GIMP :: How To Apply General Brightness Contrast Setting
Sep 2, 2011
i've got the latest version of gimp and ufraw.
i have a folder with about 100 jpg files in it that i want to apply a general brightness contrast setting to.
Using the main interface to do each one I would need to go to Tools > Colour > Brightness Contrast and set a Brightness value of 16 and leave the contrast at 0
What i would like to do obvious is to run a batch command to do this operation on all files in a folder
I've tried guessing at a few command lines to do it but all have failed and basically how to do it.
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Oct 27, 2012
I am able to change the brightness/contrast for part of an image by using, for example, the Rectangle Select tool. I want to be a little trickier though. I would like to use the rectangle select tool, but have the effect of the brightness/contrast apply 100% at the bottom of the rectangle and say 10% at the top, with gradations from 100 to 10 from bottom to top. Is this possible?
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Oct 4, 2013
What I'd like to do is adjust the color and brightness/contrast of many layers of an animation. Now, for a still image with many layers I know you can generally add a partially transparent layer over the whole thing, however, since it's an animated .gif I have to do the same thing to each individual layer. I could probably go through and do it by hand and just get it over with. But, I'm curious if there's a feature for this, or is there a plugin that can repeat actions for multiple layers?
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Aug 15, 2012
What is the effect or process to, for example, ensure that normally washed out bright background on, say, a sunny beach, has same depth and contrast as the darker subject in the foreground? It is an unnatural state since your eye and most cameras will adjust to one extreme or the other.
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Feb 20, 2013
what is the best method for adjusting brightness and contrast in CS6? Is it by simply adjusting the Brightness / Contrast properties in an Adjustment Layer or is there a better way of going about it?
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Jan 11, 2006
I can go to Brightness/Contrast click on it and get a window that will allow me to adjust the Brightness/Contrast using sliders.
when I use Brightness/Contrast it will give me an eye dropper tool?
How do I get my Brightness/Contrast working again? I've reset my pallet locations and even re-installed the software.
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Sep 12, 2003
I add a noise filter too the whole pic and then do brightness and contrast,the preview looks alright, press ok and the noise dosent change at all
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Jul 11, 2013
It's a small issue, but one that was a no brainer in CS5 - I use Legacy Brightness Contrast about 80 times a day, and CS6 no longer keeps it ticked, I have to manually enable it every single time, and by about the 57th time of having to do this every day, it becomes a more than a little irritating. As some of you will remember, CS5 just kept it ticked once you selected it.
The new brightness / contrast is great for certain tasks, not so great for others. I, and I'm sure many others rely on the legacy version.
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Dec 16, 2011
Brightness/contrast only seems to have an effect on the 'background' layer--not on any subsequent layers I apply. And it only seems to be on the current docs that I am using--if I open some older ps docs from the recent past, brightness/contrast works fine on all layers...?
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Apr 8, 2008
I try to apply Levels & or Brightness & Contrast settings to an image, it always seems to revert back to the way it was. The filters won't do anything it seems. I have Adobe Photoshop CS2. At home it did the same thing and I re-installed Photoshop only to find out it still did not work.
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May 1, 2007
I am in Photoshop 7.
Is there a keyboard shortcut to the Brightness/Contrast?
I am tired of going through the menu.
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Aug 12, 2008
'Brightness/Contrast' screen becomes unexplainably absent while using my PhotoShop 7.0 in XP. When I click on 'Brightness/Contrast' the eyedropper becomes active as usual but the dialog screen with the two 'sliders' for brightness and contrast is not visible. Where is it? If I uninstall and reinstall it's OK again for a while.
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Mar 13, 2011
I'm looking for a plug in which will reduce the brightness (to a level which I can select) of an image away from a central point on the image. Does such a plug in exist.
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Apr 24, 2006
I am using PS7 on a PC.
I try to access Brightness/Contrast Menu the eyedropper tool appears and the only way out of the the tool is to hit ESC. How do I get my menu back?
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Jun 14, 2004
I have an indoor group photo using flash light. The problem is the center of the picture is much brighter than the sides. Is there any easy way to increase the brightness and contrast towards the sides, and gradually decrease the brightness at the middle?
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Mar 8, 2011
looking at the image plane and the 2 inputs I used - diffuse / opacity (alpha channel), what parameters are the best way to adjust the image plane brightness / contrast / levels (photoshop style)?
That’s what I like about these forums. A great way to get straight to the point and learn stuff fast.
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Mar 24, 2014
I'm importing RAW files straight from a CF card reader into my network storage drive via LR5.3. While reviewing as it imports initially each image looks great but a few seconds after it loads onto the screen it seems like LR applies a bit of extra brightness and lessens the contrast and I lose a load of detail that was there originally. I've not touched the import settings and no filters are being applied by myself on import.
