Photoshop :: Curves Adjustment Bug
Nov 16, 2008
I have PS 6.0.1. yes I know its an old version but it does everything i require so I have no need for upgrade.
One of the main function i use it for is adjusting curves. recently I have noticed when i open a jpg and select adjustment/curves. Photoshop automatically selects the eyedropper tool and the curves window is NOT displayed. When i attempt to do anything i get the windows error bell/noise. The only way i can carry on is by selecting escape on my keyboard.
This also happens if i attempt to add a curves adjustment layer. The eyedropper tool becomes selected and no curve adjustment window is displayed.
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Oct 25, 2013
When making adjustments in the curves panel the procedure in previous editions was to raise the curve in the upper section to lighten the image and lower it to darken the image. Mine is working just the opposite. When i raise (or lift) the curve the image darkens and when I lower it lightens. The lower half for contrast works the in the same backwarsds way.
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Mar 23, 2013
Using CS6, try to open a curves adjustment layer...the way I have for years...levels opens. Will not correct. Have to close the app and reopen. Impossible to find on internet. What's up?
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Jun 21, 2013
Just upgraded CS6 to CC and really enjoy a lot of the changes but there seems to be a bug with the adjustment layer curves (not regular curves).
If I make a change to the curve using modification point and then toggle "undo", the preview of the image will toggle on and off with the change but the modification point does not reset. This point stays in the original position even if the curves are not in effect and will only reset when another layer is selected before returning back to these curves.
One must also manually reset the point if you wanted to revert back to the original (instead of undo) because if you place another modification point on the curve it will revert back to the change you made earlier.
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Jan 5, 2013
Many Photoshop users consider the Curves panel to be Photoshop's most important feature. For many Curves users, the Layer panel introduced in CS4 does not offer the speed, the instinctive use, nor the superior results of the older Curves Layer panel.
The Curves dialog includes all the features that long-time users rely on. Some of these features have not been included in the Adjustment Layer version. They should all be available in the Layers panel, too.
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Mar 24, 2012
After doing everything i can find to optimize my hardware/software for doing 3D animation in Ps Ext CS6. I still cannot render an animation to video using the Ray Traced Final setting. (Ray Traced Draft, no problem.) The last time I tried (after repairing disk permissions), at least Ps did not crash and give me the same old crash report (Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x00000007a0020000). This time I just got an error msg that my request could not be completed. (Progress?) Checking Activity Monitor, I could see that my available RAM, which was 13 GB when I started the render was now less than 1 GB (761 MB).
So, I have come to the conclusion that my 16 GB of RAM and 300 GB available for virtual memory on my HD is not enough for rendering the type of 3D animation I am trying to do. Would you agree? Also, I have read it is not good to use the same HD your program is installed on for a scratch disk, so I am considering getting an external solid state drive to use as a scratch disk.
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Apr 10, 2013
In previous verions of Photoshop, when I made a curves adjustment layer, selected the midpoint, then did a shift-arrow adjusstment, it was always in increments of 10. Now in CS6, it is 12 on my machine, 13 and 14 on the two other machines in the office I have checked. Why would that be? Can that be changed so it is 10 again?
FYI - this is all in RGB mode if that matters.
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Aug 5, 2012
I have read several of the discussions about the curves adjustment flyout showing greyed out controls after use. This also happens on my levels adjustment flyout. On my CS6 curves adjustment flyout, the drag control and the edit points control are both showing up as active and at least it appears that the drag control is working properly. Is this problem also one that Adobe is working on?
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Nov 6, 2013
In CS3, CS4 and CS5 I was able to:
(a) add a point (corresponding to the position of the Eyedropper Tool on the image) to the RGB composite curve by Control + Clicking; and
(b) add a point (whilst focused on the RGB composite curve) to each of the Red, Green and Blue channel curves by Control + Shift + Clicking.
Neither approach seems to work in my CS6 (PsCs6 x64 latest update, on Win 7x64).
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May 20, 2012
Odd behavior in released x64 version of CS6 for Windows: on my laptop (ASUS G73S with 1.5 gb nVidia GeForce video), when I crop an image, the drop-down menus in a curves adjustment layer become unclickable.
But I can still access the RGB channels using the Alt + 3, 4 and 5 shortcuts. This behavior doesn't occur on my workstation, and if I don't crop the image, the drop-down menus work fine. I have the crop tool set to delete pixels. Also, if I apply curves directly (not with an adjustment layer), the dialog box works OK. And the other adjustment layers seem to be working, too. It's only the curves layer that's doing this.
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Dec 11, 2012
this has been only happening since updating this morning from 13.0.1 - 13.0.2...I have a problem where if I create a new curve layer and then press the preview button on/off it fails to re render the preview and nothing else happens until I OK it. I also notice that it creates history entries on the history panel like I'm making adjustments? Weird!
There's been a few other noticeable things too. The liquify window now doesn't draw as nice and smoothly as it did with 13.0.1. The cursor jitters a lot and control isn't as smooth.
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Oct 25, 2012
Adjustment layer- curves. I have always used a Curves Adjustment Layer in CS3 to brighten images and increase contrast. I have just upgraded to CS6 and when I open the adjustment layer and try to Command Click choose points in the photograph to drag the line up or down to darken or lighten I get instead some crazy saturation changes.
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Jul 16, 2012
CS6 is consistenly locking up in the selective color and curves dialog. i.e. I come to the selective color dialog and try to choose the reds and it is stuck on whites, which I used last and I can't change it. I have to quit and relaunch. The same thing is happening with the Curves dialog. I can edit the RGB curve , but can't select the R, G or B channels until I relaunch. It works for a while and then it just stops.
