Dual Monitor HP LP2475w, Brightness and backlighting difference

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  01 January 2012
Dual Monitor HP LP2475w, Brightness and backlighting difference

I've bought a HP LP2475w one year ago. Then I decided to buy a second one in order to have the same display specs so I avoid color difference and the like.
But I have the poblem that, there is certainly a visible difference in color and brightness between the 2 monitors. Strange. The newest monitor is way more bright and backlighted than the other. It's annoying, especially when I have a black screen, where we clearly see a strong and disappointing backlighting resulting in "ghost" or "grey look. The first one has nice black levels.
There are also difference in colors.
I'm using display port cables, and switching between them didn't improve the situation.
Is it normal?
And will a color calibrator such as the xrite i1 display (that I ordered) solve this issue?

Thank you for answering
  01 January 2012
No two monitors are identical, even of the same make and model. Also as monitors age their color reproduction and intensity will drift further and further away from the original state. By adjusting things like backlight intensity and using calibration software and a colorimeter they can get pretty close to a known profile and match one another.
  01 January 2012
Thank you olson for your answer.
I was also thinking that age is a factor, but the strange thing is that my old one is looking better than the new, that's the problem. The older one's brightness (backlight) is really nice and black levels are good, while the backlighting on the new is annoying, displaying a "ghost" or grey effect on black screen.
Can you tell me how to reduce backlight intensity? Is it brightness that you're talking about? If it's brightness, then reducing it unfortunately reduces also the overall tone aspect of the display.
Thank you again for helping, it is really useful
  01 January 2012
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