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From: Chris on 16 Jan 2008 02:06
I currently have a 19" at 1280x1024 and wanted to find out if the text
would appear smaller since the resolution is higher or if the
increased size would make up the difference? The 22" is 1680x1050.

Thanks,
Chris
From: GT on 16 Jan 2008 05:40
"Chris" <chris95008(a)yahoo.com> wrote in message
news:d4b4f17d-4ac8-4ce2-b5a6-d2ceb6f09c19(a)t1g2000pra.googlegroups.com...
>I currently have a 19" at 1280x1024 and wanted to find out if the text
> would appear smaller since the resolution is higher or if the
> increased size would make up the difference? The 22" is 1680x1050.

You are talking about moving from a standard format 19" to a widescreen 22".
The vertical pixel height is the value to examine. On the 19" screen
(asuming 4:3 aspect ratio), the physically height of the display is 16.45"
and fits 1024 pixels into that size, so each inch has 62.23 pixels. The 22"
screen (asuming 16:9 aspect ratio) the physically height of the display is
16.5" and fits 1050 pixels into that size, so each inch has 63.64 pixels.
With my assumed aspect ratios, there will be a tiny difference in text
height on those 2 displays, but to the human eye it will not be noticable.

If you know the aspect ratio of the screens (ratio of screen width to
height), then we can calculate this more accurately. If you know the
physical height of the display, then you can skip to the last step here:

aspect ratio = screen width / screen height.

This should give an aspect ratio greater than 1.

physical display height = square root of ( (diagonal * diagonal) / aspect
ratio )

number of pixels per inch = vertical screen resolution / physical display
height


From: kony on 16 Jan 2008 05:44
On Tue, 15 Jan 2008 23:06:42 -0800 (PST), Chris
<chris95008(a)yahoo.com> wrote:

>I currently have a 19" at 1280x1024 and wanted to find out if the text
>would appear smaller since the resolution is higher or if the
>increased size would make up the difference? The 22" is 1680x1050.
>
>Thanks,
>Chris

Text size is determined by the pixel or dot pitch which is
lower on 22" but not much, so text appears slightly smaller
on 22" widescreen. The difference is less than with some
other monitor size changes, it shouldn't be hard to get used
to the difference unless you have particular vision problems
(and you could always move the monitor a couple inches
closer to you).

From: GT on 16 Jan 2008 06:19
"GT" <ContactGT_remove_(a)hotmail.com> wrote in message
news:478ddef3$0$1235$c3e8da3(a)news.astraweb.com...
> "Chris" <chris95008(a)yahoo.com> wrote in message
> news:d4b4f17d-4ac8-4ce2-b5a6-d2ceb6f09c19(a)t1g2000pra.googlegroups.com...
>>I currently have a 19" at 1280x1024 and wanted to find out if the text
>> would appear smaller since the resolution is higher or if the
>> increased size would make up the difference? The 22" is 1680x1050.
>
> You are talking about moving from a standard format 19" to a widescreen
> 22". The vertical pixel height is the value to examine. On the 19" screen
> (asuming 4:3 aspect ratio), the physically height of the display is 16.45"
> and fits 1024 pixels into that size, so each inch has 62.23 pixels. The
> 22" screen (asuming 16:9 aspect ratio) the physically height of the
> display is 16.5" and fits 1050 pixels into that size, so each inch has
> 63.64 pixels. With my assumed aspect ratios, there will be a tiny
> difference in text height on those 2 displays, but to the human eye it
> will not be noticable.

I used the wrong figures here - I got the height of the screens wrong (used
width by mistake)! The correct screen sizes are:
19" screen - 12.4" high (aspect 4:3)
22" screen - 13.2" high (aspect 16:9)

This means pixels per inch:
19" screen - 82 pixels per inch (1024 verticle pixels)
22" screen - 77.5 pixels per inch (1050 verticle pixels)

This then means that text height per inch:
19" screen - font size 10 - 8.2 lines of text per inch
22" screen - font size 10 - 7.7 lines of text per inch - larger text, but
not a big difference

However, you didn't say what type of screens we are talking about, because
the above is based on a 19" LCD. If you are comparing with a 19" CRT, then
the vertical height is more likely to be around 10.7", which means 95 pixels
per inch and 9.5 lines of text per inch, so a 22" LCD replacing a 19" CRT
(using the stated resolutions) would result in larger text.


From: kony on 16 Jan 2008 08:49
On Wed, 16 Jan 2008 11:19:33 -0000, "GT"
<ContactGT_remove_(a)hotmail.com> wrote:


>
>I used the wrong figures here - I got the height of the screens wrong (used
>width by mistake)! The correct screen sizes are:
>19" screen - 12.4" high (aspect 4:3)
>22" screen - 13.2" high (aspect 16:9)
>
>This means pixels per inch:
>19" screen - 82 pixels per inch (1024 verticle pixels)
>22" screen - 77.5 pixels per inch (1050 verticle pixels)
>
>This then means that text height per inch:
>19" screen - font size 10 - 8.2 lines of text per inch
>22" screen - font size 10 - 7.7 lines of text per inch - larger text, but
>not a big difference
>
>However, you didn't say what type of screens we are talking about, because
>the above is based on a 19" LCD. If you are comparing with a 19" CRT, then
>the vertical height is more likely to be around 10.7", which means 95 pixels
>per inch and 9.5 lines of text per inch, so a 22" LCD replacing a 19" CRT
>(using the stated resolutions) would result in larger text.
>

Your calculations are off, a typical 22" widescreen is not
actually 16:9 (1.77:1) ratio, it is 1680 / 1050 = 1.6 ratio
or 8:5

Also, just because a 22" monitor is advertised as 22", that
doesn't necessarily mean it actually is. Sometimes it's
really >= 21.5" rounded up to 22". Come to think of it, I
think this is true with most 22" monitors when they have the
same pixel pitch.

Manufacturers do spec dot pitch as smaller for a 22" than a
19" meaning slightly smaller text.

The pixel pitch of a 5:4 19" is typically 0.294mm
On a 22" it's typically 0.282mm

Taking 0.282 cm pitch * 1050 pixels vertical / 2.54 cm per
inch we end up with a 22" vertical size of 11.7". This must
not be entirely accurate either as I just measured my
1680x1050 22" (actual size 21.6") and it is spec'd by
manufacturer (and actually measures with a ruler) 11.4"
vertical viewable area size.

That makes the 19" monitors' text about 9% larger.

There are some other size options closer to 19" pixel pitch
but some of these are odd resolutions, and others are much
more expensive than a typical TN paneled 22".

For example these with 4:3 ratio but at an odd 1400 x 1050
resolution, IMO the resolution and screen size increase is
small enough it's hardly worth upgrading from a 19" 5:4.
http://www.newegg.com/Product/Product.aspx?Item=N82E16824016064
http://www.newegg.com/Product/Product.aspx?Item=N82E16824236026

A 28" with 1920x1200 would have even larger text but the
price jump is significant, and pixels that large tend to
look blocky unless the monitor is scooted further away to
the point where it might as well have been a smaller monitor
sitting closer to the user for the purposes of text size
(though of course it still has higher resolution so more
on-screen).
http://www.newegg.com/Product/Product.aspx?Item=N82E16824254026

The roughly 26" size group would also be a reasonable
alternative except the prices are still quite high relative
to the screen size.

IMO, if someone is looking for a budget priced LCD then 22"
is the best value at present. If the only goal were very
large text because of a sight impairment then it might also
be worth looking at LCD TVs.
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