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Posts: 14
Registered: ‎05-16-2010
Location: Los Angeles
Message 1 of 10 (1,591 Views)

T61p WUXGA LCD brightness uniformity acceptable?

 

Thats a photo of my T61p WUXGA screen in a totally dark room.  The brightness is set to max (and in the bios) so this is the absolute max brightness the backlight can do.  The image on the screen is a totally black image (0,0,0) and no color correction/management is being applied.  I took this photo as dead on as I could.  As you can see, there is a lot of light bleed/non-uniformity at the bottom and to a lesser extent on some of the corners.  This T61p is only 2 weeks old (refurbished) and still under warranty.  I will be primarily using this laptop for image and video editing so image quality and uniformity is my utmost priority.  So with that in mind, does my display seem like its still within spec or should I request service for the screen?  Also, post calibration (Spyder 3 Elite, software v.4, 6500k) the white point brightness at max backlight is ~86 cd/m2.  Thats a bit lower than what I'm used to working with.  Does anyone know if thats also out of spec?

Posts: 21,009
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Registered: ‎12-19-2008
Location: Australia, Melbourne
Message 2 of 10 (1,567 Views)

Re: T61p WUXGA LCD brightness uniformity acceptable?

my T61p had this problem too, and no they won't replace the LCD as it is considered within spec. 

Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
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Posts: 14
Registered: ‎05-16-2010
Location: Los Angeles
Message 3 of 10 (1,559 Views)

Re: T61p WUXGA LCD brightness uniformity acceptable?

Hmm.  Would a new screen be much better?  Even if I had to do it at my own expense?

Posts: 21,009
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Registered: ‎12-19-2008
Location: Australia, Melbourne
Message 4 of 10 (1,557 Views)

Re: T61p WUXGA LCD brightness uniformity acceptable?

you will only find out by trial and error. 

Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
HDMI
Posts: 159
Registered: ‎08-16-2009
Location: North Carolina, USA
Message 5 of 10 (1,515 Views)

Re: T61p WUXGA LCD brightness uniformity acceptable?

There are some extraordinary external monitors out there for $300 and much less. Hook it up to the VGA port on the left side of your machine.

 

You can also use this as an "Extended screen". Keep your editting software on the T61p and your photos on the new monitor!

HDMI
Posts: 159
Registered: ‎08-16-2009
Location: North Carolina, USA
Message 6 of 10 (1,510 Views)

Re: T61p WUXGA LCD brightness uniformity acceptable?

I forgot to say in my previous post that your TV MAY  have a VGA input itself. Many of the newer models do.

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Posts: 14
Registered: ‎05-16-2010
Location: Los Angeles
Message 7 of 10 (1,498 Views)

Re: T61p WUXGA LCD brightness uniformity acceptable?

Thats kind of defeating the purpose of a laptop.  I've already got the mini dock with DVI and I have a few high end monitors at home but it doesn't make me feel any better about the screen attached to my laptop.

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Registered: ‎11-23-2007
Location: USA
Message 8 of 10 (1,488 Views)

Re: T61p WUXGA LCD brightness uniformity acceptable?

Generally speaking, WUXGA LCDs used on T61p (and on W500 later on) leave a lot to be desired in most cases, at least in my opinion.


You may want to try and locate a LG LCD for your machine, since they're more acceptable than the Samsung ones (and given the description, I suspect yours is a Samsung) but it won't make a tremendous difference.


For really high-quality picture you can either revert to T60/p with an IPS screen, or W700 if you need the horsepower of a modern CPU/GPU.


Good luck.

Cheers,

George




In daily use: R60F, R500F, T61, T410

Collecting dust: T60

Enjoying retirement: A31p, T42p,

Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W




Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.
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What's DOS?
Posts: 2
Registered: ‎05-31-2010
Location: TOKIO
Message 9 of 10 (1,448 Views)

Re: T61p WUXGA LCD brightness uniformity acceptable?

Great post! It's very nice. Thank you so much for your post.

 

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Posts: 14
Registered: ‎05-16-2010
Location: Los Angeles
Message 10 of 10 (1,374 Views)

Re: T61p WUXGA LCD brightness uniformity acceptable?

Actually, according to this:

 

http://www.thinkwiki.org/wiki/TFT_display#TFT_Displays_as_found_in_ThinkPads

 

If my Samsung display is a LTN154U2-L05, then the brightness is totally off-spec.  About half of what the manufacturer says it should be.

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