Banding on screen

Just added a second monitor. Currently have an Apple Studio Display 19" and now have a new 1920x1200 32 bit color LCD Cinema Display. Monitor has been calibrated. Was originally set to normal factory setting.
In Photoshop CS3, I am getting banding from gradients and feathering so bad that even on a letter sized document with gaussian blurs or smooth gradients, I can easily see wide bands that go are in steps of 5% or more. I can't work with the monitor like this. What's weird is that when I changed monitor from millions of colors to thousands, the banding reduced.
Please help!

Setting the color display to sRGB seemed to reduce internal banding, so thanks for that tip. However, the last band of the gradient still has a higher contrast from black to white than what I am used to, but I can live with it know.
I know it isn't a hardware (monitor) issue because the same thing happens to the other two designer's workstation's monitors two with the same and different files. I know that the monitors come set to Cinema Display profile from the factory.
Thanks for you help.

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Strange display problem band through screen -=Pictures included=-

I bought a refurb intel imac and had it delivered on May 30th. June 2nd, I brought the computer in to the apple store to repair the bleeding backlight on the LCD (corners were very bright); I just picked it up again on June 5th.
At first, I was very impressed with the turnaround time on the repair (3 days, 2 of which were weekend days). However, once I got the imac home & set up again, I was disappointed to see a thick discoloured bar down the entire vertical length of the screen!
The band is really strange; it changes colours depending on what colour is on top of it, and seems to flicker. I've determined that it only appears when the display is set on "millions of colours", not "thousands" or "256". I've also tried resetting the PRAM with no luck...
What are my options here? Is there an easy fix that I can try myself? Or is it more likely that the Apple store techs damaged something internally when they installed the new LCD? I really don't want to lug this computer back to the store, wait several more days, then lug it back home again. It's a huge inconvenience especially since the imac is all-in-one so I'm left using my old PC that was looking forward to a peaceful retirement...I just don't see any other choice...
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It appears this other post on another thread shows a similar pattern. You might have to be logged on to see it:
http://discussions.apple.com/message.jspa?messageID=2487810#2487810

IMac Display -- White band across screen

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I have the same issue.. although it isn't terribly noticeable yet... It has crept up using this computer for a month. The computer has only been in use for 1-1/2 months. I have multiple band running width wise down the entire screen.

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Banding in viewport...

I'm running CS6 on win 7 x64. Quadro 6000 with latest Performance drivers. Eizo ColorEdge display.
I have a 32bpc linear comp and if i create some gradients I get very bad banding in the viewport. With Full resolution, adaptive resolution off(final quality). This is only a display issue in the viewport, because if I perform a "Save frame as..." after it renders, the viewport will refresh with the newly rendered image, and it looks fine, no banding at all. As soon as I switch from the Rende Queue tab, back into the comp to continue working, it pops back to the degraded preview.
These are .exr files I'm saving in linear color space. If I open up the file in Nuke, it looks perfect no banding at all. In Photoshop CS6, the banding is still there. So I think it's some issue with the way CS6 products are displaying these images.

It is common to see banding on screen if you have a gradient or big blur, even if your project is set to 16- or 32-bit mode. With some examination (try using Levels to really boost the contrast), you'll find that the banding is just in the 8-bit screen display, not in the actual pixels and not in the resulting EXR file.
I think the Nuke viewport uses dithering in its viewer, which kills the banding. After Effects uses dithering when saving out to a lower bit depth file, but not in the viewer. You can add a slight Noise adjustment layer on top (make it a guide layer) if you want to simulate the dithering and get rid of the banding on screen.

Gradient banding issues in CS3

CS3 has a gradient banding problem that no-one seems to be openly acknowledging or addressing.
If i make a graduated background in either Illustrator or Photoshop there is obvious banding in the gradient fill.
I have researched the problem on the net and it seems that many people are experiencing this problem but that there is no known solution or patch form Adobe to fix this. Only useless suggestions about work arounds for this simple exercise. Interestingly several people report never experiencing this problem until they upgraded from CS to CS3. I also fit this category.
I run a mixed Mac/PC network and CS3 produces fairly large background gradients perfectly in PS on my PC, though not in Il. My macs fail to produce gradients of any useful size without significant banding in both PS and Il.
I know that many other people have this issue - when is Adode going to publish something useful to address it?

