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DPChallenge Forums >> General Discussion >> LCD Monitors
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Showing posts 1 - 9 of 9, (reverse)
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08/22/2003 04:40:02 AM · #1
Does anybody out there have an LCD Monitor which shows all the greyscale blocks on the voting pages? I now realise that mine, a Sony SDM-M81 is letting me down badly - I lose at least five blocks no matter how I set up the display. This means I lose important detail at either or boths ends of the brightness spectrum and others see things in my submissions that I miss! The monitor is now 18 months old, before they invented nits and contrast ratio, but I would like to know whether a newer LCD monitor can be up to the job - incidentlly I use DVI video.
Thanks in anticipation.
08/22/2003 04:51:19 AM · #2
I can certainly see all the blocks on my laptop screen (6 months old)- I have my doubts about colour rendition though, but it's not so way out it causes me problems.

ED
08/22/2003 06:35:28 AM · #3
I can see all the colors too and my laptop is pretty old. I don't think the brightness is as good though. I do think I lose a lot of detail and I guess I edit my images to suit my screen, so they don't necessarily come up as well on normal screens.
08/22/2003 09:12:10 AM · #4
The contrast spec for that monitor seems to be 300:1, similar to many older models. Many of the newer models at the mid or high end offer 400:1, 500:1, and I've even seen one spec'd at 700:1(!). This makes a vast difference in being able to differentiate between fine gradations of brightness.
08/22/2003 11:06:19 AM · #5
Thanks for your help so far. I am surprised that you (Ed e301) can see all 29 blocks (each 24 pixels wide 29 pixels high)on your laptop - I lose the top two and the bottom two on my year old Dell laptop.
kirbic - please, where did you pick up the 300:1 spec figure - I haven't been able to find a spec figure anywhere in the documentation.
There is an argument that says with only 256 bits, one shouldn't need more than a contrast ratio of 250:1 but maybe my physics is wrong.
I am really looking for someone to tell me they have a new LCD monitor and they can see all 29 blocks - telling me what monitor it is, so I can go buy myself one!
08/22/2003 11:12:07 AM · #6
I'm not sure if they all show on my Dell laptop at home (though I usually have the contrast set all the way up, so they probably do), but my Apple Cinema Display HD at work definitely shows them all. The darkest two sort of run together, especially when the sun is bright (there's a window on my right), but I can see the division.
08/22/2003 11:13:04 AM · #7
Originally posted by hughletheren:

Thanks for your help so far. I am surprised that you (Ed e301) can see all 29 blocks (each 24 pixels wide 29 pixels high)on your laptop - I lose the top two and the bottom two on my year old Dell laptop.
kirbic - please, where did you pick up the 300:1 spec figure - I haven't been able to find a spec figure anywhere in the documentation.
There is an argument that says with only 256 bits, one shouldn't need more than a contrast ratio of 250:1 but maybe my physics is wrong.
I am really looking for someone to tell me they have a new LCD monitor and they can see all 29 blocks - telling me what monitor it is, so I can go buy myself one!


I just googled it... entered sony sdm-m81 specs

Regarding only needing 250:1, I can't support or refute the argument, but I know that the high-contrast LCD displays are far superior. I'd take a CD with some photo & test images & go to a store where you can compare.
08/22/2003 11:15:46 AM · #8
Check for a gamma setting...if your gamma is turned down significantly, that might be the problem.
08/23/2003 06:29:09 AM · #9
Thank you all. Maybe we should draw a line under this now. I will go searching the retailers with my disk of the greyscale image!
James - thanks for your input re gamma but surely gamma only effects midtones? I have played some more with screen brightness and am now losing only a couple of blocks.
I loved your tutorial on channel convertion for black and white - have had endless fun and learned a great deal, thanks!
Kirbic - thanks - Google is wonderful, should have tried it myself. None of the Sony data gives spec figures for either brightness or contrast.
Hugh

Message edited by author 2003-08-23 06:29:55.
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