M4600 IPS Screen Corner Tint

Actually there is. I was only on sites where reductions were applied, but on the main site, you see the IPS upgrade for the 17 inch. Horribly expensive; by the way, there is also the Quadro 5010M, at...2200 euros the graphic card upgrade!!!

 

Can you show me the worst case?

 

Horribly expensive is relative. The HP 17.3" panel is a $650 upgrade and the Dell is $550. Both without any discounts.

HP is offering an 18% discount which gets them to $550.

Dell offers us around 25% off, so it gets the M6600 ips upgrade down to $440.

 

I said that about the overall laptop price: with a similar config as the M4600, I ended up much higher in price, in general. I agree with you about the IPS upgrade, in itself it is cheap here. But the M6600 platform and the choosen components are simply to expensive for me! So this is why I gave up on the IPS option for now...although it would be good to hear about people having the IPS on the 6600!

 

Not sure how can i, there will be only my word for this . as i posted already, my first panel is worst, anyone can tell it leak pink/green even if you stand far away. after panel got replaces the intensity reduce, the tint/leak placement also moved depend on the panel, i know this because i had around 5 panels replace already. as of right now i dont have an IPS panel anymore. not sure if i want to go back there again but dell denied any compensation for the downgrade.

 

I was waiting the M6600 with IPS, but reading this thread and some other threads put my purchase on hold. I already went through a really bad experience with my Sony Vaio F's wide gamut screen, I don't want to go through that again. My choice for this panel is not only because of the wide gamut, it's also the quality offered by the IPS panel and color accuracy. Based on what I read here the quality has lot to desire. With my experience with photos of LCD screens I can imagine that this issue is worse when you see it in reality than what we can see in the photos posted here.

I have this configuration at work, but I also use my notebook at home, at ... and to carry around an external monitor is not an option.

All the people I know, who switched to IPS monitors don't want to go back to monitors with TN panels, and it's not because of the viewing angles. If you don't see the difference or it doesn't matter to you then I agree with you, go with another monitor which offers what you need.

While there are other notebooks with wide gamut displays, most of them are 6 bits TN panels including my Sony Vaio F. If you like vivid, saturated colors this can be perfect for you, but those are not for any professional use (even if we ignore the bad manufacturing quality of some of the LCD panels used in these notebooks). Not to mention the uneven back-light, glossy surface, ... .

The panel used in the XPS 15 L502X is a B+RGLED panel, which is a type of WLED using blue led and two phosphors to obtain white. It is much cheaper to manufacture then RGBLED and offers a pretty good gamut!

So this rises my question: Why there are no B+RGLED, 8 bits, matte, IPS panel out there ? This should be much cheaper then RGBLED, but still provide the necessary gamut. This could use Optimus because it's only 8 bits, and would be much more accurate than the existing 6 bit panels. IPS would offer all the advantages to use this screen for photo, video and other professional use.

 

Yes, in your case I agree with you. In mine I think I will be satisfied with having the good standalone screen only at home, and keep the FHD WLED integrated display for all other uses. And the standalone screen will for sure have none of the big defects of those high-end laptop IPS RGBLED displays on the M4600 and other models...and I will have more battery life with optimus.

I agree completely. The first model of this kind will be remarked by all notebook testers I think!

 

I recommend reading this post: http://forum.notebookreview.com/del...0-15-6-mobile-workstation-18.html#post8098937

@Youthere2 says his display has no such problems. I will start bohtering Dell again to exchange my display for a good one, although I would also like to see any review of M6600 IPS screem before.

 

I am considering a Dell M4600 with IPS panel, so I have read this thread with great interest. I note however that:

- the one person whose isue seems to be fixed has not posted further details
- some people have not had their issue fixed after multiple repairs
- no-one has posted to say that they have an M4600 with this panel and don't have the problem
- no-one has posted colorimeter measurements of the non-uniformity

So it is hard to tell if this is a systematic fault, and isolated fault, and how bad the non-uniformity is.

Reading the datasheet for what I understand is the panel used here
http://monitor.espec.ws//files/lp156wf3-slb1_546.pdf

they specify a 13-point uniformity measurement (but on luminance only, not on chromaticity) with a typical luminance change of 1.4 and a max of 1.6. That sounds low, until you read the equation used

δ WHITE = Maximum(LN1,LN2, ….. LN13) ÷ Minimum(LN1,LN2, ….. LN13)

so that is 1.4 times and 1.6 times, which is quite large.

Does anyone have measurements of the colour shift, and does anyone have an M4600 with the IPS panel that does not have this defect?

 

@ChrisLilley
just to clarify Dell use lp156wf3-slb2 not lp156wf3-slb1. i am not sure of the different but i guess there shouldnt be a big different.