BenQ new VW2420/EW2420 VA panel with LED backlight.

If it passes the black crush/white clipping lagom test, exhibits minimal ghosting and/or other movement related artifacts and can manage reasonable input lag ... it could be a winner.
 
NCX said:
Ordered the EV (256$ CAN @ NClX), should be here within the next 3 days. We will soon see if its truly 3,000:1 and has decent motion performance.
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The EV? Sorry, I couldn't quite tell from tracking the discussion on the thread... which monitor did you get, the Eizo, or the BenQ ?
 
BenQ

It Passes all the Lagom Tests

It fails the Prad Red Box Ghosting test though just like the C-PVA panels.
http://www.prad.de/new/monitore/testsoftware/schlieren2.html


Watched part of one movie, there was no ghosting, however the film was very dark and didnt feature any reds on grey backgrounds so we will see. The PixerPixAn Flag test is the same as a TN panel while the racer car has minor dark streaks, however it doesnt have a double image like a 5ms TN would.

by dark I mean Altitude Blu-Ray
3544cc650a9ebfc2.png


Im finished calibration and have calibrated with both Eye One Match 3 and BasICColor. Contrast ratio is 3036:1 @ 121.44cdm/2

I will be making a new thread with the EW2420 Review in it, including PQ comparions to both the Acer G245H (TN) and Samusng F2380Mx (C-PVA), as well as a Youtube video Review.
 
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NCX said:
Im finished calibration and have calibrated with both Eye One Match 3 and BasICColor. Contrast ratio is 3036:1 @ 121.44cdm/2
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Awesome.

Do you intend to measure input lag? Do you have the necessary hardware to do so?

Also curious, what constitutes a "fail" on the Prad Red Box test?
 
NCX said:
I will be making a new thread with the EW2420 Review in it, including PQ comparions to both the Acer G245H (TN) and Samusng F2380Mx (C-PVA), as well as a Youtube video Review.
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Really looking forward to your review, I enjoyed your other Youtube one on the G245H :)
 
aa004 said:
Luisito or Tropiciel did your units come with any backlight bleeding like in NCX's review? http://wecravegames.com/forums/gadg...3-000-1-ansi-contrast-led-monitor-review.html
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Not at all. But keep in mind that i keep the monitor with zero brightness and everything disabled (except AMA).

The only place i can "see" the leds are on the bottom, if there is something light gray on it (typical status bar), and then you can see (if pay really attention) the "shadows" between the leds. But only if you are trying to see them, and you are close enough.

Have never tried any good monitor before, so perhaps i'm easily impressed, but i'm very happy so far.
 
Thanks for the reply.

Hmm, zero brightness. I can't do that with my monitor, the picture is too dim, but mine is a low contrast IPS. But even at zero brightness backlight bleed shines through on mine all the same so it doesn't help deepen black much.
 
Well mine didn't arrive yet :/
It will maybe next week... although I thought I will see it sooner.

I saw a buyer's comments (in Poland) and he stated that backlight was even / uniform ( VW2420 ).
Well it's actually my only fear with this product. But I wouldn't choose any other probably.
I need one, and the only 24'' LED VA now offered is the BenQ.
So... I'm waiting :-/
 
Probably I can get a EW2420 tomorrow and make a direct comparison with my Nec EA231WMi.
Hoping that VW2420H and EW2420 have the same panel and backlight...
 
Here's a link to a couple more user reviews developing:

http://www.pcmonitors.org/reviews/benq-ew2420-initial-impressions
http://forums.overclockers.co.uk/showthread.php?t=18200742

PCM2 at overclockers.co.uk bought an EW but is returning it because the slow pixel response time is unacceptable to him. He gushes over the contrast though - "the contrast on the EW2420 is just phenominal".

Edit: NCX, on page 3 they link your review too, and PCM2 noticed your backlight bleed problem, it seems he doesn't have any bleed with his. Well, thats reassuring. But, now his comments on the ghosting makes me queasy, haha.
 
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I'm hoping that the monitor that NCX tested was a stand alone unit that had higher backlight bleeding. This monitor does seem to hit spot on with the contrast ratio expectations though :)
 
I would love to but I actually have to purchase these monitors. If I wanted to test the BL I would have to pay a 15% restocking fee and an additional 200$+ tax. The stand on the BL is awesome but definately not worth the near 200$ premium.
 
