Marquee Tool 1 Pixel Off

Good Evening
I recently downloaded the Adobe PS CS5 trial, very happy so far.
However this evening I have had an issue with the marquee tool being 1 pixel off, making selections very hard...
I have a Nvidia 8600 GT, 4GB of RAM, Windows 7 64 bit
I have googled and researched solutions, seems the most reccomended method is to disable OpenGL however this seemed specific to ATI cards
I have tried this anyway, both on and off and it makes no difference unfortunately
I have updated CS5 and my GFX drivers and still no difference
Is there any other reccomendations please?
Thanks

Some say it's a nVidia driver glitch. I have reproduced it on one of my nVidia-equipped systems, and it's not the same with an ATI card, though arguably it's off on the ATI system too, just in a different way.
Try temporarily disabling OpenGL Drawing (Edit - Preferences - Performance) and see if the problem persists.
You lose a few things without OpenGL. This page describes more: http://kb2.adobe.com/cps/404/kb404898.html
Installing the latest nVidia driver from their web site might help.
-Noel

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I've recently upgraded from Photoshop cs3 to cs5.1 and have noticed that the marquee tool's selection is not as accurate as I'd like. For something simple like drawing a selection around a square I could previously do this down to the exact pixel with a single click and drag. My process (while working at 100%) now goes like this:
i) Choose which bit of the cursor I place in the top left of the square to trace (I use the black inner lines)
ii) Click and begin dragging and see that the selection in the top left is now 1 pixel down and 1 pixel to the right of where I clicked.
iii) Drag the selection to the bottom right of the square and align the inner lines of the crosshair
iv) Release the mouse button. The top left corner now springs back into the originally clicked position (good). The bottom right corner now jumps up to 2 pixels up and 2 pixels left of the actual corner.
I am left trying to approximate how far past my object corner I overshoot in order for it to be correct when it 'jumps' back. It feels as though I'm getting similar selection errors as if I was working at a random image zoom such as 337%
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Thanks
Tech info
Mac 10.7.3
Res: 2560 x 1440
Photoshop 12.1
Notes
Jumping problem is the same if 'snap' is turned on or off
The problem occurs at 100% and is marginally improved at 200% - although I can't get an accurate selection in 10 attempts.
Also in cs3 the Marquee tool's crosshair was 1 pixel thick and now in cs5.1 it is 3 pixels thick due to the white outline around it, I find this harder to use and unable to switch off.
Selecting cursors 'precise' in preferences doesn't fix it

Trevor.Dennis wrote:
I tried filling a rectangular selection larger than the screen, and duplicating it free hand on another layer, but was one pixel out on two sides. So I tried again at 200% and it was spot on.
This sounds like a similar effect, the requirement to zoom into the image in order to place an accurate selection. I've tried this repeatedly and the amount the marquee jumps is different each time, between 1-2 pixels up and to the left.
I'm trying to cut out many web type graphics which are only a couple of hundred pixels in height/width. Without an accurate selection tool at 100% my workflow is now:
i) Select Zoom and click three times to get to 400% (At which point selection becomes 90% accurate)
ii) Make the selection
iii) Double click the zoom tool to get back to 100% view
That is an overhead of five clicks which seems a bit long winded. Or I can re-open the file in Photoshop cs3 and select more accurately, which I don't really want to do.
Does anyone know of an option that can be toggled to make the Marquee tool more accurate or is a jumping selection on release just how it is?

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HI,
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When i use "transform selection" and drag the selection 1px to match the shape again on high zoom, it shows OK both on 100% and zoomed in.
using Mac Pro 2x2.66Xeon Intel, OS X 10.5.6 , ATI RadeonX1900
Thanks, A.

Chris Cox wrote:
Of course, if you can provide us with information about your GPU and OS version, we can try to track down the cases we missed, and continue to work with Apple and the GPU makers to get the driver issue resolved.
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ATI Radeon HD 5770:
Chipset Model: ATI Radeon HD 5770
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 1024 MB
Vendor: ATI (0x1002)
Device ID: 0x68b8
Revision ID: 0x0000
ROM Revision: 113-C0160C-155
EFI Driver Version: 01.00.436
Displays:
DELL U2711:
Resolution: 2560 x 1440 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Connection Type: DisplayPort
Television: Yes

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See attached picture, the pink line is 1pixel and selections does not touch it
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PooMv2 <[email protected]> írta:
>I am also having the same problem.
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>Still having problems, even if I turn OpenGL off.
>Is their a fix on the way? Extremely annoying, and quite disappointed this hasn't been spotted by Adobe before release.
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>Steve
>

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If you want to give a Script a try, paste the following text into a new file in ExtendScript Toolkit (part of Photoshop’s installation, Applications/Utilities/Adobe Utilities/ExtendScript Toolkit CS4 or /Applications/Utilities/Adobe Utilities-CS5/ExtendScript Toolkit CS5) and save it as a jsx-file into Photoshop’s Presets/Scripts-folder.
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// make 4 quadrant copiers of selected layer;
// 2012, use at your own risk;
#target photoshop
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var theLayer = myDocument.activeLayer;
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var theHeight = theBounds[3] - theBounds[1];
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var ver = 0;
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myDocument.activeLayer = theLayer;
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var bottom = top + (theHeight / 2);
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myDocument.selection.select(theArray, SelectionType.REPLACE, 0, false);
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var id14 = charIDToTypeID( "CpTL" );
executeAction( id14, undefined, DialogModes.NO );
myDocument.activeLayer.name = theLayer.name + "_" + String(m);
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Thnx

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Yes, thanks - I was just about to post a response to my own question. They were cm, rather than pixels!
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What do you want to accomplish by "Delete"?
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-Noel

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You probably have a feather value other than zero set in the tool options bar.

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BOILERPLATE TEXT:
Note that this is boilerplate text.
If you give complete and detailed information about your setup and the issue at hand,
such as your platform (Mac or Win),
exact versions of your OS, of Photoshop (not just "CS6", but something like CS6v.13.0.6) and of Bridge,
your settings in Photoshop > Preference > Performance
the type of file you were working on,
machine specs, such as total installed RAM, scratch file HDs, total available HD space, video card specs, including total VRAM installed,
what troubleshooting steps you have taken so far,
what error message(s) you receive,
if having issues opening raw files also the exact camera make and model that generated them,
if you're having printing issues, indicate the exact make and model of your printer, paper size, image dimensions in pixels (so many pixels wide by so many pixels high). if going through a RIP, specify that too.
etc.,
someone may be able to help you (not necessarily this poster).
a screen shot of your settings or of the image could be very helpful too.
Please read this FAQ for advice on how to ask your questions correctly for quicker and better answers:
http://forums.adobe.com/thread/419981?tstart=0
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screenshot
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I click around the area I want to select.
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Ctrl click if you own a Mac.

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