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I have two 9300s, one with Samsung, one with LG

post #1 of 10
3/26/05 at 2:05am
Thread Starter 
Edit: reposting in correct forum
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As I posted previously, my first 9300 arrived last week with the Samsung display (K9922). Yesterday, my second 9300 arrived with the LG screen (J9662). The first machine has the 6800 card, the second has the ATI 128mb card.

First off, let me say that the colors are better on the LG. If you look at the Dell background the blues are bluer, richer. However, if you look at white screens the LG looks grainy, like they sprayed something on it. It is enough such that I prefer the Samsung to the LG.

I have been planning on sending back the first 9300 with the Samsung just because i bought the second machine with a 35% off coupon (effectively). At this point I am wondering if I should save myself & dell some trouble and just swap the screens myself before sending the machine back. Or try Dell technicians and hope i get a good Samsung screen.

Gerry
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post #2 of 10
3/26/05 at 2:06am
Thread Starter 
Ok, some more information.

With the samsung screen and the Nvidia 6800, i played with the contrast and set it at 125% and now the colors look about same between the LG and the Samsung. Just the samsung looks clearer on white text.

Gerry
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post #3 of 10
3/26/05 at 2:06am
Swap the screens. They are the same so they will not care...
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post #4 of 10
3/26/05 at 2:10am
Well, they care enough to use two different part numbers for the different displays.

gerry, instead of adjusting contrast, try dropping gamma correction on the samsung to around 0.85 and see if you like that better.

edit: could you also compare brightness between the two? Adjust the brighter one downward until it matches the darker one, and tell us which was brighter, and how far you had to drop to match.
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post #5 of 10
3/26/05 at 2:15am
Thread Starter 
dellbert--reducing gamma helps, but it appears i still need to increase contrast (not as much when i reduce gamma) to get a comparable picture.

Gerry
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post #6 of 10
3/26/05 at 2:29am
Hi , Gerry, Try to compare the brightness between both LCDs and let us know. On my taste, the skin color is too red on 0.85 gamma correction. I set between 0.88 to 0.91. You can also increase a bit of "Digital Vibrance". It will help the color too. I also found out that reduce a bit brightness on the driver (not the hardware) will improve the reading of black text on the white background.
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post #7 of 10
3/26/05 at 2:30am
I just leave every the way it is and then decrease gamma to 0.89 and it looks amazing.
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post #8 of 10
3/26/05 at 2:32am
I increased the Digital Vibrance level to the same as the rest of the brightness and gamma bars.. .and I love it... that's the reason why the Sony Sales guy asked how come Dell is using Sony's XBrite screen.....

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post #9 of 10
3/26/05 at 6:37am
The Vibrance should compensate for the low color saturation of the Samsung screens to a large degree. It likely increases the amount of color difference added to each primary color channel (R'-Y' to R', B'-Y' to B', G'-Y' to G'). One limitation is that pure primaries or secondaires can be made brighter (which might cause some slight clipping on some colors), but not more saturated - negative lobes are impossible on a display (can't go below a level of 0). Another small error results if this processing is performed on gamma corrected color channels.

I guess the more technical explanation would be: Turning it up a bit makes the color look alot better.
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post #10 of 10
3/26/05 at 10:12am
I think the lesson here is that a shipped screen of whatever make is not always to the users taste. I have a 9100 with Samsung screen (XPS2 on order) and initially thought the screen was fantastic. However, I noticed when I opened a folder the name section of a file was the same colour (white) as the date section. I lowered the brightness and the name section became darker (IE previously the two colours were not distinguishable). I now see colour diffences on webpages where there wasn't before. I much prefer the screen now, although it is slightly darker than before
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