If you have some question... I'm using the EW2420.

In the whole, I think it's a good product for the price.
There is some light filtering in the down-right border of the panel.
A bit annoying but nothing so shocking.

My model has a color temperature of 6800K.
To obtain the 6500K I must set RGB respectively to 100, 90, 90.
With brightness regulated at 0% there is already 80 cd/m2.

Very deep black.
Very clean graphics and vivid colors.
Low viewing angle compared to 23 inch E-IPS panel.

If you need a sRGB low-budget monitor for graphic applications... get the Nec EA231WMi.
For other tasks this BenQ can be a nice alternative.
I do not consider gaming because this is the only field where TNs are good...


P.S.
This VA panel shows a bit poor representation of dark tones.
I think it's not due to color calibration.
It seems more a viewing angle problem.

P.P.S.
Showing a black image in the dark room...
The brightness uniformity is decent.
The little problem I mentioned is not visible.
I would have expected a deeper black.
The screen is more black than with the ea231wmi but not so much.
 
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Well, i thought it would be better to have visual proof instead of verbal opinions, so...

BL2400PT

Backlight



A picture



Gamma shift, i suppose



All of those are made with a crappy digital camera with a lot of barrel distortion, a "tripod" (sort of), on a dark room, and with the same settings:

sRGB
exposure time 0.5s
aperture F/2.8
iso 64
focal lenght 5.4
custom white balance
exp bias 0

The monitor setup is DVI, AMA on, brightness 0, contrast 40, sharpness 1, picture mode standard, everything else disabled
 
Thanks, your black looks fantastic.

The third pic makes it easy to finally understand how VA gamma shift can apply to a centered viewer.
 
Those settings are incredibly dark (under 50cdm/2) which is why it looks so black. Mine looks like that as well with those settings.

When you lower the contrast below 75 it offsets the gamma as well, hence the bad gamma shift.
 
Well... I have to remind that it is important what was the distance of the camera from the monitor. The closer it will be, the stronger the effects on the shift.
Without that information, there is still some room for speculation.

Regards,

Lukas
 
tropiciel said:
Well... I have to remind that it is important what was the distance of the camera from the monitor. The closer it will be, the stronger the effects on the shift.
Without that information, there is still some room for speculation.

Regards,

Lukas
Click to expand...

55 cm (aprox 21 inches) from monitor to the camera lens.
 
NCX said:
Those settings are incredibly dark (under 50cdm/2) which is why it looks so black. Mine looks like that as well with those settings.

When you lower the contrast below 75 it offsets the gamma as well, hence the bad gamma shift.
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Well, i always do that... take the brightness down (my eyes don't like too much monitor light on dark rooms), and then up the contrast until i like the image.

I don't notice the gamma shift like that on normal monitor use and with low ambient light, only with the lagom test screen, so for me it's not a problem. Every panel tech has it's drawbacks, i suppose.

Coming from an old TN (and for this price), this is heaven :)
 
luisito said:
Well, i always do that... take the brightness down (my eyes don't like too much monitor light on dark rooms), and then up the contrast until i like the image.

I don't notice the gamma shift like that on normal monitor use and with low ambient light, only with the lagom test screen, so for me it's not a problem. Every panel tech has it's drawbacks, i suppose.

Coming from an old TN (and for this price), this is heaven :)
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How's the ghosting?

NCX said his EW2420 failed the Prad box test, but passed the Lagom tests, is it the same for you?

Have you tried any games on it? Again, any noticeable ghosting/trailing or input lag?

Thanks.
 
NCX said:
http://wecravegames.com/forums/gadg...3-000-1-ansi-contrast-led-monitor-review.html
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I've already read the review (and am currently watching your Youtube one :)), but I wanted to know what luisito felt the ghosting and input lag was like since it's so subjective.

Edit:- I've just finished watching it, great video review. Just one thing, is it possible for you to do some video footage of you playing some games like Left 4 Dead or if that's too much, the Prad bouncy box test? I don't know if it's possible to capture ghosting or not, but I'm interested to see it in action.

