Envy 14 Radiance question

Hi,
I recently bought an hp envy 14 off ebay with the radience screen. Although it is a very good screen, some shades of grey seem to be 'moving' with little dots almost like a grey picture on a vhs tape. The shades that seem to have this are numbers:
5,6,7,9,10,11,13,14,15,25 and by far the most noticable is number 30 on lagoms black level test page
Black level - Lagom LCD test

On the same page, the mot notiable effect of this is the background box surrounding the black level header. Also this is not only in the browser but also on applications such as the adobe cs5 install screen. Please could someone with a radience screen say if they have this problem as well, and if it is fixable or a known issue.

Thanks
Stanley

 

I just realised that this might be temporal dithering according to lagom's site. Also I found that the grey tones only appear like this when on the 5640 gpu. When on the intel gpu, I the same numbers are affected by 'static dithering' which looks like a cross patten. I find this less irritating than the temporal dithering (if that is what it is), and so if if this is a universal problem among all radience displays, then there might be a way to make the 5650 gpu reproduce the greys as static dithering like the intel gpu.

 

I think its called temporal dithering. Its common from what I gather and its usually noticeable mostly on contrasting regions like you said. I don't have my radiance anymore but I noticed it on mine and it was kind of annoying. I don't know of any fixes or even if it can be fixed cause I think that's just how the LCD works.

 

the only weird thing I've noticed on my radiance (and promptly forgot about) besides the screen being way way waaay too blue was that there were these small diagnoal lines on the menu bar if you moved a windows around (well they're everywhere but show up better on grays and the aero menu bar)

 

Yeah I get the same thing. I get similar symptoms on my 22" LCD as well.

 

It's just how some LCD's are. My MacBook Pro has it a little bit.

 

I brought that up somewhere around here a while back. Cool to know there's a name and an explanation behind it.

 

Coincidentally enough, I also just purchased an Envy 14 off of eBay recently and I'm seeing the same dancing pixels / speckling issue in gray areas. At first I was concerned, but after seeing the this thread (and after having forgotten that there are plenty of LCDs out there that perform dithering tricks), I'm convinced that what we're seeing is not a defect per se, but a result of how the radiance panel was designed.

Just my 2 cents.

 

yeah. since it's constant across all of 'em. It's on purpose. I don't really notice it ever.

the more noticeable issue I've seen was increasing/decreasing the brightness (and holding that button down) while watching a fullscreen video.

slideshows suck. Though you don't normally hold down fn+f3 while watching a video.

edit: huh, it doesn't do that anymore on mine.


Maybe bios F.23 fixed that ('cause I didn't have that bios on here until recently)