Colour Transition Or Shading Probllems

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leeworth

n00b
Joined
Oct 10, 2007
Messages
4
Hi. I bought an Acer AL2423W fnew for £500.00 after I had read several reviews praising it and looking at the specs by rights it should be a good buy seeing as it is one of Acers professional range monitors.
The problems are with colour transition I think you would call it. When playing video from DVD or any other source the image is very patchy, especially noticable with dark scenes which look very patchy and almost pixelated almost like watching a low res DIVX movie.
The same goes for general graphics, it is noticable when playing games especially dark atmospheric ones like Bioshock.
And worst of all when Editing photos. I do a lot of black and white photography and it's almost inpossible to edit a photo with Photoshop CS3 because there is no smooth transition between shades.
I'm hoping someone can help with this problem and also hoping it is a problem that can be solved especially when you consider the price of this monitor compared to my 19" unbranded TFT i purchased 2 1/2 years ago for £120.00 which had no issues like this.
Please look at the images on 'Jean-Daniels' post for example images as he is having exactly the same problems as me.

http://hardforum.com/showthread.php?t=1096025&page=9

Using

Acer AL2423W
Windows Vista Home Premuim 32Bit
AMD Athlon 64 X2 6000 Dual core 3.00 GHZ
2GB Mem
Geforce 8800GTS 640MB
Nvidia Forceware 163.69

Thank you very much in advance for any help you may be able to offer
 
Well, the main problem is the video is bieng upscaled from whatever resolution it was recorded in. Most standard DVDs are recorded in 480, which when upscaled to your native 1920*1200 is going to have serious pixelation. The only way to avoid it is with good DVD software and good hardware accelerion, but it will still be present on dark scenes.

I switched from Power DVD to Win DVD 8, to get support for nVidia TruView or whatever it's called. The new nVidia control panel also has some filtering options for video, to reduce noise and sharpen dithering.

Bottom line is, if the source video is bieng scaled, you will get some artifacts somewhere.
 
Now with the photos, you probably need to calibrate your monitor. Hardware calibration is best, but there is a display optimization tool in the nVidia drivers that work pretty well.

The gamma is the key to smooth gradiants, and with your VA panel, you will still notice horizontal shift. VA panels are darker when viewed head on, and lighter when view from the side. This can not be calibrated out, it's the way the pixels are aligned in the panel.
 
Thanks very much for your responses, they are much appreciated.

I don'rt think it's a problem with the original resolution that DVD's are recorded in as I have looked at other friends setups with a 24" monitor and the image quality is perfect even with WM Player, and have never had problems with bad gradients between shades on dark scenes before on whatever media players I have used.

As for photos the monitor has been calibrated using my Spyder2 Professional hardware and software so that wont be the issue there I'm afraid.

The problem with the very bad gradients between shades and the patchy effect seems to be in whatever the monitor is displaying, even down to the wallpaper so I dont think it's down to either the type of media player of calibrating. But needles to say I'm at my wits end with this and with the amount of money spent and lack of help from Acer Tech department is laughable.

Any more ideas would be appreciated, and thank you for the ideas already posted.
 
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