John,
Where do you get the idea that Document Raster Effects settings should match a "document resolution" of 5080 or 2540?
> "300" is way too low ( if you are referring to document resolution, not image resolution )
Document Raster Effects
is a raster image resolution setting: it's the resolution of the raster images that are created by Illustrator's raster effect features. Specifying a raster resolution that is 1:1 with an imagesetter's dpi is ridiculous.
Further, where exactly is it that you "usually" set a "document resolution" in Illustrator CS3? The document resolution setting in earlier versions was simply the flatness setting, and defaulted to "800 dpi" (which is a flatness of 3, assuming a 2400 dpi imaging device). That setting is no longer even present in Illustrator, since (as I recall) AI 10. Flatness had nothing to do with grad fills; it affects curve accuracy.
You guys are talking about a problem with banding--the OP implying that he has been investigating the problem for some time--responders even offering suggestions to "fix" it. Yet no one in this thread has yet stated any of the
specifics that are necessary to even talk about banding:
Where
is the problematic banding occurring? Paddy Rogers does not even say whether he is talking about banding
on screen or in
output.
Assuming the banding is in printed output, what kind of device is it? If it's an imagesetter, is it using PostScript level 3?
What are the CMYK color values between stops of the of the page-size grad fill?
What is the size of the page (distance the grad spans)?
What is the halftone ruling being used?
These suggested "fixes" are myths:
Rasterizing the artwork
This is nonsense. It doesn't matter if the color values across a uniform grad are from vector commands or actual colors of pixel bands. Raster grads yield banded results just as easily as vector grads do. Banding is a function of the dot size and halftone ruling of a printing device. Rasterizing doesn't magically increase the resolution of a printing device.
Setting Raster Effects Resolution to a higher value
This has nothing to do with grad fills in Illustrator. A grad fill is not a raster effect.
Transparency Flattener Settings
Again, has nothing to do with banding in grad fills. A low setting may result in pixelation, not banding.
Antialiasing
Has nothing to do with banding in graduated fills.
Paddy, you claim that you are experiencing increased banding in both Photoshop CS3 and Illustrator CS3, as compared to the CS versions of those apps. Have you actually compared the
same files being sent to the
same printing device? If so, provide the specifics of a page-size grad that reliably produces the problematic banding. Be sure to state exactly what device you are printing to.
JET

How do I upgrade to the latest Garage Band if I have the 10.6.8 operating system?

I currently have the Mac OS X 10.6.8 operating system and the Garage Band I have is 4.1.2. The latest version of Garage Band appears to be 10.0.2, so I'm thinking I should upgrade to that. In looking at a You Tube video on how to use Garage Band, his screens didn't look like mine. Anyway, can anyone tell me whether I should upgrade to the latest operating system and, if so, how I go about doing that? Is that a simple download, click on it and it loads and that's all there is to it?

Thanks for replying. Is that Mavericks? Someone had said Mavericks wasn't such a good operating system. What do you think?
Mavericks is better than its predecessors Lion and Mt. Lion. It is faster and introduced better safety features, like the Gate Keeper. And it supports syncing devices using iCloud.
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If you decide to upgrade, make a full TimeMachine backup before you do that, so you can restore your current system, if you discover that necessary apps are not working. Your current system is the last system that still supports Rosetta and PowerPC applications. You may have expensive software installed, that cannot be upgraded to Mavericks. So check, if all necessary apps, plug-ins, audio interfaces will work with Mavericks.
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Will subtle banding in gradient print?

I apologize for yet another topic about gradients and banding, however i could not find a reassuring answer to my question.
As you can see, my gradient created in InDesign shows (subtle) banding on screen, both in InDesign as in Acrobat.
I know capable RIPs handle gradients in way that's optimized for the device to prevent banding as good as possible. But... are RIPs capable of producing better results than adobe's screen rendering?
What's the best way?
1. Trust the RIP, and send the pdf with "real" gradients (smooth shades are they called i believe) in the pdf.
OR
2. Recreate the gradient in Photoshop with dither, which makes it look perfect on screen.
The printer handles files up to pdf1.7, so assume their RIP is capable of optimizing smooth shades.

I got the results of the prints. The printed versions look almost identical, but there is a noticible difference:
The real gradient:
- shows banding on screen
- shows NO banding in print! The gradient looks really clean.
The photoshop dithered gradient:
- looks better on screen (no banding)
- no banding in print either, but a VERY subtle noise (the dither) is visible
Conclusion (with this printer anyway): leave the gradient as a gradient!

