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Re: Re: Nice discussion! (Reply to this comment)
by paulphoto,  in Computer Hardware
...I seem to have found a monitor which offers both 8 bit and an extremely fast refresh at 2ms (by my depth calculations for it anyway based on manufacturers specs) which is the Samsung model that I mentioned...
I agree. I just bought a new Samsung Syncmaster 720N for a friend, and noticed a couple that were 8-bit with a 5ms and 6ms response time. It seems that the technology of LCD is improving as we speak. The nice thing is that if the manufacturer did not provide the color depth, the information should be disclosed in terms of "display colors", I notice that if it is 16.7 million, it has to be 8-bit, if 16.2 million it's got to be 6-bit. But the majority are 6-bit, not just Samsung, of course.
I think Samsung make pretty good LCD monitors. I have bought and tested quite a few of them, including 740N and 720N models.
Again, you had a pretty good discussion here to help people decide between LCD and CRT.
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Jan 04 '07
12:59 pm PST
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Re: Thanks (Reply to this comment)
by dmezzer
Hi,
On paper the HP has a faster response time over the Gateway (5ms vs 8ms) with pretty much everything else being identical except that the HP has built-in speakers...
(I was looking at an HP Pavilion 19" Widescreen LCD Monitor (W19B) and a Gateway 19" Widescreen Flat-Panel TFT-LCD Monitor, Model: FPD1975W)
Not sure if these are thoe models you were comparing, but I'd recommend seeing them side by side if you can and choosing the picture that you like the best. They might be very close on paper, but you may prefer the clarity of one over the warmness of the other. very much a matter of personal preference at this point.
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Jan 04 '07
8:04 am PST
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Thanks (Reply to this comment)
by jennings2003
Great stuff.
I'm looking into monitors myself right now and I'm torn between the HP and Gateway 19" WS LCD HD.
Any real differences that you might know of?
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Jan 02 '07
11:10 pm PST
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Re: Nice discussion! (Reply to this comment)
by dmezzer
Hi,
Thanks for taking the time to comment and providing some detailed additional and corrected information on how CRT/TVs work.
As for the color depth vs refresh rate discussion, I seem to have found a monitor which offers both 8 bit and an extremely fast refresh at 2ms (by my depth calculations for it anyway based on manufacturers specs) which is the Samsung model that I mentioned. Again, I guess manufacturer specs can be suspect and your comment will make me research the a little further for my monitor.
I also tend to agree with your preference for high end CRTs and although I made the switch this time to LCD, I understand the reasons one wouldn't choose to go that way.
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Jan 02 '07
10:22 am PST
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Nice discussion! (Reply to this comment)
by paulphoto, in Computer Hardware
Thanks for a thorough comparison between LCD and CRT technology for the general readers who are trying make an informed purchasing decision. One comment, though, on your description of CRT monitors. You mentioned that
The technology upon which CRTs are built on is much like that of your TV where light is projected onto the screen from inside in the back of the unit to create an image on the outside of the front of the screen.
Your description is true if it is for a rear projection (large screen) TV but not for CRT TVs.
CRTs (or TVs) are not built that way. CRT stands for Cathode-Ray Tube; electrons are being accelerated from the anode (back of the tube) onto the front tube (TV screen). The back screen of the front tube is coated with tiny dots (red, blue and green) of phosphorus material. Three of these combine to produce one pixel (like a triad). Each dot can turn on in red, blue or green when hit by electron with various energy. The dot glows and produces image on screen. The resolution can be varied by controlling the spread of electron beams. Due to accelerated electrons, this is why CRT monitors have to be carefully designed to minimize hazardous harmful radiation. If light just hits the back screen, no heat will produce and no radiation (which is LCD's characteristics--minimal heat, less energy consumption, no harmful radiation). But for electrons, heat can be generated, and thus the true characteristics of all CRT monitors and TVs.
LCDs use fluorescent (flat) tubes to emit light waves onto the liquid-crystal cells, sandwiched between sheets of material. These cells twist as electrical charge passes through. The twist will change the characteristics of light that passes through, acting like a polarizer. Because LCDs use light to pass through layers of thin-film transistors (TFT) to produce images on screen, they don't generate heat as much or at all compared to CRTs; even harmful radiation. Because of their active- or passive-matrix technology, viewable light is generally much brighter than CRTs.
Also, in addition to your comment on LCD's 6-bit/8-bit color depth information (which many manufacturers do not provide) is via the response time. Generally LCDs with faster response time under 12ms maybe using a 6-bit color depth -- basically a compromise for speed at the expense of true color...
Personally, I like CRTs (the very expensive ones) because of their higher refresh rate and excellent clarity of color and depth. But I like LCDs for their less energy consumption, smaller footprint, no excessive heat.
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Jan 02 '07
8:18 am PST
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