About monitors and LCD displays

I want give you some directrices about the display sub system.
Like you all know there are CRT monitors and LCD displays.
CRT
CRT monitors are based upon electron beams hitting Electroluminescent phosphorus. In these monitors the most important parameters are:
1) Dot pitch
2) Refresh rate
Dot pitch is the size of a single phosphorus point, smaller is better. Typical values range between 0.24 and 0.25. Beware with monitors having a not constant dot pitch, there are monitors with dot pitch of 0.24 at center of screen and 0.25 at the borders. I recommend monitors with constant dot pitch size across all screen.
Refresh rate is the number of times a single electron beam travels across the screen drawing a single frame (from left to right and top to bottom) each second. It is measured in Herz (Hz). Bigger is better. Typical values range between 60 Hz and 120 Hz and the value depends upon resolution, more resolution goes to less possible refresh rate. If you are going to play games with shutter glasses, make sure your monitor is capable of 120 Hz minimun at the playing resolution. In 3D Stereo, each full 3D frame must be drawn 60 times/second (60 Hz) but a 3D frame is a single right eye frame and a single left eye frame, 60 Hz for left frame and 60 Hz for right frame are the full 120 Hz. If you CRT is not capable of these 120 Hz your eyes will suffer fatigue / strain and you would have a great headache after prolonged time periods.
LCD
A LCD display do not uses a electron beam to excite phosphorus and generate colored points, instead this it uses a grille and a special lamp. Instead drawing a frame line at line from top to bottom and left to right, it renders the frame in a step only and continuously, these displays are flat for this, there is no necesity for high voltage and magnetic fileds to move the electron beam. In these displays these are the more important parameters:
1) Dot pitch
2) Response time
3) Number of colors (color space)
Dot pitch is the same as with CRTs
Reponse time is the time it gets going from pure white to pure black. Less is better. It is measured in miliseconds. Good typical values range about 16 ms. If you are going to use the LCD to play games, response time is the more important parameter at all.
Number of colors are the simultaneus colors in screen. It have a inverse relationship with response time. It is measured in million of colors or bits. 24 bits of color depth are 16.7 million of colors. Typical values range agout 16 / 16.7 millions. Greater is better. LCDs with 16 ms response time have, usually, 16.5 millions of colors.
Somethimes, the manufacturer will provide you drivers (setup or inf files) for your operating system. I recomend install this drivers. Don't panic if there are no drivers for your display device, Windows, probably, will find the suitable driver for your brand and model.
If you have a CRT and you are stuck at 60~85 Hz you will need the right driver because Windows would not have found a suitable driver from its drivers base and it chose a standard monitor driver.
If you have a LCD and you are stuck at 60 Hz, all is fine, as i have told you yet, LCD displays paint the screen continuously, you will not appreciate any flicker at 60 Hz in these devices. You can check this if you have a digital camera, make a photo of a CRT with a shutter of <monitor refresh rate> * 1.5. You will see a partially drawn picture. If you take a photo of a LCD with the same shutter rules you will get a full picture. With LCD you will get full pictures always, independently of the shutter.
I hope al this info will be helpful to you.

I have found a very interesting link on the Anandtech Web site about LCDs, it is a old one but i think it will be useful.
The link is this

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Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Not sure if this question should be here or not. It's about Thunderbolt ands DVI displays.

