Wierd Color Banding

I just got off the line with tech support and they are sending me a new video card...but I was wondering if anyone has had this problem. I woke up this morning and noticed some color banding in the upper right hand corner of my screen. Thinking these may be stuck pixels I moved some windows over the area and the banding left. When I opened a new finder window sometimes the banding would appear in the window other times not. So this is not a problem with the screen. I reinstalled the OS and still no luck...Apple is sending me a new video card...would this help even help? or is there something else I should look into?

radioheadjam-
It certainly sounds like a video card problem. Since they are sending you a new one I would suggest patience until you get it and give it a go.
My guess is, since they were able to narrow it down to something and give you an educated guess than they have heard of this before.
Luck-
-DaddyPaycheck

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How to prevent color banding in AVCHD files on import?

Hi!
I am trying to import some 1080 60i AVCHD files from my Panasonic G3 camera into iMovie '11. Once the files are imported they show very strong color banding/pixelation, that does not show up if I play the clips on the same computer/screen directly from the SD card in Quicktime player. Here is a screenshot from of the original frame, and here is exported movie.
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Finally found a solution to this problem:
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Quit Fireworks.
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How to display spectral lines in color band

I want to display a line spectrum in color band format. What I have are two arrays: wavelength and intensity. I can plot the graph like the bottom one and I want to convert it to the top color band. The considerations are:
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2. the line intensity is indicated by the line width of the color line. For instant, the 650 nm line is a strong one and its red line in the color band is the widest. The 435 nm line is a weak one so it is barely see (but still visible) in the color band.
I would like to know if labview has any built-in function to assist me with this job. If not, any idea of implementing this?
Thanks in advance for any suggesting.

I am thinking of an alternative way to implement this, but not sure if LabView can handle:
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2. Then, make the spectral line image as 2D, and put it in front of the color spectrum with the wavelength aligned. The picture below has the y-axis offset a bit to show my concept:
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My Camera Is Recording Color Bands Can Someone Help???

I use a samsung sc-hmx20c HD camera to record my ps3 video game footage
For some reason when i record there are red and blue lines of color either up and down or in circular directions.I use a tripod and turn all the lights off in the room.
The camera also automatically adjusts the brightness on its own which is annoying because it should stay the same when i set a custom white balance and set the shutter speed to 1/30 right?? . My Tv is a samsung plasma 1080i and i see no color bands but my camera sure does
Another thing, Should i be recording my gameplay in 1080i or 1080p. They both have the color lines and i cant figure out how to get rid of them. If someone could please help that would be awesome because this is frustrating me. Thank you very much here is a pic of it. look at the sky

Hi -
Bad News52 wrote:
For some reason when i record there are red and blue lines of color either up and down or in circular directions.I use a tripod and turn all the lights off in the room.
Those bands of color are called moiré. A simple explanation is that the pixels in your camera sensor are not quite lining up with the pixels on your monitor, which creates those weird bands. If your camera can lock focus (turn off the autofocus), the easiest solution is to lock the focus when the picture is sharp, then move the camera back slightly (say a half inch to an inch and a half) so the picture becomes slightly (slightly!) out of focus. See if that helps reduce or eliminate the bars.
The camera also automatically adjusts the brightness on its own which is annoying because it should stay the same when i set a custom white balance and set the shutter speed to 1/30 right?? .
You need to lock the exposure, not just the shutter speed. Setting the shutter speed alone will cause the camera to adjust its aperture to correct fur changes in screen brightness.
Another thing, Should i be recording my gameplay in 1080i or 1080p.
If you can lock the focus (turn off the auto focus), and lock the exposure (check your camera's owners manual for how to do this) I would start with 1080i and see what that looks like, If you are happy, then problem solved.
Hope this helps.
Message was edited by: Meg The Dog to fix typos

Images imported... some ruined with blank white and color banding

I'm using Lightroom 4... i've been importing my RAW images from my external harddrive. Some show up in the catalog as ruined with a blank white section and color bands. I've checked the actual image on the external hard drive and it is fine. I've deleted the ruined files from the LR catalog, then re-imported those problem ones... still come in as white with banding. I've even tried deleting them from the catalog, then from the harddrive... then back onto the HD from the camera, then back into lightroom. Some look ok until I look at then in loupe view... and the same problem happens. Meanwhile the images on the HD and on the camera's CF card are fine. Suggestions???

You have to troubleshoot and eliminate the bad hardware that is causing the corruption.
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Color Banding issue with FCP and Color...PLEASE HELP!!

