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26" vs 32" monitor

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#1 of 181 Posted Oct-12 7:52 PM

From Ronald McDonald Posts 553 Last Nov-23
To All [Msg # 164694.1 ]

Hi,

Since the monitor screens are measured diagonally, is there a way to find out the height and width of what the screen would be? Is there a magical formula?

Thanks!

Ronald

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#2 of 181 Posted Oct-12 9:09 PM

From Dan in Saint Louis Posts 1204 Last 9:21 AM
To Ronald McDonald [Msg # 164694.2 164694.1 ]

One more bit of information is needed: the aspect ratio. Once you have that, finding the height and width is simple application of the Pythagorean Theorem.

---- Dan in Saint Louis

Attachments
	Name: MonitorResolution.xls	Size: 29 K

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#3 of 181 Posted Oct-12 9:15 PM

From Ronald McDonald Posts 553 Last Nov-23
To Dan in Saint Louis [Msg # 164694.3 164694.2 ]

Hi Dan,

Wide-screen 16:9 ratio.

Ron

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#4 of 181 Posted Oct-12 9:44 PM

From Ronald McDonald Posts 553 Last Nov-23
To Dan in Saint Louis [Msg # 164694.4 164694.2 ]

Also, the 26" has a resolution of 768 x 1366 whereas the 32" as a resolution of 1080 x 1920.

I'm trying to find out which one will produce the biggest characters on the screen provided both of them as set to their maximum native resolution.

Ron

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#5 of 181 Posted Oct-12 10:21 PM

From John (staff) Posts 833 Last Nov-24
To Ronald McDonald [Msg # 164694.5 164694.4 ]

Using the data you posted, I'd expect the 26" monitor to be about 12 1/2" high and 22 1/2" wide, and the 32" monitor to be about 15 1/2" high and 27 3/4" wide. The vertical "dot pitch" calculates to be about 0.0144" for the smaller monitor and about 0.0165" for the larger one, so I'd expect the larger monitor to have larger characters. But neither of those numbers comes out close to numbers I'm used to seeing in mm for dot pitch, so I wouldn't take this as gospel.

The best way to figure out the size of characters is to look for the "dot pitch" of the screen.
When you do find "dot pitch", larger numbers give you larger characters, but images may not appear as "sharp" as screens with smaller dot pitch.
If you can actually see a monitor of the same approximate specs, you should be able to get an idea of the character size.

John - Santa Clara, CA

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#6 of 181 Posted Oct-13 2:11 AM

From Ronald McDonald Posts 553 Last Nov-23
To John (staff) [Msg # 164694.6 164694.5 ]

Well John,

Those monitors are from Toshiba and they are primarily TV sets. Not easy to find info. Not easy to buy them either.

I'm likely going to purchase the 26' one and return it for exchange once the 32" becomes available, hopefully before the 30-day return policy expires.

The reason I want to go with Toshiba is simply because their monitors allow the user to dim down the back-light. I couldn't find any other brands that does that.

Currently on my ViewSonic monitor, I have brought down the contrast and brightness to 0 and yet I find the monitor to be too bright and damaging to my eyes.

Regards,

Ron

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#7 of 181 Posted Oct-13 5:24 AM

From Roy Longbottom Posts 175 Last 5:39 AM
To Ronald McDonald [Msg # 164694.7 164694.6 ]

> The reason I want to go with Toshiba is simply because their monitors allow the user to dim down the back-light. I couldn't find any other brands that does that.<

This can be done on my Sharp 32" WS TV.

Roy

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#8 of 181 Posted Oct-13 9:57 AM

From John in Detroit Posts 3243 Last Nov-24
To Ronald McDonald [Msg # 164694.8 164694.1 ]

There are two formulas

Standard television the format is 4x3, So a 25 inch screen (3-4-5) will be 15 by 20 inches, Now that is far too simple for the industry

So the new HD format is 16x9

Now, I'm not going to do the math there but the H^2+W^2=D^2

and H and W are in the ratio of 9 by 16

If you need me to work out the formula I can.. Tomorrow

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#9 of 181 Posted Oct-13 9:57 AM

From Ronald McDonald Posts 553 Last Nov-23
To Roy Longbottom [Msg # 164694.9 164694.7 ]

Oh great!

I have found three models, two 1080p (one of them called Aquos w/ LED's) and one at 720p. Which model do you have?

Regards,

Ron

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#10 of 181 Posted Oct-13 10:07 AM

From Dan in Saint Louis Posts 1204 Last 9:21 AM
To Ronald McDonald [Msg # 164694.10 164694.4 ]

Also, the 26" has a resolution of 768 x 1366 whereas the 32" as a resolution of 1080 x 1920.

Just plug those values into the first three columns of the spreadsheet I attached to message #2. You will then be shown the actual horizontal and vertical dimensions, as well as the PPI (Pixels Per Inch).

You will find that the 26" is 22.7" wide, 12.7" high, and displays 60.3ppi.
The 32" is 27.9" wide, 15.7" high, and displays 68.8ppi.

