Color Depth Change/Banding

With iPhoto 6, whenever I try to edit a RAW image from my Canon cameras (.crw or .cr2), the image loads and then after a few seconds it appears that the color depth drops. This results in heavy banding and color shifts.
I was able to edit just fine using iPhoto 5. This problem does not effect .jpgs.
I believe I've seen a discussion similar, with a possible fix accomplished by deleting the Flip4Mac files (supposedly wreaking havoc with QuickTime or something). I tried that but no fix.
This is happens on two Tiger machines running the latest updates.

Followup:
I created a new account and copied a Canon RAW (.crw) file to the shared folder. I then imported that file into the iPhoto library in the new account and opened it to edit (full screen mode). There didn't appear to be any of the banding/solarizing effect.
Does anyone have any idea why this would be an account specific problem?
I had also previously (the day before) downloaded the latest version of the Flip4Mac software and installed it, with no change to my problem.

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Remote Desktop Client 8 -- prevent color depth change

Consider the following scenario: Windows 8 client and Windows Server 2008 R2 (RD Host is 7.1). Connection occurs over internet via 3G modem.
In the RD client settings I manually set network speed as Low-speed broadband:
and 15-bit colors (in the display tab)
The problem is that when my connection is dropped (mosly not longer than 1 second) or I experience slow network within a short time (few seconds), RD client reconnects to the server, however colors are dropped from 15-bit to 256. The only workaround is to
disconnect from the server and reconnect again. I'm scared from 256-color terminal. Is there any way to disable color bittness change when I experience short network issues? this problem is new for Windows 8 (with previous RD clients I never experienced such
issue).
thanks in advance!
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I've been getting this a lot lately (new RDP Client that came out recently??)
A server that I connect to, occasionally has a congested link.. only for a few moments.. but the RDP session will blink, and drop down to 256 colours - Outlook/Office is VERY ugly and unusable
I have to disconnect, and reconnect to get back to 16bit colour
I'm using the MS Remote Desktop Connection Manager - although I'm pretty certain that just leverages the current MSTSC client
Windows 7SP1 Workstation
Shell Version 6.2.9200
Control Version 6.2.9200
Remote Desktop Protocol 8.0 Supported (in the help-about of mstsc)
Connecting to a 2008R2 RDS Server
Checking MSTSC on it, and I see it's a bit older
Shell 6.1.7601
Control 6.1.7601
RDP 7.1 Supported
I've been connecting to this RDS server for the last year or so.. and this display-bit-dropping has only started happening in the last month or so.
RB

AMD FireGL GPU + Creative Cloud app = Color Depth & other Issues

Hello, I am writing this post to help anyone who may have ran into the same issues I am seeing with my AMD FireGL graphics adapter when using the Adobe Creative Cloud app on a windows 7 PC.
I ran into a problem installing and setting up the Creative Cloud app on my new workstation that has an AMD FireGL graphics processor.
First off, the system is new (dell precision m4800, with an AMD FireGL V M5100 GPU), and has all the most current drivers and updates available.. that is to say, this is not a hardware issue.
The system operates just fine outside of the Creative Cloud app, but when I installed and attempted to login to Creative Cloud for access to download Illustrator, etc., the Creative Cloud app would open up and then only display a blank white page. No graphics, no data, just white.
When I got stuck at this point I called Adobe support and spoke to a rep who had seen the issue before. The rep worked around the blank white page in CC by loading the windows device manager and manually disabling the AMD FireGL GPU device to re-install and login to the Creative Cloud app.   This temporarily forced windows to use the default/dummy VGA graphics driver supplied with windows.   With windows using the dummy 256-color vga driver we were able to get the creative cloud app running and get me logged in to install my design software. HOORAY!--or so I thought....
At this point I assumed the issue was resolved, but I found that there was a new issue popping up every time I rebooted my system. Windows would load and log me in using the 32bit color depth setting, but as soon as the Adobe Creative Cloud app started up, my color mode would switch to 256 colors... D`oh!
Obviously I don't want to run at only 256 colors, and neither should you! Adobe, why does my color depth change to 256 colors every time the Creative Cloud app is loaded?
If you want to temporarily reset the color depth to 32bit, you can go to Control Panel -> Display -> Adjust Resolution -> Advanced Settings -> Monitor Tab -> & select "True Color (32bit)" from the Colors drop-down menu. Using this method will allow Adobe Creative Cloud app to continue running 24/7, however this is only a temporary fix, which will need to be applied every time the system is rebooted, or any time a user logs off then back in.. Frankly, its a bit of a PITA, so why bother?
The permanent fix is simple.. go to Start -> & do a Search for "msconfig".   Once found, run the msconfig utility and switch to the "Startup" tab, where you will be presented with a list of boot time startup items. Find the one labeled "Adobe Creative Cloud" and disable it by removing the check mark from the corresponding check box.   Then click OK. You will be warned that a restart may be required.. go ahead and re-start.   This time, when the system boots, Adobe Creative Cloud will not load, and your color depth will remain at 32bit. YAY!
If need be you can always load up Creative Cloud manually from the start menu if you need it, but it will knock your color depth back to 256 colors. Thus far i have had zero issues using adobe photoshop or illustrator without first loading the Creative Cloud app, so it isn't required. If i need updates or need to access other features within the Creative Cloud app i can, but it doesnt need to run 24/7 to use other adobe apps.
The short explanation is that Adobe is failing to fully and properly support the AMD FireGL graphics platform. The adobe rep i spoke to essentially said the same thing, but made certain to blame the graphics device and not adobe software--sure thing boss.   The truth is that the FireGL and its varients have been on the market as long or longer than the nvidia products that are supported fully by adobe.
It is clear that Adobe has made a choice not to fully support AMD Workstation graphics (FireGL) since not only is the Creative Cloud app broken and causing problems, but also no graphics acceleration features work in any of my installed adobe apps.. I basically get a message saying "please us a supported graphics processor". Seriously, how is FireGL not "Supported"?
I am not an AMD or FireGL fanboy.. Frankly I cant stand AMD graphics adapters and I genuinely prefer nVidia on my personal systems. At home, my 5 year old $100 nVidia gaming card is fully supported in all the adobe apps..
At work, however, I have no choice what hardware is provided to me and this lack of FireGL support has negatively impacted my productivity more than once. Admittedly, nvidia has much more market share than AMD in the workstation graphics realm, but that does not mean adobe should just ignore AMD completely!
Hopefully this post will shed some light on issues with Adobe Creative Cloud app and FireGL graphics cards that others may be experiencing.
Good Luck!