On the Thunderbolt info page on the main Apple site, it states that it is possible to put a Thunderbolt Display in the same daisy chain as an Apple LED. How about 2 DVI displays?
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D.J. Ross wrote:
I recently bought two new monitors (same model) and have them connected to my Mac Pro--one with DVI and the other through a KVM switch using a VGA-DVI adapter. The problem is that the second one (connected through the KVM) displays in the wrong resolution. When I open the Displays preferences, it looks like it's using a profile from my previous monitor and the Display tab shows the wrong list of resolutions.
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What happens if you click "detect displays"?
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Paul...
Here are some ramblingthoughts on your issue. They expand on the good advice you've already received, and thus do not dispute what others have said.
Make certain your drivers for the graphics card are the latest and greatest. This is the first step you should take. You probably have already done that. If not, go do it. But check the next paragraph first.
If your graphics card has a DVI output, by all means use it. If it doesn't, opt for a different graphics card, preferably one with two DVI outputs, known as a dual-head graphics card. I address this again below.
Life is too short to drink cheap wine. It's also too short to spend a professional career working with inadequate computing resources, especially when you consider the cost of the capital outlay versus the salaries and the wasted time fooling around trying to make things right. If your employer has artificial limits on spending, go make a business case for better gear.
You already seem to understand the concept of the monitor's native resolution. High resolution monitors are best for image processing, when programs like Photoshop are used to edit photographic images. For text-based work, they're the wrong way to go, as you've discovered. Part of the problem is that many web pages and all operating systems seem to be stuck with a one-size-fits-all set of icons, menus, page sizes and the like. With Windows, you get two choices of text size, but those choices don't apply to all text instances and only in the operating system, not in the applications that run on top of the application. So driving a high resolution monitor at its native resolution results in tiny text, icons and the like. I get some email messages that I cannot read because the very popular marketing company that creates them uses what must be 4 point typefaces.
I have dual 20.5" Samgung monitors with 1600x1200 native resolution on two of my workstations. They're beautiful monitors, but I would trade even-up for the same monitor with 1280x960 native resolution. One thing that's nice about LCDs, by the way, is this. If you get ones that pivot clock- or counter-clockwise, and many do, you can easily run them in portrait mode by rotating them and changing the settings for the driver. My FrameMaker workstation has one monitor set to landscape orientation and the other to portrait mode. Try setting a 17" CRT on its sidegood luck!
LCD monitors will ONLY look their best when the image is displayed at their native resolution, or perhaps in some cases, at a submultiple of the native resolution. For example, a 1600x1200 monitor might look OK when the graphics card is set to 800x600. In my case, that makes the icons and windows appear too large, though. Something in-between is best for me. I doubt, however, that you have a 840x525 choice, but if you do, try it.
Sheila asks about your video cable. An LCD monitor *should* be driven by a graphics card with a DVI (digital) output. Otherwise, the signal must be converted to analog (VGA) and back to digital for display purposes. Since the image is inherently digital to begin with, converting to analog video and then back to digital has its obvious drawbacks. I'm not sure if a modern graphics card can properly identify the connected monitor though a VGA cableit's been so long since I used a CRT and a VGA card that I've forgotten.
A CRT monitor also has a "native resolution" based on the pitch of the phosphor triads and the shadow mask in the tube. Because that was an analog interfaced world, and CRTs are relatively "soft" compared to LCDs, the effects of non-native scan rates and resolution settings were not as troublesome or as obvious as they are for LCD screens. Once you get the settings right on your LCD display, though, you will NEVER consider going back to a CRT display.
It's probably too late to lobby for this, but if I were you, I would strive to get a "dual-head" graphics card, one with two DVI outputs, and put two identical monitors side-by-side. Once you've experienced a dual-monitor setup, you will never be happy with just one screen.
Setting the graphics card resolution for a 16:10 aspect ratio in any other than the native resolution of the monitor will result in "aliasing" artifacts, which may be what you mean by "distortion." The simplistic way to describe the aliasing effect is that some elements of a character inevitably fall in the "cracks" between pixels. When the image resolution setting matches the native resolution, the video data from the card "lines up" perfectly with the pixels, giving the most accurate representation. The other type of distortion that you may be referring to is due to a mismatch of the aspect ration associated with an image resolution setting versus the aspect ratio of the screen. In such situations, a "truly" round circle would appear elliptical on the screen. This is what Winifred is describing. You cannot expect acceptable results with any graphics card setting whose resolution aspect ratio is , relative to the display, mismatched. You must use a setting that corresponds to the 16:10 ratio.
Another way to understand the artifacts associated with aliasing is to imagine viewing a checkerboard through a piece of wire fencing with a square pattern laid on top of it. When the size of the squares in the fencing material are the same as the checkboard squares, you can make things line up and see all of the checkerboard. If the screen wire is a different size, then there's no way to place the wire over the checkerboard without covering some of the squares with wirethat is, unless the pattern in the fence is twice the size of the square, ot four times, and so on.

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http://www.bresink.com/osx/HardwareMonitor.html
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Sadly none of the above unit will work w/ Hardware Monitor.
I just received this email from the author after inquiring about the above displays compatibility w/ Hardware Monitor:
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Message was edited by: jmFightSpam

I have my MBP hooked up to a Viewsonic 22 in. LCD directly with the DVI cable that came with the monitor. No problems so far. Perhaps try a different brand of monitor. I have heard good things about both Viewsonic and Samsung.

