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Dumb viewing angle question

post #1 of 17
Thread Starter 
This could be important to others deciding on widescreen vs standard aspect ratio screens:

I know that widescreen's are touted as having better viewing angles, especially horizontal, but also vertical. It has been widely discussed here that WXGA 15.4" has far better vertical viewing angles than SXGA 15".

However, if someone was choosing between standard XGA 14.1" or 15" vs WXGA 15.1", how much difference would the better vertical viewing angles make in normal day-to-day use???
I do realize that a lot of people here don't care about standard XGA.

For example:
Typical XGA vertical viewing angles: +15°/-35°
Typical WXGA vertical viewing angles: +50°/-50°

How much difference would that make in keeping the screen in its sweet spot in real world use??

I am quite aware that the widescreens have far superior horizontal viewing angles, but those are only truly helpful if doing a presentation or watching a DVD with someone else.

The question is on VERTICAL angles ONLY, XGA vs WXGA.
I have only spent a few minutes here and their on a WXGA system, so I would like to know from someone who has spent time with both.

Would insufficient vertical viewing angles even be an issue with XGA ??

Thanks,
Andrew
Austin, TX
post #2 of 17
the issue isn't the resolution/aspect ratio, it's the manufacturers. The WXGAs all have good angles because only good manufacturers are making them. The SVGA+ on the Asus M6BN has the same (just about) good viewing angles as the WXGA. Seems the WXGAs are slightly better overall but the perceived huge difference is that a lot of manufacturers can use cheap 4:3 LCDs but don't have a lot of choice on the WXGA ones.
post #3 of 17
Thread Starter 
I am just basing the question on specs, as stated:
Typical XGA vertical viewing angles: +15°/-35°
Typical WXGA vertical viewing angles: +50°/-50°

with the question:
Would insufficient vertical viewing angles even be an issue with XGA, or would this only be noticeable on the higher resolutions??

Andrew
Austin, TX
post #4 of 17
Thread Starter 
bump
post #5 of 17
Quote:
Originally Posted by aamsel
Would insufficient vertical viewing angles even be an issue with XGA, or would this only be noticeable on the higher resolutions??
It has nothing to do with the resolution, I think it's just the quality or cheapness of the panel. It seems like the white box type laptops mostly use older tech 4:3 panels, which explains the bad viewing angles. I think a13antichrist is right about the WXGA panels.

I have been wondering the same thing you are though, because I've gotten the impression from following the forum that on some models the XGA screens might have better viewing angles than the same model with an SXGA/SXGA+ screen. I think it has to do with the specific panels used though and not the resolution. I guess it's possible that some manufacturers are using better quality XGA panels than SXGA, since a decent XGA screen is probably generally cheaper than a decent SXGA screen.

Anyway, I think it depends on the specific model of notebook. Some brands XGA might be better than their SXGA, while others might have the same narrow viewing angle.

I wouldn't mind hearing from people who have been able to compare two of the same machines with both XGA and SXGA screens.
post #6 of 17
Thread Starter 
I do agree with you on the "cheapness of the panel" issue, but still want to know if or why the WXGA would almost always be better than an XGA.

As for specs, look at the following.
I got this from the Business HP's since they are top quality panels, and HP is among the few to publish full specs:

nc8000 XGA ±45° Horizontal, +15°/-35° Vertical
nc8000 SXGA+ ±60° Horizontal, +40°/-45° Vertical
nx7010 WXGA ±65° Horizontal, ±50° Vertical

So you see...HP's nc8000 SXGA+ is a better panel (on paper) than their XGA panel.
HOWEVER, the nx7010 WXGA beats both of them.

What I want to know is...why does the nx7010 beat both of them??? Is it just because it is a WXGA???
That doesn't really make sense.

Andrew
Austin, TX



Quote:
Originally Posted by bloke
It has nothing to do with the resolution, I think it's just the quality or cheapness of the panel. It seems like the white box type laptops mostly use older tech 4:3 panels, which explains the bad viewing angles. I think a13antichrist is right about the WXGA panels.

I have been wondering the same thing you are though, because I've gotten the impression from following the forum that on some models the XGA screens might have better viewing angles than the same model with an SXGA/SXGA+ screen. I think it has to do with the specific panels used though and not the resolution. I guess it's possible that some manufacturers are using better quality XGA panels than SXGA, since a decent XGA screen is probably generally cheaper than a decent SXGA screen.

Anyway, I think it depends on the specific model of notebook. Some brands XGA might be better than their SXGA, while others might have the same narrow viewing angle.

I wouldn't mind hearing from people who have been able to compare two of the same machines with both XGA and SXGA screens.
post #7 of 17
Andrew,

Every normal aspect screen ive seen does have worse vert viewing angles than the widescreen. But i havent seen very many normal aspect screens. It seems the local super stores are overloaded with widescreens.

The only example i can come up with is a 15" XGA HP screen that i saw vs a 14.1 Sony sxga+ (non xbrite), The HP screen had better viewing angles, but not by much. The sxga+ was really bad though. It was really hard to see the same colors on tthe top and bottom of the screen.
post #8 of 17
Thread Starter 
I would just like to know:

1.) Is this going to be always...are WXGA viewing angles always going to be better than XGA???