Minor correction... I called my GPU the FireGL, which is the old market name.. The current, proper market name is FirePro.. same line, just new branding after AMD purchased ATI.

Color Depth Choices Removed...Any other way to change?

SL removed color depth choices in displays. We use display link adapters (USB video cards) for extra external monitors (email/web etc) and setting the display to thousands increased performance dramatically. Now we are stuck at millions...
Anybody have some command line fu to change the display color depth?
<edited by host>

Sorry... No.
See Here > http://support.apple.com/kb/HT1808
You may need to try this More than Once...

Changing Color Depth

I need to change the color depth of an external monitor, but it seems this has been removed from 10.6! How can I change the color depth of an external monitor? Thanks!

You can improve the framerate only if your application is fillrate limited, if it is polygon limited you will see no difference.
But yes often you get increased framerates, but beware that using 16 bit colours will on NVidia mean you also use 16 bit Z-Buffer, which can lead to annoying rendering artifacts.
You have two ways to set the colours:
1) Change desktop colours to whatever you wanna use.
2) Use exclusive fullscreen mode, and set colours.
How about rewarding me some duke dollars for that answer? :)

Possible to change color depth for Leopard's VNC server?

I think it is very nice to include vnc server right into Leopard. But one problem, it seems it will only accept connection from clients when it is set to use full colors. This is painfully slow over WAN, any way to change the requirement from the server end?

Possible to change color depth for Leopard's VNC server?
Yes you can modify your screen sharing application so that you can adjust the colour depth. However you need to issue a command in the terminal to get this to work.
http://www.macworld.com/article/131094/2007/12/screensharepower.html

Solaris 10 - Changing default screen color depth

Hello,
I just upgraded a Sun Blade from Solaris 8 to 10. I have a rather old image display application (ftp://east.la.asu.edu/pub/software/pw-5.23.tar.gz) that is absolutely essential for my work, and it will not run under Solaris 10, either on the CDE or jave/gnome desktops.
The executable for this application was compiled using gcc on Solaris 8, and ran fine on Solaris 8 CDE (v1.4.3?) with the "Most colors for applications" color setting in Desktop Color prefs. With that setup, the application allocated 216 colors when starting up, which was sufficient. If the application could not allocate enough colors, it would use its own private color map, which caused window "flashing," but that was OK.
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I re-complied the application on Solaris 10 using Sun Studio 11, and the same problem occurs with the new executable.
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Any help that anyone can provide would be GREATLY appreciated. I am dead in the water without this imaging application. I am a member of the Sun Developer Network, and I don't know if I should post this message somewhere on the Developer Forums. Please let me know if I should.
Thank you in advance!!!!!