Both of the pixel densities are considerably lower than seen in present-day monitors, so you would need to sit farther back from the display to avoid watching pixels instead of content.

---- Dan in Saint Louis

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#11 of 181 Posted Oct-13 10:18 AM

From Ronald McDonald Posts 553 Last Nov-23
To Dan in Saint Louis [Msg # 164694.11 164694.10 ]

Thanks Dan!

I will be using that monitor on my desk, leaning by the wall.

My eyes are normally at about 1m (3') from the monitor.

I suppose the 26" one would be best for me?

Regards,

Ron

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#12 of 181 Posted Oct-13 12:41 PM

From Roy Longbottom Posts 175 Last 5:39 AM
To Ronald McDonald [Msg # 164694.12 164694.9 ]

Aquos LC-32WD1 1366 x 768 Pixels - PC at 1360 x 768. Also it has Optical Picture Control option that automatically adjusts brightness depending on room light.

Roy

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#13 of 181 Posted Oct-13 2:28 PM

From Ronald McDonald Posts 553 Last Nov-23
To Roy Longbottom [Msg # 164694.13 164694.12 ]

Thanks Roy,

If I go with a 32", I would want at least a 1080 x 1920 resolution. Otherwise, aren't the characters showing as rough when looking at the screen within a meter in distance?

Regards,

Ron

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#14 of 181 Posted Oct-13 4:04 PM

From Dan in Saint Louis Posts 1204 Last 9:21 AM
To Ronald McDonald [Msg # 164694.14 164694.11 ]

I suppose the 26" one would be best for me?

You can check for yourself.

The 26" monitor is about 60ppi, and conventional monitors run about 100ppi, a ratio of 3:5.

You could then say that the pixels of the 26" monitor at 25" away would look the same as those of a conventional monitor at 15" away (ratio 5:3).

---- Dan in Saint Louis

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#15 of 181 Posted Oct-13 4:20 PM

From Ronald McDonald Posts 553 Last Nov-23
To Dan in Saint Louis [Msg # 164694.15 164694.14 ]

I guess I had it the other way around. In that case, a 1078p 32" monitor would be best.

Yes, your distance ratio makes sense. Right now with my 19" monitor at 1024 x 1280, the fine prints are impossible to read at a meter distance.

Regards,

Ronald

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#16 of 181 Posted Oct-13 5:11 PM

From Roy Longbottom Posts 175 Last 5:39 AM
To Ronald McDonald [Msg # 164694.16 164694.13 ]

You should decide how many pixels per inch you would like, based on existing displays. I use my WS TV for watching videos saved on the PC or using the PC from a remote armchair with a wireless keyboard and mouse. For this I need larger characters. Close up (like from 0.6 metres) , I prefer 85 to 90 pixels per inch.

Roy

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#17 of 181 Posted Oct-13 5:40 PM

From Ronald McDonald Posts 553 Last Nov-23
To Roy Longbottom [Msg # 164694.17 164694.16 ]

Well Roy, I wouldn't know what PPI I currently have. I have a 19" non-WS monitor, currently set at 768 x 1024.

Well, sometimes I do work at near 65 cm from the screen (when I'm doing a lot of typing, for example).

Based on my non-scientific calculation, my 19" monitor is equivalent to a 23" WS monitor. That's why I figured a 26" would be the least for me to get.

I wish I could go into a store and try them out, but they only have TV signal hooked up, no PC's around.

Regards,

Ron

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#18 of 181 Posted Oct-14 5:47 AM

From Roy Longbottom Posts 175 Last 5:39 AM
To Ronald McDonald [Msg # 164694.18 164694.17 ]

Ron

My non-WS 19 inch LCD monitor is 14.8 inches wide. At 1024 pixels that would be 69 PPI.

> I wish I could go into a store and try them out, but they only have TV signal hooked up, no PC's around <

I have a HDMI to DVI cable ready to plug into my laptop, if needed. I would take the laptop (and cable) to the TV store if I had special eyesight requirements.

Roy

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#19 of 181 Posted Oct-14 7:25 AM

From Ronald McDonald Posts 553 Last Nov-23
To Roy Longbottom [Msg # 164694.19 164694.18 ]

Thanks Roy. I'll try to borrow a laptop then. It's a good idea.

I presume the LED back-light produces less electromagnetic field. A 32-inch monitor at such a close range may be dangerous, who knows!

Ronald

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#20 of 181 Posted Oct-14 12:32 PM

From Roy Longbottom Posts 175 Last 5:39 AM
To Ronald McDonald [Msg # 164694.20 164694.19 ]

Ron

I just remembered, my desktop is connected to the TV via VGA as this produced the clearest text. There are a number of quality adjustments for HDMI but I could not quite avoid blurring - another reason to see before you buy. For better picture image quality, I think that the blurring was due to anti-aliasing, extra coloured dots to reduce zig-zag effect on diagonal lines.

Roy