Wake From Sleep Reboots New Mac Pro 2.8 GHz 8-core 10.5.2

Add me to list of users with this problem.
I bought NEW computer yesterday.
Mac Pro 2.8 GHz 8-core 10.5.2
ATI Radeon HD 2600 XT
Yesterday, I ZeroWrote the OEM Apple hard drive and Installed 10.5.1 from OEM Install disks -- ran all updaters, repaired permissions numerous times during build.
Only 2gb OEM Apple RAM installed
Added on (from original installers): CS3, Office 2008, Toast 8.03, Stuffit 12.01, Silverfast AI 6.5x (Epson 4990). It appeared to be waking properly during the build.
Last night, last Software Update updater ran was ATI RADEON HD 2600 XT Firmware UPC 1.0.
This morning, wake from sleep rebooted machine.
Apple had me disconnect all cables, including power cable for a minute and then plug back in.
This worked for a couple few minute sleeps, but after lunch it rebooted again waking it from sleep.

I got my 8-core StartUp Disk deselected and have had only one auto reboot when waking from sleep.
HOWEVER, now I have heavy vertical bands twice now when it wakes up my 30" Cinema Display:
http://discussions.apple.com/message.jspa?messageID=6919620#6919620
It had wide vertical banding, white edges in corners and edges, and white fog over entire screen that seemed burned into the screen -- it eventually corrected itself back to normal after being on over a couple hours.
Second time, I had wide vertical banding, 6" and 3" wide with rows of white, green, blue pixels.
I connected the 30" to the old Mac Pro -- 10.4.11 -- AND THE BANDING GRAINY SCREEN APPEARED CONNECTED TO THE OTHER MAC like it was burned in the LCD.
So it appears the banding is in the monitor the monitor.
The burn-in cleared itself after being on about 120 minutes.
*It seems the new Mac Pros have some devilish issues with sleep on their Apple Cinema Displays to the point it is destroying the monitors -- or it is coincidence...*

IMac not booting from HD, cannot repair disc in Disk Utility

First the problem:
I've had the imac G5 for nearly two years and its been running without a problem, now it suddenly wouldn't start up. Firstly I get two or three grey screens in succession looking as if being drawn from top to bottom very quickly, then the apple logo and timer, after a minute or so the fans start up to full power and it stays that way.
What I've tried:
Reading around discussions I tried rebooting from DVD installer and using disk utility. Result: error message: The underlying task reported failure on exit. 1 volume could not be repaired because of an error.
Because I want to sell the imac I had backed up all of my important data so I zero-wrote the hard drive in preferrence to buying a third party repair package. Reinstalled from DVD. Shut down and restarted. Everything worked except those banding grey screens appeared that were never there before. Something looks wrong. Then when i tried to reinstall microsoft office (as a test) the OS seemed to freeze and I had to shut it down again. Now it won't boot up as before. This looks like a very serious problem.
I hesitate to buy tech tool pro in case that doesn't solve it either.
Can't think if I did something to cause this. All I've been doing is transferring some data via ethernet to a newer mac. There was also a Lacie firewire drive linked to both computers as i was backing up stuff. One night I shut the iMac down and the next day it started with this problem.
Well... any educated suggestions would be most welcome,
thanks.
By the way, the memory in the mac was purchsed from a third party and installed ages ago by myself. Never been a problem with it and have been running Final Cut Studio no trouble.
iMac G5 2GHz Mac OS X (10.4.7) RAM 2GB

Long story short, I had the same problem last week, just after installing the latest software updates. I went through all the resets and disk utility verification (multiple times with phone support -- Apple Care), then took it to the local Apple store b/c nothing worked. They couldn't figure it out either and recommended that I try to backup my data on my bootable external drive before they started messing with my hard drive, since Apple stopped providing this service. I brought it home, could not boot from my external drive, so booted from the disk again, just for kicks I ran the same verification process (this was the 3rd or 4th time). This time something happened but it still failed. So I ran it three more times (each time something new happened and then it failed, until the third time when everything worked. The only problem now is that I seem to have lost all sound???? I did immediately make a duplicate of the Imac hard drive. Any thoughts on how to get my sound back? hope this helps....
Imac G5 20" Mac OS X (10.4.9)

Where are display quality pref's in CS6 AI?

What happened to the display quality preference in AI CS6? I've got banding in a blend on screen, and can't tell if it's artifact of display or truly a problem with the blend.

rexprints wrote:
But my question was about rendering of gradients, not necessarily in the EPS file format.
That sounds different in #2.
Anyway: Banding on screen will not necessarily mean banding in print. Talk to your print service provider, because it depends on their equipment and of course on how exactly your stuff is printed. There are lots of different techniques and machines around.

