jeremiah_mccleary's profile

6 Messages

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120 Points

Thu, Dec 8, 2011 4:53 AM

Closed

Photoshop: Adjustment Layer Slider Inaccuracy with Mouse Clicks

I have trouble making accurate adjustments with the sliders in Photoshop CS5.1 Mac.

Take, for example, the contrast slider on the Brightness/Contrast adjustment layer: when I drag it to a new value (+2, for example) and release the mouse button, the value jumps backward to 0 and the marker moves slightly to the left. If I click the mouse again without moving it, the value jumps back to +2.

I've also experienced this issue in with the Memory Usage slider in the Preferences dialogue.

Both my OS and Photoshop have all the latest updates. I have tested this with two different optical mice, as well as the trackpad on my computer; all three cases yield the same problem. I've looked for a similar issue in Illustrator, but the sliders all seem to work fine there.

Thank you for your help.

15.1K Messages

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195.8K Points

10 y ago

Which OS?

And so far I can't repeat this at all -- every single value stays exactly where I let go of the mouse button.

Do you have a tablet, or a wireless mouse (known for their jitteryness)?

6 Messages

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120 Points

10 y ago

Thanks for your speedy reply :)

I'm using Lion (10.7.2). No tablet or wireless mouse.

Seems like it might be related to the OS. A colleague of mine who uses a similar Macbook Pro, also with Lion, exhibits the same issue on his machine. I also checked with another colleague who is still running Snow Leopard, and hers does not have the problem.

When I looked more closely at my screen, I noticed something funny: while I am sliding the slider, the mouse pointer itself jitters side-to-side in its path (about 1 or 2px, relative to the slider head triangle). So, if I release the slider when the mouse pointer is "jittered" off center, the slider head jumps slightly and the value changes slightly.

Any ideas what could cause this?

Adobe Administrator

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16K Messages

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296.7K Points

Based on your observations - It's probably a function of the OS and the device.

Sr. Product Manager, Adobe Digital Imaging

6 Messages

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120 Points

Jeff, I appreciate the assistance you've provided me in the past. Thanks for your input.

I wouldn't be entirely surprised if it is the OS.

I'm confused because the sliders in Bridge and Illustrator seem to behave normally on my machine, whereas most of the Photoshop sliders don't. They just don't seem to track accurately with the mouse pointer when they are being dragged.

Is there something unique about Photoshop's interface that would cause Lion to handle it differently than Illustrator and Bridge?

Adobe Administrator

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16K Messages

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296.7K Points

Possibly. We're going to look at it today and try to figure out what's going on.

Sr. Product Manager, Adobe Digital Imaging

6 Messages

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120 Points

Thanks again.

If this helps duplicate the issue on your end, so far I've confirmed it on two Macbook Pros and one Mac Mini, all running Lion 10.7.2, and Photoshop 12.0 or 12.1.

Appreciate your time looking into this.

15.1K Messages

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195.8K Points

Photoshop is a Cocoa app, while Bridge and Illustrator use the Carbon APIs.
And 10.7 does have several known video driver bugs affecting the cursor (especially on recent machines with the Intel HD3000 GPU).