Re: [Gimp-user] double exposure

[Richard Gitschlag <strata_ranger hotmail com>]

Generally speaking, in terms of the resulting brightness when you blend two layers, Addition > Screen > Lighten Only.

The online GIMP manual explains layer blending modes in more detail (albeit not in the same order they are shown in actual GIMP 2.8's dropdown menu of blending modes :\  )

http://docs.gimp.org/2.8/en/gimp-concepts-layer-modes.html

-- Stratadrake
strata_ranger hotmail com
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Numbers may not lie, but neither do they tell the whole truth.

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Date: Sun, 4 Nov 2012 16:18:39 +0100
From: tobias lunte hfg-gmuend de
To: ellimae288 gmail com
CC: gimp-user-list gnome org
Subject: Re: [Gimp-user] double exposure

Hello,

afaik, the "Screen" blend mode is a more accurate reproduction of a double exposure. However, it will brighten up your image, so if the two photos weren't underexposed to begin with (which they are when you actually make a double-exposure on film), you'll have to adjust the values. Don't worry, the Screen mode doesn't result in clipping, so usually you don't loose all that much information.

bw,
Tobl

Am 04.11.2012 16:10, schrieb Richard Gitschlag:

If it's the term I'm thinking of there are maybe twenty different ways to do this in GIMP.  But all of them have one thing in common - you need to import both source images as separate layers in the same image window.

From that point you can:
1 - Set the top layer's mode to either Brightest or Addition (neither one precisely reproduces an actual double exposure, but they're close)
2 - Keep the top layer's mode Normal and use the Eraser (or a layer mask) to fade the edges/transition between them.

-- Stratadrake
strata_ranger hotmail com
--------------------
Numbers may not lie, but neither do they tell the whole truth.

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Date: Sun, 4 Nov 2012 09:56:58 -0500
From: ellimae288 gmail com
To: gimp-user-list gnome org
Subject: [Gimp-user] double exposure

Is there a way to use this program to create a double exposure effect?  I can do it with my 35mm camera manually while taking pics.  But was not sure if you can create the same digitally??

Thank you!
Jenn

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