Hi,
In my first post there is a link to the code I am talking about. The code is public and available. It was created by Noel Gorelick at ASU. It is based on having an 8-bit Xserver running. There are few users of this code, but I completely agree with you that a new generation of unix-based imaging code needs to be developed that is system and Xserver independent. Optimal code should detect screen depth and open windows with desired color depth automatically, without "flashing.". That way, it could even run under Gnome, which allocates all but 18 8-bit colors for the desktop. Under CDE, the code allocates 224 colors for itself, which is great. The above code will create its own colormap if it cannot allocate enough colors, but there is flashing in that case. Have at it if you wish.
Best regards,
Sparcmaster

Change color depth on pavilion 23

Is it possible to change the color depth on a Pavilion 23? Can you add software to add color depth? Sorry not really computer savvy! Thanks in advance!

The Pavilion 23-g010 is an All-in-One computer.
As noted, this specific model uses a 16cm x 16cm motherboard (AMD CPU), referenced as Femto AIX,
manufactured by T&I for HP.
The Intel standard (released August 2012) for All-In-One motherboards is Thin-ITX, (17cm x 17cm), with a height restriction of 2.5 cm (some cases permit height up to 3.5 cm)
Several manufacturers provide motherboards in the Thin-ITX form factor for custom builds by advanced DIY users.
This video shows what is involved, in such builds.
http://youtu.be/eNL6DuBtFNg
Tech Report
http://techreport.com/review/24785/intel-thin-mini-itx-platform-nine-months-later
Hardware Secrets
http://www.hardwaresecrets.com/article/The-Do-It-Yourself-All-In-One-Computer-Standard-from-Intel/17...
gb

[Solvedish] Can color depth be changed in X with no xorg.conf file?

I have a laptop that's working perfectly with no xorg.conf file except for the color depth is at 16 and I want it at 24. Can color depth be changed in X with no xorg.conf file? (I already tried the amazing three line xorg.conf file to no avail.)
Last edited by skottish (2008-03-09 03:15:11)

Won't work on a running X session, and has the same effect as the aforementioned xorg.conf file if run before starting X.
I may just have to make a new xorg.conf file. The last one decided it hated some upgrade I made and started wreaking havoc all over my system. Crashes and lockups and flickers galore!
--EDIT--
It turns out that the xf86-video-intel driver was my problem all along. I reverted to the i810 driver and my xorg file works again (it has more than three lines).
Last edited by skottish (2008-03-09 03:16:45)

Change color depth of shared screen?

I'm using ARD 3.2 on Mac Pros running 10.4.11.
First of all, I'm not asking about changing the color depth when viewing a screen with ARD. I would like to adjust the color depth when using the "*Share Screen...*" feature to put my screen on 10 other machines for demo purposes.
When viewing a screen there is a little slider to change among B&W, Grayscale, Thousands, and Millions. There is no slider or any preference that I can find for sharing, but I was wondering if there might be a plist or pref file that can be modified either client-side or on the ARD admin computer.
I need to have millions of colors, but all it will do is thousands. Anyone know if this is possible? Thanks.

Hi *,
here's a little guide how to patch the Screen Sharing application so it'll allow adjustment of the color depth in full screen mode:
http://www.macworld.com/article/135649/2008/09/screensharingbuttons.html
Hope this helps,
Joern

Adobe Reader changes system color depth settings to 256 colors

I am writing here for a friend who has a Windows 7 system and Adobe Reader in version 9.4
Each time he opens Adobe Reader the system settings for color depth are changed to 256 colors, which makes PDF documents barely readable. It is possible to change the color depth back to normal in the system settings, but each restart of Adobe Reader switches the system again to 256 colors.
Does anyone here have a clue how to stop this behaviour of Adobe Reader?
My friend has tried to remove Adobe Reader and reinstall it, but the problem remains.
Since I am a Mac user my Windows abilities are very limited and I am very grateful for any help.
Thanks a lot,
macvet

Could be a hardware malfunction. Maybe you should take that MacBook to an Apple store and have it checked out.

How do I change Imac OS 10.7 color depth?

Im using an Imac with Mac OS 10.7.3. I am trying to use a Citrix to open some files but I get the error message that display is configured for 65536 colors and is not supported. I need to us 24 or 32 bit color. I cannot figure out how to make this change. Under system preferences>Display I see nothing that allows me to change depth to those levels.

Got to Displays icon in menu bar. When click on it I see the following. (see image below). Still can't find where to choose color depth.

Did iSight change my color depth?

I just installed an iSight camera and shortly after, I realized that my monitor's color depth had downgraded somehow.
For instance, the flat greys on the left and right of a Safari window toolbar come out like greyish teals; and skin tones in photographs and video appear posterized and flat due to the lack of colors.
I've checked my display settings in System Preferences: the colors are still set to "Millions". I even tried unplugging the iSight... still nothing.
any thoughts? Was it a Quicktime or OS update?

