Hazro - Any Update?

s1ick said:
Is yours also professionally configured or are you both taking backhanders from hazro?
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My 26Wi not colour calibrated. My settings are brightness/contrast/sharpness at 50/50/50. Using 6500k colour temp, and rgb at 85/85/85.

My backlight is very even.

I have never once had an incidence of this snow, so clearly my monitor doesn't have this issue. I have nothing but praise for this monitor and I have high standards.

Like I say, I just get some SLIGHT banding on vertical gradients on test images which in practice hasn't been noticable once.

I'll just fix the banding issue when the firmware update comes along.
 
Just for everyone else who is thinking of purchasing atm,

Im getting banding horizontal and vertically, its not really bad but its noticable.

No green snow or lines, TBH if I had any of those symptoms the monitor would be going straight back to OCUK as it wouldnt be fit for the purpose it was intended.

Back light wise, as has been mentioned before my bottom left corner is significantly brighter than anywhere else. However its only noticable on really dark/black frames.

After all that I'm still quite happy with it, its a lush monitor, the input isnt noticably laggy and it looks incredible from whatever angle i view it at.
 
For those with banding.....

guys, can you test something for me with these gradients? Save and view the following image in full screen using windows picture and fax viewer (F11 makes it full screen)

<edited as jpeg was possibly adding some compresion gradients>
try this for horizontal gradients: http://www.tftcentral.co.uk/downloads/Colour_Gradients.exe

Do you get any banding on gradients?

Then rotate the image in windows picture and fax viewer, you will probably then see some obvious banding of the gradients. is this what you are seeing when you report banding problems?

what happens if you now zoom in on that image so it's not being squashed onto the screen by windows picture viewer? it should clear the banding and gradients should look smooth again i think

i've just been playing with it on the HZ26Wi as was worred for a minute it was suffering from same vertical banding issue, but i think it might be more to do with the gradient file being viewed! zoom in and tell me if banding still remains....
 
Baddass said:
Do you get any banding on gradients?

Then rotate the image in windows picture and fax viewer, you will probably then see some obvious banding of the gradients. is this what you are seeing when you report banding problems?
Click to expand...

I actually noticed this before mine went back, zooming in made it disappear at a certain point - this made me firmly believe it's the scaler which is causing this.

Got a video on my phone I may upload.
 
Baddass said:
guys, can you test something for me with these gradients? Save and view the following image in full screen using windows picture and fax viewer (F11 makes it full screen)

http://img178.imageshack.us/img178/1931/gradientimagecoloursfo1.jpg (its a 1920 x 1200 sized image)

Do you get any banding on gradients?

Then rotate the image in windows picture and fax viewer, you will probably then see some obvious banding of the gradients. is this what you are seeing when you report banding problems?

what happens if you now zoom in on that image so it's not being squashed onto the screen by windows picture viewer? it should clear the banding and gradients should look smooth again i think

i've just been playing with it on the HZ26Wi as was worred for a minute it was suffering from same vertical banding issue, but i think it might be more to do with the gradient file being viewed! zoom in and tell me if banding still remains....
Click to expand...

There is some minor banding but rotating it shows the full on banding. It's worth noting too at either orientation the green snow only seems to occupy the darker end of the purple gradient so defo a scaler chip issue in that colour range.

Be saving that image for use after Firmware update cheers!
 
hmmmn, yes that is odd. just tried it on my Dell 2405FPW and it doesnt do that vertically. it's odd that zooming in eliminates the severity of it, must be scaler chip related i suppose
 
I'm the chap who discovered the vertical banding wayyyy back in this thread, and before i sent my hazro back i had a good play with all the settings trying to improve it (this was before the firmware update was announced).

You won't get any horizontal banding with the right OSD settings. If you're seeing bands on horizontal gradients, try the following in the OSD: Colour Temp - 6500k, Contrast - 50. Brightness could be set to anything. The other pre-set colour temperatures were all fine too, but some custom RGB settings would introduce bands, so adjust them carefully.

The contrast control more than anything can cause bands to appear. If you still see horizontal banding, make sure you're not doing any contrast/gamma adjustments in the ati/nvidia control panel. My hazro had a native gamma around 1.9 and adjusting it to 2.2 in software did introduce some very minor banding to horizontal gradients (nothing as bad as the genesis chip related vertical banding though).
 
I'm just after reseting the screen to factory default and having a play to see if I can get rid of the horizontal banding that was present before it was reset.

So far on the image that Baddass uploaded I can't get rid of the horizontal banding - any ideas?

Even if i zoom in, I can still see it!

EDIT

My settings aren't too far if yours sid:

40 Brightness
50 Contrast
50 Sharpness

6500k Colour temp
 
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My screen bands both vertically and horizontally

settings are at 6500K with huey calibration.

45 brightness
50 contrast
76 sharpness

edit/ zooming seems to reduce horizontal banding a bit but not vertical
 
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Baddass said:
did you find the same thing as above with zooming in on vertical gradients?
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I did to an extent, it basically seemed that the amount of contrast in a gradient caused the scaler chip's processing to kick in and cause the banding artifacts. So i could make a white-to-black vertical gradient and viewing the entire image showed obvious bands, however, zooming in on a banded area could remove the bands that were previously on that area of the image. I would presume this is because the scalar chip is now only seeing a narrower (for example) light-grey to medium-grey gradient being displayed, and doesn't attempt to apply any 'correction' to it.

I tried a bunch of different colour-to-black gradients, it's just that the white is easiest to describe. If i had to guess i'd say any more than a 15-20% difference in colour on a perfectly smooth vertical gradient caused the image processing to kick in and bands to appear. Applying the slightest dither or grain to any gradient (ie. barely visible), breaking it's perfect smoothness, also deterred the scalar chip processing from kicking in.

On another note, i'm viewing http://img178.imageshack.us/img178/1931/gradientimagecoloursfo1.jpg that you posted earlier, and it shows clear banding on this diamondtron aperture-grill CRT that i'm using. I think the bands are in the image, maybe jpg compression artifacts.

I tried the original app it comes from (last link on this page) - http://lcdresource.com/mambo/index.php?option=com_content&task=view&id=28&Itemid=39

no bands. :)
 
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