Ok so heres whats going on and i'm hoping some can help me out here cause i'm totally lost!
So we have a film shot on HDV. The scenes are mostly dark and well lit. Everything in the FCP timeline looks great (little noisy but great). We brought it over the color and did our color grading and corrections. Once we returned back to FCP, we started seeing some major color banding. We then applied the neatvideo plug-in with helps with noise but it made it far worse.
We are rendering in 10bit but how can we remove this banding!!
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Yeah, you can't critically judge video quality on computer displays. They won't show you an accurate image. Unfortunately, there is no way to send a signal to a video display (HDTV, broadcast monitor) for this purpose from an imac.
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Why does my photo look normal in Adobe RAW, but when opened in CS6 it becomes strongly color banded

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Horizontal colored bands appearing in imported raw files

I just now started to have mostly magenta horizontal lines or bands appear in imported a Sony Nex 7 ARW files. When opening the same file with Sony’s raw converter or DXO Pro, the bands are non existent. I have noticed that sometimes but not always, the bands will disappearing in LR after I examine a photo by clicking on it to enlarge a selected area and the loading finishes. Exported photos will have the bands. Also, If I first open the files with IDC or DXO, the file will then import into Lightroom without the bands. I have run diagnostics on the SD card and the hard drive with no errors showing up. Running LR5.4 on a Macbook Pro. I’m totally confused. Any enlightening comments would be greatly appreciated. Thanks.
These artifacts are exactly like those in the post : Why do I get Colored bands on some images in LR4 and LR5, but not in Aperture?

I have the EXACT same problems when importing .RAF files from my Fujifilm X-T1 via a USB card reader (USB 2.0) on my MacBook Pro 13" Retina (late 2013) with OS X 10.9.3 in Lightroom 5.4. (I did not purchase the X-T1 until after I updated to 5.4, so I can't speak of whether this happens in other versions of LR)
I second sevenc's suggestions that this is NOT a hardware issue - I have tried 5 different SD cards, all formatted either on my computer or in the camera, reformatted several times (low-level format) and it STILL happens! Never with the JPGs, only with the RAW files.
However, doing a straight file copy from the SD card (in the card reader) to the hard drive before doing the import works fine - no artifacts!
Ditto if I use the internal SD reader (an internal USB3.0 connection) on the Macbook, no purple bands.
It is apparently unrelated to the OS, since this is happening both in Windows and OS X. I have posted a more detailed acccount here:
Lightroom 5.4 - "glitches" on my RAF->DNG conversions from X-T1 - Fuji X Post Processing - Fuji X Forum
One of the members of that forum has seen the same happening with Panasonic RAW files, but only when an external USB drive was connected at the same time.
When the external drive was disconnected, the images imported normally.
BTW, my Canon files import just fine, using the same SD card, the same USB card reader and the same computer - no glitches....
The most likely thing happening (my opinion) is that the Lightroom import process somehow interferes with the USB connection. It doesn't really make sense, because I am sure Lightroom uses the standard OS I/O file routines, but it seems to be the most likely issue. Is there a chance LR uses its own code for reading files off of external drives.
Other software (Aperture, Preview, Image Capture, Raw Photo Processor 64 or PhotoNinja) can import fine, whether the card is in an external card reader or not - no artifacts.
I have seen it the same issue described with Panasonic files on LR 4, so it does not seem to be limited to LR 5.4
Re: Why do I get Colored bands on some images in LR4 and LR5, but not in Aperture?
Anyone care to shed light on the issue and what could be going on here ? It seems the more obscure raw formats are affected (Sony, Panasonic, Fujifilm) and that Canon/Nikon users do not experience it (at least I haven't found it described online).
This is a serious bug, because unless you do a re-import of the RAW/RAF file, the image data is permanently corrupted. It is not an issue of corruption of the embedded JPG preview , it is the RAW file itself. Once it has been imported by Lightroom, it displays the artifacts in other programs as well (Aperture, Preview etc)
Trying to convert the image to another format, e.g. TIFF, JPG, BMP the artifacts are still there.
I hope this is taken seriously by Adobe, as it is a critical issue for those of us who are affected. I can work around it by copying the files to my hard drive first, but it shouldn't have to be this way....

Color banding in problems in FCP

I've been struggling with the color banding problem in FCP for quite some time now...
Source footage looks GREAT (smooth gradients from dark to light in the sky, for example).
Once I bring that footage into FCP - whether it is simply displayed in FCP or rendered as a QT (prores 422 - plus all other options) there is very noticable color banding in the gradient areas of the image.
The common answer on this forum is that color cannot be judged accurately on a computer monitor.... but the source material looks FINE on my computer monitor - no banding! But banding is very evident once I bring it into FCP.
Hoping somebody has the magic bullet -

Maybe the sky gradient example is a little abstract.... (since you don't have the examples in front of you)
More to the point -
If I render a simple fade-up from black - same result - really noisy banding that crawls through the as image as it ramps up from black.
Surely I must have something wrong in the way the preferences are set in FCP - 'cause I can't imagine this being acceptable to any editor or end user.... it looks pretty awful.
What am I doing wrong?
Anybody?
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Colored bands on exported master files