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Feb 23, 2013
I am preparing a batch of images for test submission, for a stock photo library.Recently a person working for one of the visual effects studios in London happened to tell me that these strict agencies use some set of layers that can separate tonality and color values to check for banding, dirtiness, noise and all those technical flaws that the human eye can't notice on a monitor.He said they perhaps have an action for it so that they can review faster.
He said that it is known as 'Craze Curves' or 'Visibility Curves' technique.He further added that all the studios use it before giving the final files to clients so that there is no issue in printing afterwards.It is sort of a quality control check and has been used by digital and advertising agencies all over the world.
But now his email seems to have changed and I can't get in touch with him to know how to use the technique.
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Jul 3, 2008
how to use Curves, in CS3.
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Jun 26, 2013
How do you get bezier curves in PhotoShop CS6 to act the way they used to in CS5.5? In 5.5 i would be able to move/adjust the path with the direct select tool and the control arms would stay at the angle they were created at. In CS6, depending on where you direct selected the path, would depend on how the path could be/would be adjusted. And the control arms have become more fluid, rather than static. They do not keep the angle they were created.
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Jul 30, 2013
How do I get a percentage value in Curves-in CS5 it used to be command-click would make a dot on a point on the curve, to allow for accurate adjustment...
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Oct 17, 2013
When using Curves to increase contrast for an image, I see that some people will use the eyedropper to define an anchor point on the Curve to manipulate, and others just seem to drag on a spot on the curve without first using the eyedropper.
1. Is there a reason to not use the eyedropper, and instead just drag a point on the curve?
2. Won't using the eyedropper always be more accurate than just eyeballing a spot on the curve to drag?
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Dec 13, 2012
I have a question about using toning curves...
In older versions of Photoshop, I was able to use Paul Butzi's beautiful toning curves (which are ACV files) through the Curves menu.
There was a 'Load' button, and if I pressed that, I could browse my curves folder and pick whatever curve I wanted. Is there any way to do that in Photoshop CS5? I can't seem to find a 'Load' button under Curves, and I'm not sure how to use the Custom Curve feature.
I can't seem to load them under Filters, either. How I could load them?
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Mar 29, 2011
When using Curves, one used to be able to move from one point to the next ("point" is what I use to refer to the points that determine the shape of the curve) by holding the Control key and pressing Tab.
This no longer appears to work with Photoshop CS5. I am wondering how I can move from one point to the next without having to click on the next point. More often than not I end up actually moving the point when trying to click on it.
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Apr 4, 2012
So, I absolutely love a lot of the changes I've come across so far. I am very happy with the crop tool changes except for one thing. I work on hundreds of B/W headshots at a time where all I do is crop>curves. Up until CS6, when in the crop tool it would still show tone info in the info pallette. Now it shows nothing. This puts a crimp in my workflow because I either have to open the curves dialog or switch to the eyedropper tool to see if I need to apply curves. I have noticed that if I hide the crop area it will revert to showing the info .
Also, with the curves dialog I am going to complain about something that started with CS5. The 'click and drag in image to modify curve' feature is pretty cool but it should respect my option settings. I work with it displaying the amount of pigment but the click and drag feature doesn't respect this setting.
As I said small issues (especially the second one) but it would be nice to get them changed.
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Mar 21, 2006
I am stumped with this problem and havn't found a thread that seems to give me a points in how to simplify the procedure/problem described. Is there a plug-in ?
I am using PS7.0 and am at the beginner end of the spectrum.
I have TWO pictures and want to duplicate the colour values at certain points in the picture. The manual operation would be to:
1) Open Picture #1, put colour samplers in at the points I want duplicated (max 4) and write down on a piece of paper the RGB values at those points. I make the assumption that the points are all present on the Picture #2 and that the tonal values are all different enough that they fall on different parts of the tonal curve. ....
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Dec 1, 2004
how to draw a curve to get this kind of effect?
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Dec 20, 2003
how to make curves with a set pixel width. It's hard to explain my dillema with words beyond that... Most of my question is detailed in the picture I've enclosed... (I needed a few visual aids to get my point across, lol)... I'm going to post again in this thread with another picture to help further explain, so check that out if this one doesn't cut it for ya.
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Feb 4, 2008
I'm using photoshop 6 and have a problem. When I use dutone curves,I can't reset it. Namely that when I finished tinkering with the curve and save the image, when I start on a new image the old curve is still in place. How can I reset the curve back to its original state?
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Jun 5, 2009
Is there a way to invert photoshop curves? Like making the opposite curve to neutralize an existing curve that I have.Actually it's simply switching all the input and output values,
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Oct 21, 2008
PS CS3
Windows XP
how to use Bezier curves for PhotoShop CS 3.
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Nov 25, 2004
creating nice and smooth curves, curved lines etc.
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Jun 2, 2008
Using Photoshop CS3 I am unable to change my darkness to lightness orientation as recommended by Dan Margulis (lightness on left, darknss on right). That option was available in CS2. Is it no longer possible in CS3?
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Jun 1, 2004
i`ve created a shape using curves, how can i antialias it and get a smooth curve (and a smooth outline for my mask)?
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Aug 24, 2006
my curves dialogue window went from tenths back to quarters (dividers inside window) and i forgot how to get it back. I can't believe I forgot something so elementary.
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