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Does anyone know how to correct this? I can find older posts but they date back too far. Where they say to go and what do has changed since.
The monitor profile LCD color management and conversion appears to be defective. Please rerun your monitor calibration software.
Everything dispalys in a cream color background and nothing prints correct color. I have PSE6.

todls1:
I'm guessing this message appears when you start the PSE6 Editor?
If so, what you should select is Ignore, and check the box to not show the message again. (Alternatively, you can remove the profile. If you wish to do this, tell me what edition of Windows you have and I can provide instructions.)
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Hi roctopus,
This article will give you some information about using multiple displays with your iMac -
OS X Yosemite: Connect multiple displays to your Mac
Thanks for using Apple Support Communities.
Best,
Brett L

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Sell the G4 imac or give to my parents. Keep the G3 ibook but install the max ram for it (is 512mb the max for this old cpu) and replace the old airport card with a new airport extreme card. Buy an extreme base station. Get a mac mini w/ wireless mouse and keyboard and run it through the philips. Any thoughts?
If i go this route i keep the ibook for portability and the mac mini gives me a more powerful at home cpu. This would keep costs down and not take up as much space. Anyone have their mini hooked up to their lcd tv?

Hi Martin,
I appreciate your thoughts : I have a G3e key Lime Clamshell 466MHz iBook, I put a 256MB SIMM in to take the iBook up to 384mb and it's now OK for Tiger - I used the Apple Video Out cable to a sony CRT TV via SCART and was able to struggle thru Bridget Jones 2 on DVD , but got a headache! Wife was UNHAPPY. suggestion is avoid!!!!!!!!!!!!!!
(maybe sell your iBook at a premium on an online auction website?)
I'm pretty sure that Airport Extreme cards - being a different size and shape from the old ones won't allow you to upgrade that way. I did buy an Airport Extreme enabled Mac Mini 1.25GHz 40GB 1GB RAM for driving my Dell 26" LCD TV/Monitor. It is F A N T A S T I C ! The Dell W2600 came with DVI to DVI cable which plugged straight into the Mini's DVI with no adaptors. The Dell was recognised and a profile was loaded by 10.3
Most important point :-
I adjusted the Mac Mini screen output resolution to EXACTLY the Dell W2600 Native Resolution of 1280 x 768 (WXGA) (720p HDTV).
with a mismatched native resolution the modern TV's like your Philips 37" will start to resample and might make artefacts (mine did!)
The Mini's 32MB video RAM will not drive much higher screen resolutions than 720p anyway!
Well, after some playing , and loading of helper programs like VLC and MTR , then you'll find that Mac Mini to big LCD is the best ever quality that you've seen your DVD's played. When you download the Apple QT7 H.264 HDTV 720p trailers, you'll have seen the best ever TV quality imaginable!!!!
for extended use as a desktop PC, the Mac Mini would be better firing into a 17-19" LCD,
the 26-42" displays are so big that you have to stand 6+ feet away from them at least !!
I used a BT dongle (I had it lying around) and the Apple BT keybd and mouse work well, in fact, I can type from the other end of the garden - just I can't see what I'm typing!
I bought my 3rd & last Mac Mini tonight for Euro 399 (£264!!!) as the blowout of the Rev.A 1.25GHz 40GB 256RAM 32 VRAM models. My main Mini really uses its 1GB ramstick when encoding MPG4 via the EyeTV200, but the sub £300 price makes the Mini phenomenal, unbeatable and so versatile!
I'm sure you'd be happy with the Rev.B with the BTO options until Rev.C comes out!
what's the native resolution of your Philips LCD? is it video protected path?

What's a good LCD display for graphics arts and print production needs?

Hi all,
It's true that the good ol CRT displays in the past were the best. They have the Trinitron tube and had clearity. I'm looking to purchase an LCD monitor that'll come close to a Sony CRT monitor and can handle my graphics art projects. Any thoughts and direction is appreciated.
Thanks
Web dude

CRTs are dead. Please just let them die...
Funny you should say that. I just bought a brand new Philips 22" CRT (for AU$260). I decided to take that path for another few years after looking at the Cinema displays (23" and 30") and noticing severe discolouration at shallow viewing angles (like when you sit closely in front of the monitor to compare three photos side-by-side). Interestingly, the 24" iMac screen doesn't have this problem.
I can't afford or justify the exquisite Eizo LCD screens, so I got the CRT (the best Philips ever made) and couldn't be happier. I've got plenty of space on my corner desk, btw.
Cheers
Steffen.

About monitors and LCD displays

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