I have been using Aperture mostly for selecting, cataloging and processing RAW files. I recently had the time to import my work from film sources. These files open and display fine in Photoshop. I imported these files into Aperture projects and added key words. These files are tif and psd files without layers and between 12 to 40Mo in size. They all display fine in Aperture. I have not made any adjustments on any of the files. They are all RGB.
When I export a version from them, there is no problem. However, when I export the master, I get colored bands on the masters, any where from one band to 10 or more. Not all the files have this problem. I deleted some of the problem files from Aperture, reimported and tried again. To no avail. I also tried exporting the same master several times and sometimes the banding is no longer present after these several tries, which seems very odd indeed.
After export from Aperture, I open the files in Photoshop where I see this banding. When opening in Photoshop, some files get an error message saying the file was damaged by a disk error. The same file opened in photoshop without having been first imported into Aperture does not get this error.
I looked at some problem files directly in the Aperture library by opening the package contents and those files open in Photoshop without any banding.
Here is a link to a sample of what I am getting:
http://homepage.mac.com/shiyinjia/Aperture/colorbands.jpg
I cannot say for sure whether this problem existed before the 10.4.6 came out. But some of the files exhibiting this problem were indeed imported prior to this update. I am running Aperture 1.01.
I have searched on this forum for posts of similar problems and didn't find any, but if there were, please be so kind as to direct me to them! Thanks for any insights you might have into this problem!
Jeff
Powerbook G4 12 inch 1.33, PowerMac G5 dual 2.7 Mac OS X (10.4.6) X800 XT
Powerbook G4 12 inch 1.33, PowerMac G5 dual 2.7 Mac OS X (10.4.3)

Ok here is what I've found out. I imported the original without the banding into Aperture, on export to master I got the banding. Then I thought ok, I'll copy and paste the image in photoshop into a new document, flatten it and save it as a PSD again. I imported that. Export as master on this file also gives banding but slightly different. Then I decided to apply a light gausian blur to the whole image in photoshop. Did this, saved it and imported and then exported in Aperture. It does not have the banding.
I'm not sure what this means other than you have a corrupt file. It could be you have a bad hard drive, or corrupt media that it was stored on (cds can deteriorate as well as external drives.) Anyway, somewhere something has corrupted this file (and maybe othere stored on the same media.)
So as stated before make sure you back up your entire main hard drive ASAP. Don't just back up your photos, back up everything thats important to you.
Back up any non-duplicated info on any external drive you have as well. Then boot your computer using the a Mac OS X install disk and check for hard drive errors. Check all your externals for errors too. If nothings shows up, Disk Warrior might not be a bad investment, just for the piece of mind. Also back up any cd/dvds you might have photos stored on by copying the contents to your hard drive and then burning a new cd because if you have DVDs or CDs that are faultering, they're only going to get worse as time goes on.
This does not necesarily mean you have a bad drive or disks, but chances are if this is happening with multiple files there probably is a problem with your storage and it's better be safe than sorry. If this has happened to one or two files, it could just be a case of a bad file, that had an error while be written to, or just got corrupted.
Good luck.

Designjet 500 color banding

My printed images have a color banding throughout 90% of an image measuring 18" x24". The first 2 inches are fine and then the banding begins to appear. How does this get corrected?

Hello Wayne_L_Miller,
I am sorry, but to get your issue more exposure, I would suggest posting it in the commercial forums, since this is a commercial product. You can do this at http://h30499.www3.hp.com/hpeb/
I hope this helps.
Regards,
Happytohelp01
Please click on the Thumbs Up on the right to say “Thanks” for helping!
Please click “Accept as Solution ” on the post that solves your issue to help others find the solution.
I work on behalf of HP

HDV color banding

I'm making a new short film using the new Canon HDV camcorders.
I've been using HDV since 11/2003. Overall it is a decent codec, considering the output size. I have always been disappointed by the horrible color banding though-- it behaves rather like DV in this regard.
Our 10-minute film is nearing completion, and most of the camera shots look great.
BUT- we have an opening sequence that was created in Shake and After Effects. It is beams of light and "color trails" with some titling over it.
As you might imagine, these this sequence looks pretty bad -- it's loaded with banding and artifacting due to the HDV compressor.
What can I do? Should I use another compressor for the entire project (other than HDV)? Is there a way to have just the opening sequence render in the Animation compressor and the rest in HDV?
The opening Seq. is about 2 mins, the entire film is about 19.
The rest of the film looks good.
Can I edit in a sequence set to "HDV" and then switch the compressor to another codec for output?
How would this affect the rest of the material?
thanks
steven galvano

Interesting thought.... try putting some of the HDV material directly in a DVCPROHD timeline.. match the frame rate..probably 60i.. then you'll need to render it. Add the graphics, render and go...
Thing is, you'll need to render the entire sequence of HDV clips in a DVCPRO sequence... easier to have captured it as DVCPROHD I think.. the clips will need 4 times the storage space or so. Article is still there (second issue) last time I looked. You can trascode it to any HD codec, but DVCPROHD will playback from the same drives you're using for HDV or DV... course, uncompressed HD will require a lot more space, and a disk array.
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3D Text - Gradients are rasterized and causes color banding

Hi All
I have applied a 3D>Extrude and Bevel on my text. Now problem is that when doing it, my border(part that is extruded) causes a color banding, since it rasterizes
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How do I take away those nasty lines?
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Gradients are always rasterized when using the 3D effect:
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Wierd Color Banding

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