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Nov 13, 2013
Every time I use adjustments like brightness/contrast, PSP seems to remember those settings, because the next time I use them, they start with the same values as I used before. But I do not want that. This way I always have to move all sliders to their zero position before adjusting. Every image needs different values and I always like to start from scratch (zero values).
So, how can I tell PSP not to remember those settings every time?
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Oct 23, 2005
Having trouble with my Photoshop 7. When I want to use the Brightness/Contrast adjustment within the Image/Adjustment section the scroll bars for brightness/contrast do not come up. An eyedropper tool appears. When this happens I can only click on the image and change the color squares on the left in the tools area. I can't even close the image or close the program. I have to Alt/ctrl/delete to close the program. I've also uninstalled the program & reloaded but this problem continues.
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Sep 8, 2012
I'm trying to adjust brightness/contrast and saturation over about 30 layers on an animated GIF. Everything looks great until I do a save for web and click on the animate box. At that point, the color/changes drop off completely. It shows up fine when it's just the one layer being shown. And it seems to be showing up on all the layers when I'm in the main edit window. I keep looking and making sure I have the 'this adjustment affects all layers below,' and I do. I even tried saving a GIF with the other setting turned on and I got the same thing.
Anyway, I exported a few GIFs, thinking maybe the adjustment layers would kick in as it saved, but nope. Neither layer saved into the exported GIF.
I'm sure this is just a simple setting I'm missing, but I'm banging my head against the desk at this point.
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Nov 13, 2013
What is the keyboard shortcut for remove color cast and for brightness/contrast?
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Dec 8, 2003
I sometimes have to fix up group photos that have been taken with a flash, where the people farthest from the camera are relatively dark. I would like to be able to apply the "brightness" and "contrast" controls to the photos in such a way that the amount of change varies across the picture, in much the way that the "gradient" control works for a color or a pattern.
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Mar 15, 2013
Does the Style setting Plan Readability work for General Notes? I've been thinking we should use notes for all our text so that they react the same as all the other Civil 3D labels. But they don't seem to. They scale correctly but stay parallel to the UCS.
I've tried this in a fresh drawing from a simple template and from an OOTB template. They never rotate in a layout. Is this the normal behavior or am I missing a setting? This is how I have it set in my style:
Civil 3D 2012 SP 2.1
Dell Precision T7400, Xeon CPU 3.16 GHz
Win 7 Pro, 64-bit,12 GB RAM, Nvidia Quadro FX 4600
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Nov 28, 2013
Let's say that I have three stops difference between the luminance of my computer screen and the paper white under the lamp in my room. Which setting should I use for the brightness slider on the print module?
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Apr 15, 2012
I have an image in which I have selected certain parts using the magic wand. How do I apply a contrast to the selected edges. The adjustment layers deslect the areas.
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Jan 23, 2012
i was curious as to which sharpening/color correction techniques this photographer used to result in such a perfect photo. more specifically, i'd love to learn how he managed to make the blue halter strap almost shimmer and pop out of the image and his face a beautiful, warm and rich coffee color.
i attempted to recreate his enhanced image with the original, but fell slightly short in a few areas. i did eventually manage to get a similar look by simply adjusting input levels and sharpness, but had the toughest time making his head and all the fine details on it really "pop" AND "glow".
i basically increased the black input levels a bit to saturate and bring life to the image, but that resulted in the face and halter also darkening.
before: [URL] .......
after: [URL] .....
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Apr 12, 2006
how to apply a layer style/setting? I have a saved layer setting and whatnot but i cant seem to put it on another layer on another document.
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Apr 16, 2012
I have two images, taken in the same location. Because of slight changes to camera position or other things, they're not the same. The color and brightness are slightly off.
How can I match them? I'm especially concerned about the color.
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Aug 7, 2011
How would I go about making the side of his face less bright, how to isolate just that one specific area. (And I no longer have the xcf file saved).
I also noticed that after using the color and saturation tools, there are red lines on the scruff of his cheek. (I discovered that those lines were on the original pic, but they just became more visible after working with the color/contrast/etc). Is there any way that I can "smooth" those red lines without making it look like the dog's breakfast?
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Oct 16, 2012
I'm planning to start using Gimp for editing my photos. However, I've been looking through the functions, and I've also read the online manual. But there are two things I can't find.
1. How can I darken the highlights in a photo?
2. Is it possible to enhance the contrast in more detail than on a general level, e.g. midtone contrast only?
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Apr 14, 2013
I've noticed recently that when I use the EXPORT command to create a JPEG, the resulting image colors of the EXPORTed JPEG are deeper (certainly more saturated) and the contrast over the entire image is much higher. The image looks nothing like what it looks like in GIMP prior to export.
I've tried EXPORTing to TIFF and I get the same results (JPEG looks exactly like the TIFF, just a different file size). Is it a possible ICC Profile mismatch (i.g. not having one set specifically inside GIMP)?
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