Adjust gamma and rotate pictures with GIMP

 by n0ukf
Fixing exposure from insufficient lighting and rotating image from turned camera.

It is quite annoying to see pictures that are too dark to see what's in them. Sideways pictures are also annoying (among other photographic conditions). Fixing the pictures before uploading makes your work look more professional.
 
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Step 1: Download The GIMP

GIMPsite.jpg
If you haven't already, go to the GIMP website to download and install the appropriate version for your OS. Unlike Photoshop and others, The GIMP is free.
iectyx3c says: Sep 21, 2009. 7:18 PM
Nice 'ible.

Remember that GIMP's Gamma is a correction to make images look better for computer monitors, not for printed photos. Here's a simple explanation:

http://www.cgsd.com/papers/gamma_intro.html
n0ukf (author) in reply to iectyx3cOct 26, 2009. 8:16 AM
That coon pic would still be too dark for a print without gamma or brightness/contrast adjustment.
madmanmoe64 says: Jul 9, 2008. 1:40 PM
A Nice intro to using Gimp. You should do instructables on some of the other, cooler features. I did this using the stamp tool. I use that for everything.
me wid shades002.jpgme wid shades001.jpg
bob321 in reply to madmanmoe64Feb 17, 2009. 5:04 PM
How did you do that
madmanmoe64 in reply to bob321Feb 19, 2009. 3:11 AM
select the clone tool. Icon looks like a stamp. Then ctrl click on the area you want to copy. now when using this brush it will copy the area you ctrl clicked on. I used this to copy the poster across, covering my head. If you look closely you can see that the middle column is the same as the right column. If that made no sense I'll have to make an ible for it.
bob321 in reply to madmanmoe64Feb 19, 2009. 1:38 PM
thanks man that helped a bunch i have a question do you know how to make neon style tect in gimp?
madmanmoe64 in reply to bob321Feb 20, 2009. 12:52 PM
one basic way would be: - type your text then press 'path from text' (near the bottom of the tools pane). -Then with this path selected go to >Filters >Alpha to Logo >Alien Glow (or alien neon) This gets the basic glowing effect. You may have to play around with the options to get it how you want
bob321 in reply to madmanmoe64Feb 20, 2009. 2:16 PM
thanks ill try that it really helped do you use blender 3d
madmanmoe64 in reply to bob321Feb 21, 2009. 4:05 AM
No I've never used Blender 3D. But it does look interesting
bob321 in reply to madmanmoe64Feb 21, 2009. 8:17 AM
here is what i did with a special neon affect
instructables.jpg
bob321 in reply to madmanmoe64Feb 21, 2009. 7:32 AM
i tried the neon thing and it works really well
bob321 says: Feb 17, 2009. 5:04 PM
how do you use the stamp tool
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