So both lcds I'd considered using (the samsung 150mp and the NEC 1545v) are 300:1 contrast.
Why would I use 300:1 over 400 or 500:1? Does anyone know of easy-to-strip LCDs with a CR higher than 300:1?
What is the "optimal" contrast for these projectors?
Why would I use 300:1 over 400 or 500:1? Does anyone know of easy-to-strip LCDs with a CR higher than 300:1?
What is the "optimal" contrast for these projectors?
I think 300:1 is probably plenty, depending on your expectations. Lots of people have used this or lower and been very happy with the image quality.
Question is....why would u get a NEC1545 or Samsung 150MP if you can the benq for the same pricing. 400:1 to 450:1 CR. Get the 557s or 567s series...S series S series S series S series......
thanks for the suggestion!
I honestly had just not really looked at the benq. I'll take a look at them. Thanks!
Here's a question though -- is there a point of diminishing return re contrast ratio? Can the contrast be *too* high?
I honestly had just not really looked at the benq. I'll take a look at them. Thanks!
Here's a question though -- is there a point of diminishing return re contrast ratio? Can the contrast be *too* high?
hmmm.
okay. I must just be completely off-base here. I'd thought that a higher contrast ratio would mean more light blocked, therefore, at a certain point, the contrast ratio would actually block so much light, we would have to turn to unpractical lighting solutions for our projectors.
sounds like I'm just plain wrong!
okay. I must just be completely off-base here. I'd thought that a higher contrast ratio would mean more light blocked, therefore, at a certain point, the contrast ratio would actually block so much light, we would have to turn to unpractical lighting solutions for our projectors.
sounds like I'm just plain wrong!
hmmm...so let's talk color depth.
I see from the many posts on the 567s and 557s benq lcds that they use dithering to achieve their color depth.
Two questions:
What strippable LCDs have true 24bit color?
Do those who are using the bennyq notice artifacts or color problems?
I'm using a sharp QA-1150...and the colors don't looks *that* bad, so I expect I'll be happy, but I wanna do it right.
I see from the many posts on the 567s and 557s benq lcds that they use dithering to achieve their color depth.
Two questions:
What strippable LCDs have true 24bit color?
Do those who are using the bennyq notice artifacts or color problems?
I'm using a sharp QA-1150...and the colors don't looks *that* bad, so I expect I'll be happy, but I wanna do it right.
I was the one complaining about the 18bit panels benq uses. Most manufacturers use these panels (most of the current 16ms panels for example).
Anandtech is looking into it at this moment and they will report any negative consequences this has in their followup of the LCD article due to come out this week.
What I notice with these panels is that evenly colored scenes (like a brick wall or snowy mountains) lack detail.
Another (BIG) disadvantage is that when you have to adjust your brightness setting you will loose even more of the precious 18bits you have, which will worsen the above loss of detail.
Thirdly you will loose the access time I guess, as the interpolation needs more than one refresh to give a pixel its color.
This means that in fast motion scenes pixels will never get their color as it is shifted before its interpolated.
Fourth: you will see a noise over the entire panel. (I can see it on my panel, but not on my projected image)
I don't know if Anand will agree with above mentioned points; most of them are not important when you don't blow up the picture to 80" 😉
Still, I feel manufacturers should state any interpolation in their specs. At this moment its impossible to find out if a LCD monitor has a 24 or 18 bit panel.
(At least BenQ promised me they'd change the specs for the interpolated models to 16M colors instead of 16.7M but i don't know if they will actually do that)
Anandtech is looking into it at this moment and they will report any negative consequences this has in their followup of the LCD article due to come out this week.
What I notice with these panels is that evenly colored scenes (like a brick wall or snowy mountains) lack detail.
Another (BIG) disadvantage is that when you have to adjust your brightness setting you will loose even more of the precious 18bits you have, which will worsen the above loss of detail.
Thirdly you will loose the access time I guess, as the interpolation needs more than one refresh to give a pixel its color.
This means that in fast motion scenes pixels will never get their color as it is shifted before its interpolated.
Fourth: you will see a noise over the entire panel. (I can see it on my panel, but not on my projected image)
I don't know if Anand will agree with above mentioned points; most of them are not important when you don't blow up the picture to 80" 😉
Still, I feel manufacturers should state any interpolation in their specs. At this moment its impossible to find out if a LCD monitor has a 24 or 18 bit panel.
(At least BenQ promised me they'd change the specs for the interpolated models to 16M colors instead of 16.7M but i don't know if they will actually do that)
hmmm...good points
I am looking to make my projected image roughly 110" diagonal, so I'll be going big. I'm already going that size with my qa-1150...scary, huh?
too bad I don't know anyone doing this so I can scope out results in person!
I am looking to make my projected image roughly 110" diagonal, so I'll be going big. I'm already going that size with my qa-1150...scary, huh?
too bad I don't know anyone doing this so I can scope out results in person!
rapsac said:
You can get new Acer AL1531 for about 379 EUR from Germany (maybe in your country too). That panel does have 500:1 CT, 16 ms RT and real 24-bit color (8-bits/color). See
this link.
Acer is one brand of BenQ, but I don't know for sure which panel they use for this AL1531 (which also got DVI). Also unkown how easily it can be stripped.
mhelin,
I'll eat my benq fp567 if that panel is 24bit. It would be the 1st 24bit 15" panel Acer uses in 2 years.
MANUFACTURERS LIE IN THEIR SPECS!
Thats the whole point.
I'll eat my benq fp567 if that panel is 24bit. It would be the 1st 24bit 15" panel Acer uses in 2 years.
MANUFACTURERS LIE IN THEIR SPECS!
Thats the whole point.
they use out of context statements... true color means that it has a true color input. it's the smallest on the market means it's the smallest on the market opposite the office.
i dont know if i agree with rapsac about interpolation, although he has really raises some very convincing points overall. if interpolation takes 16-30milliseconds, this would be really crap and can surely not be true or i would be ****ed. maybe he means that it takes 16-30 milliseconds to to adjust between one shade of color in 225k shades. or maybe he means that the dithering chip is clocked synchronously with the refresh rate. i have no idea. i must investigate. i expect that the benq uses high quality dithering that takes place entirely in hardware before the palette reaches the screen and that it works at at least 200 mhz. i would really like to see more on this.
i dont know if i agree with rapsac about interpolation, although he has really raises some very convincing points overall. if interpolation takes 16-30milliseconds, this would be really crap and can surely not be true or i would be ****ed. maybe he means that it takes 16-30 milliseconds to to adjust between one shade of color in 225k shades. or maybe he means that the dithering chip is clocked synchronously with the refresh rate. i have no idea. i must investigate. i expect that the benq uses high quality dithering that takes place entirely in hardware before the palette reaches the screen and that it works at at least 200 mhz. i would really like to see more on this.
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