I am not asking for any other comparisons of WXGA to SXGA+, since SXGA+ has typically not been thought to have as good of viewing angles as XGA or WXGA.

2.) If WXGA is always (or usually) going to have better viewing angles than XGA, my question is: WHY?????

Thanks,
Andrew
Austin, TX
post #9 of 17
I think the answer is yes, im pretty sure widescreen is going to have better viewing angles both vert and horizontal. I couldnt tell you why though, since im pretty sure its not a quality issues. Even the known "good" normal aspect screens are worse than the mediocre widescreens.

I wish i knew why man...
post #10 of 17
Thread Starter 
Does anyone know why viewing angles on any widescreen WXGA would be better than viewing angles on any XGA???

I don't understand the reason for this???
I truly can't understand why this would be the case?????

Andrew
Austin, TX
post #11 of 17
Fujitsu, Sony and Toshiba have all sold models with excellent quality wide-viewing-angle SXGA+ and XGA screens, so it's not impossible.
post #12 of 17
Ive seen a sony 14" sxga+ (no xbrite) and it was horrible.
post #13 of 17
I keep hearing that that 14.1" SXgas suck in general. SXGA should only be on 15" and up.
post #14 of 17
Thread Starter 
Well, until recently it was that all 15" SXGA+ were bad, had gradient issues a lot, and limited viewing angles.

It has also been discussed and established here that WXGA has far better viewing angles than almost all SXGA+ of any size.

My question was not about SXGA+, it was about XGA vs WXGA, since it makes NO reasonable sense why XGA would have worse viewing angles. Plus or minus 50 degrees verticle, for example, doesn't exist on an XGA panel, yet it does on most WXGA's where I have seen published specs.

Andrew
Austin, TX
post #15 of 17
i know this doesn't answer ur question... but for those 15.1" SXGA+ screens... there's some really different ones out there that give different view angles...

a couple of Asus M6N's i seen at school have very good view angles, but a gateway i saw at costco - one side of the screen would turn black if i move my head a bit to the side

i guess most of the time you would have to see it in person to really tell... cuz i posted links to 15.1" vs 15.4" lcd comparison videos that showed crappy view angles on the 15.1" M6N, but it's different when i see in person

as for xga vs wxga... try looking for manufacturer specs first... then try to find one offline to confirm
post #16 of 17
Thread Starter 
Please read!!
You are missing my point and my real questions:

I did find manufacurers specs, I posted them above, and they are very close to specs I have found for other XGA and WXGA LCD panels.

I don't need to research it, since I have confirmed it.
Even the best XGA panel specs I have found do not compare to average WXGA specs.

Again, I only had what amounts to fairly straightforward questions:

1.) Since WXGA have better viewing angles, why is this the case???
2.) What is there about a WXGA panel that would give it better viewing angles than an XGA???

And PLEASE, don't reply with anything about SXGA+ since that was not the question.

I am comparing XGA to Widescreen XGA, and just asking what makes these panels different???
If nobody knows, that is fine.

Thanks,
Andrew
Austin, TX



Quote:
Originally Posted by jw95275
...as for xga vs wxga... try looking for manufacturer specs first... then try to find one offline to confirm
post #17 of 17
aamsel:

Since it seems that you were the only one to quote some spec figures, let me add to the confusion.

Dell's specs for Inspirons stipulate the same brightness 150 cd/m2, viewing angles horizontal +/- 40 and vertical +10/-30 degrees, and contrast ratio 250:1 for 12.1" XGA, 14.1" XGA, 14.1" SXGA+, 15" XGA, and 15" SXGA+ screens.

The 15" UXGA has 180 cd/m2, horizontal +50/-60 and vertical +/-70 degrees, as well as contrast 400:1.

Finally, all 15.4 wide aspect screens (WXGA, WSXGA+, WUXGA) have 185 cd/m2, horizontal +/-65 and vertical +/- 50 degrees, and 300:1.

These specs are "worst-case" in the sense that all screens (which come from several manufacturers) should meet them, although some manufacturers tend to deliver screens with much better specs.

Note that the 15" UXGA is the only 4:3 aspect screen with high specs which carries the Ultra Sharp trademark, otherwise currently appearing on the 15.4" screens only. This Ultra Sharp variant was introduced about two years ago, when cheaper 15" 4:3 UXGA screens were available as well.

I think other posters provided several plausible answers to your questions.

Among several possibilites, I would bet on the following one, more or less mentioned before.

I guess WXGA has better vertical viewing angles than XGA in most manufacturer's offers simply because WXGA is based on a more recent technology, which allows manufacturers to achieve better viewing angles at a cost that is competitive with the cost involved in producing XGA screens with the older technology.

I am not saying that it is not possible to produce better XGA screens; I am just pointing out that, as with any other hardware, the products available on the consumer market must have a competitive ratio of cost to perceived quality. In other words, apparently manufacturers could deliver XGA screens with better specs, but their cost might be too high in order to find sufficiently wide demand.
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