Thanks for all the effort you've gone through NCX.
 
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Cameras have their own trailing/blur problems, making it impossible to actually capture motion performance in games.

The Prad box is doable, but will most likely be off putting. The ghosting effect on the red box never actually comes into play in games/films.
 
Good video review NCX. The Allan Wake video scene was an excellent choice for your demo. The night setting provides plenty of blacks and the indoor scene in the diner provides plenty of bright color mixed in with the darks to really demonstrate why a large contrast ratio is important for IQ. I liked what I saw in that diner scene - colors popped and dark was really dark. Same with the very end of the video displaying the Jericho menu, bright colors on dark darks demonstrating great contrast, gaming should look fantastic notwithstanding pixel reponse time.

You can see that backlight bleed halo around the edge of the screen throughout your entire video and its really terrible. A shame, because it defeats the whole purpose of a VA monitor which is the blacks. Get that thing back to the store stat! I for sure am going to buy the dead pixel policy just in case for easy returns - it's only 15 bucks.

You mention it came with 2 cables? In the unboxing video Linus said it comes with only a DSUB VGA cable so I was going to order DVI-D cable with it. Did yours come with a DVI-D cable?

Thanks for showing the viewing angles, while I wish it was better I think I can live with that. IQ seems great in the area where one would normally be sitting in front. From head on in the pitch black room black was pretty dark too despite the bleed. LOL to the "why are you viewing from this angle, you're a retard and should be shot". A little arrogant but good for a LOL.

My only wish is that you had extended the review with some video of standard desktop usage and gaming. Common websites/images that we're all used to and standard games that we've might have seen so that we have a frame of reference to judge what we're seeing on that monitor.

http://www.youtube.com/watch?v=s90Hl8LU75Y (linky for the video review, watch at 720p+)
 
Godmachine said:
Can't find this monitor anywhere instock online in the US , lame.
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I know it's weird. ++++US doesn't even have any BenQ monitors listed at all the last time I checked while their Canadian site sells plenty of BenQ monitors.
 
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bearbear said:
I've already read the review (and am currently watching your Youtube one :)), but I wanted to know what luisito felt the ghosting and input lag was like since it's so subjective.
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As already stated, I have an unusual setup, so i don't think my opinion is really useful, but..

Yes, there is ghosting with some transitions/colors. No, there aren't "visible artifacts" with AMA (wrong colors and something like that), at least that i can see. No, the ghosting doesn't matter at all playing games at 60fps (i have more problems getting rock solid 60fps from games in windows, but that's another matter :)).
About the input lag, I don't feel it when playing. Will try something more time critical later on.

PD: I have done the readability test of PixPerAn. The first time scored a 5, the second i scored an 8, if that it's something that counts...
 
aa004 said:
You mention it came with 2 cables? In the unboxing video Linus said it comes with only a DSUB VGA cable so I was going to order DVI-D cable with it. Did yours come with a DVI-D cable?
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Mine also came with both cables (well, and the audio one, so that's three :D). And i really wasn't expecting it...
 
Just a thing:

The panel on the BL2400PT is half glossy, half matte (i don't know if it's exactly a 50-50), so i believe it's the same coating for the BL an the rest of it's "brothers".

And now a doubt.. why people use the sharpness setting? Mine was at 2 or 3 by default, and i don't know what it does. I assume that's some kind of filtering to the image, but, if i'm going through DVI, digital and all, then why mess with the image? What's the point?
 
These are my settings for 6500K gamma 2.2.

Brightness: 0 (80 cd/m2)
Contrast: 50
Sharpness: 2
Color temperature: "User Mode"
Red: 100
Green: 86
Blue: 87

This is the ICC profile with the EyeOne Display 2:
EW2420_6500K.icc

Increasing the contrast I have a color solarization.
You know that the "contrast" for LCDs is only a fake setting, emulated changing the color lookup table (LUT).
I leave the factory value (50) because I want that LUT remain untouched.
Why do you think 75 is a better value?


P.S.
Yes, also RGB controls affect the monitor LUT.
But this is necessary to change color temperature.
The panel factory temperature is very cold.
 
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