Won't boot in windows safe mode

I have a satellite 205, 20 months old, that began intermittently going to blue screen, then the problem became permanent upon start-up, including a partial display of windows logon screen, then the blue screen wtih message, "attempt to reset display driver & recover from time out failed", with reference to driver igdkmd32.sys. I could boot in safe mode. Attempts to update the driver resulted in a successful boot once, but soon went back to blue screen and boot menu. I restored with CD to out-of-box condition, but no improvement; worse if anything. It continuously recycles after initial start-up window and won't even reboot in safe mode. It shows a couple of bands of screen when trying to start windows, including black dots and even strange sound like a plucked guitar string. I booted from CD several times, and ran memory checks and chkdsk, even reset the memory. No problems revealed.
I can't find anything else to try and would appreciate any suggestions.

I restored with CD to out-of-box condition, but no improvement; worse if anything.
Service time.
Locate a Toshiba Service Center
-Jerry

White pixel band on my 15" screen

Hello guys!
I hope you can help me because I do not know where to turn now. Let me explain my problem.
I purchased in the month of November 2010 my 15 "MacBook Pro (mid 2010, 2.4 GHz, 4GB of RAM). During the first year of use no problem, the mac worked great and I used it immediately as your primary computer ( traveling and living away from home was an obvious choice.) If at the beginning of the second year were presented serious problems, namely: continuous computer crash, that I initially tried to solve disassembling and exchanging of cards instead of the Ram ), irreversible damage to hard disk drives (internal and external) resulting in loss of critical data, partly recovered by programs such as Drive Genius. And a band of white pixels appeared on the screen (approximately 6.5 cm from the left side of the screen wide and about 4 cm), which is attenuated slightly shake up the screen. All these problems (in time of exams and work) have led me first to ask for help Aesse computer, Apple Premium Reseller of Catania, with whom we have tested the Mac for more than a month, and it was found necessary to replace the Main Board. same fate at the Apple Store in Catania.
After litigation related to Apple's warranty (the problem occurred in the second year and was linked to a lack of conformity), the Mac has been sent by the retailer Euronics (chain reseller Italian electronics) where I bought it, to its headquarters in Turin , where it replaced the Main Board. It's all right for a year.
To be noted that in terms of performance, the Mac is back to the first, but about two weeks the band reappeared pixels, giving me a few problems in the visualization and realization of the work (I'm a graphic designer). The Hardware Test does not detect any problems and the band alternates between moments of everlasting presence in moments of terrifying absence (for example, two days ago I had to present to a client a job with the **** white band, the first five minutes when he was absent ).
I did research on research on the internet but it seems this problem is far from common (the only loser I am, of course). I assume by contradiction that it is a burnt connector on the screen, because when the screen is slightly bent at the sides of the band fades or disappears (sometimes to reappear, sometimes to disappear), but would not explain why after repair (not touching the screen, but only the Main Board), the problem was not resubmitted immediately, but only after a year ... So, not being an expert, I ask you if you can understand what the problem is, because I have run out of options.
Thank you all for your attention

Welcome to Apple Discussions, wannafly.
You should be able to take it to be inspected at an Apple Authorised Service Provider.
Assuming that you are based in the Netherlands, try Apple Netherlands' online resource locator here.
15 1.25G/12 1G PBs, Mac minis, iBooks G3/G4, Mac OS X (10.4.3) Cube, TAMs, iPods 2G/4G, iPs, AEBS, AX

I upgraded Firefox, and now there is a blue band on my screen above the window, and I'm not getting the full use of the screen in viewing web pages. How can I get the window to expand to fill the screen as it did before?

There is a horizontal band or gap above the Firefox window at the top of the screen, where you can see the Windows desktop behind the Firefox window. On the left side of this band are the window tabs, and the menu bar, and another bar with the names of the open windows. I would like to have the Firefox window expand to fill the entire screen, like it did before the upgrade. Thanks.

Do you mean running Firefox in full screen mode?
*https://support.mozilla.org/kb/how-to-use-full-screen
If you are in full screen mode then you can hover the mouse to the top to make the Navigation Toolbar and Tab bar appear.<br />
You can click the Maximize button at the top right to leave full screen mode or right click empty space on a toolbar and use "Exit Full Screen Mode" or press F11.
*https://support.mozilla.org/kb/how-to-use-full-screen
You can also run Firefox in a maximized window to have easier access to the Menu bar and Navigation Toolbar.

Banding on screen

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