hollywood Freaky Details in GIMP

So, I figured I would put these here for anyone that might be interested. If you haven't had a chance to really use it, the Curves dialog will open up a whole new world for color tweaking in your images.

First, the basics (the dialog, how to use it, and some custom presets available for download if you want them):

Getting Around in GIMP - Color Curves Toning/Grading



If you're comfortable with the basics, the second part has a great look at using the Curves dialog to match/emulate the colors from another source. So if you want colors to match between two images, this is a way to approach it:

Getting Around in GIMP - More Color Curves (Skin)



The second method uses curves, along withe sample points to really give you a good look into what the colors are doing in your image, along with a method for adjusting to curve to match another color sample.

Hello all!

I started writing a tutorial back in November 2012 attempting to take a comprehensive look at all the methods at our disposal for converting an image to B&W (grayscale) in GIMP. I had a workflow myself, but was talking to others about different methods that they used, and figured it might be helpful for newcomers to get an overview of all the different ways to approach the conversion.

It's freaking February, and I just finished writing the last part...

So, I figured I would drop in and offer it up to anyone that might be interested.

There are 5 total parts to the tutorial, and each section covers a different method. If you're masochistic, you can start at Part 1 and read through them all. Otherwise there is a brief overview of what each part contains in any of the posts.

I'll try to summarize here, with links:

Getting Around in GIMP - B&W Conversion (Part 1)
This is an introduction, and a look at using the straight Desaturate command in GIMP (along with how the various modes technically work, like Lightness, Luminosity, and Average).

Getting Around in GIMP - B&W Conversion (Part 2)
Part 2 looks at using the Channel Mixer to convert to grayscale, and how the RGB mixture effects the results. I also included a short table listing some common "formulas" to emulate old B&W films (and some Script-Fu as well).

Getting Around in GIMP - B&W Conversion (Part 3)
This part looks at using Color Decomposing, and investigating each of the color channels to use as a base for the final B&W image. Also includes a Script-Fu for automating the decomposition to the most useful channels.

Getting Around in GIMP - B&W Conversion (Part 4)
Pseudogrey, GEGL c2g, and using layer blending modes to convert the image.

Getting Around in GIMP - B&W Conversion (Part 5)
Finally, putting all of the previous options together, and picking/choosing the portions that you like best for a final composite B&W image. Basically layer masking portions you like from any of the previous methods. Film grain, and me begging for attention.

Well, those are all of them. Hopefully they might prove useful to someone! As always, feel free to hit me up with questions/comments/rants.

Hi all,

I just finished writing up a walkthrough of using Resynthesizer + Heal Selection for removing selections from images through sampling textures nearby, and thought I'd share it.



I basically revisited the Heal Selection script after getting tired doing large cloning/healing areas by hand, and I was personally quite impressed with the results. I figured it might be helpful to those who might not already be familiar with the plugin...



As always, I'd love to hear any feedback/thoughts/criticisms. I'm prone to screwing things up, so if you notice something please let me know!

Anyway, if you have a few minutes, hop over and have a look:

Getting Around in GIMP - Heal Selection (Resynthesizer)