Installing iSight did not change my display's color. I do not know anything you listed that might have caused your color shift.
I apply all updates to QuickTime and Mac OS and have never had such a problem. Do you use an update process such as How I Update My Mac OS X?
Have you recently performed your regular Mac OS X maintenance? If not, do so now. That may restore your settings.
Have you (or someone else who has access to your Mac or your Monitor) changed any monitor settings? You do not say what monitor you use. Perhaps it has external adjustments that may have been bumped out of adjustment?
You might also want to check your System Preferences > Displays > Color settings to see if it has been changed by someone.
If none of these things help you, try a search in Mac mini Discussions for "display color" (without the quotation marks) and see some of the suggestions there. The Mac mini users who post there may have better suggestions for you than I do.

Change Color Depth Remotely?

Does anyone know how to change the color depth on multiple clients, using ARD, without restarting? Is it a simple UNIX command?
Example: A student runs an OS9 application that changes the color depth from Millions to 256 Colors. When you try to Observe that machine, after the student has quit the program, the picture is all garbled (ARD has trouble viewing 256 colors).
I want to be able to remotely change the color depth back to Millions from 256 Colors without restarting. Can this be done??

You can if you install cscreen (freeware) which allows you to change resolution and pixel depth via the command line. Once installed (and it can go pretty much anywhere), you just use the Send Unix Command function with the path to the cscreen utility and the appropriate settings. Here's the full syntax:
Usage: cscreen [-d <depth>] [-x <width>] [-y <height>] [-r <refresh>] [-s <display>] [-v] [-m] [-f] [-l] [-h]
[-d <depth>] : specifies the bit depth (bits per pixel)
[-x <width>] : specifies the width in pixels
[-y <height>] : specifies the height in pixels
[-r <refresh>] : specifies the refresh rate in Hz
[-s <display>] : specifies which display to use (defaults to main display)
use a as the option to -s to specify the action on all displays
[-v] : display valid modes (use -s to specify display or nothing for the default)
[-m] : require an exact match
[-f] : forces settings (ignores safety mechanisms; USE AT YOUR OWN RISK)
[-l] : lists the current displays and modes
[-p] : sets the requested display to have the menu bar
[-h] : displays the usage

Does duplicating layers from an 8-bit PSD reduce the color depth of a new 16-bit edit?

I have been using several versions of Photoshop over the years starting with CS3, then CS6, and finally CC. Through 2012, all my RAW files were converted using 16-bit color depth in ACR. However, in examining my files recently, I noticed all were in 8-bit color-depth, which likely happened once I upgraded to CS6 and ACR left 8-bit as the default. As such, I now have hundreds of images that I wanted to edit in 16-bits that have been converted to 8-bit starting with my ACR export. The files are all RAWs from cameras like the Canon 5D, 5D Mark III, Olympus OMD EM5, and Sony RX100.
I have 8-bit PSDs of my edits of these files which contains multiple layers. I use features from the Nik and Topaz collections for noise reduction, contrast enhancement, black and white conversion, and sharpening. I also use layered Photoshop features like Selective Color. I want to know if I can simply duplicate the layers from the 8-bit PSD files onto a new 16-bit RAW converted background layer rather than re-edit each and every file. There would be no change in the crop of other reasons why the layers would not match up, but I am concerned that duplicating those layers might throw away the benefit of moving to 16-bit since they were created in an 8-bit color-depth.
As a test, I looked at a few files where I had pushed the shadows and colors to an extent and duplicated the layers from an 8-bit conversion to a 16-bit conversion and could see no difference. I am not sure if this is because Photoshop has become very good at reducing color-depth without a perceptible difference or if I am throwing away information in moving the layers.
I work off of a fairly modern computer and a top-end Eizo CG276 self-calibrating monitor and good video card. I am extremely sensitive to color and shade changes as well.
Thanks for any help, I am a bit stressed at the thought of re-editing hundreds of files from step 1, but it is important to me that I not throw away color information and it is better I start re-editing now rather than years from now.
Ketan

While raw file contain a 8Bit jpeg previews image in some color space. The RAW sensor data is not a color image and has no color space and the bit dept of pixels depend on the manufacturing. Most sensor produce one value for each pixel 10 to 14 bit seems to be common. Sensors only measure the light intensity not color. If front of each pixel sensor is a color filter which lets Red or Green or Blue light be measured for intensity.
A RAW converter can convert your sensors RAW data into a color RGB image in any color work-space in 8 or 16 bit color depth. No Adobe update went around and scanning your computer looking for 16bit color depth images and convert all of them to 8bit color. Your ACR workflow settings may have been change from 16 bit color to 8 bit color by you or set to 8bit by some update or script used. So you current ACR work-flow setting may be converint tou raw datya into 8bit RGB images. As long as you have you raw files you can reprocess these to produce 16Bit color RGB Image by makinf the proper ACR work-flow settings. You can also change your 8bit image to 16 bit image mode. However this will not recover any color quality lost or posterization that has set in.. It will give you a bit more latitude using Photoshop filters which may help you not get banding posterization.

Color Depth Change/Banding

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