monitor dpi

[kornermi]

What does 'monitor dot pitch' mean? I thought that 'dot' has simliar meaning as in 'dots per inch'. But maybe I'm wrong. When I installed Linux last weekend, it reported that my monitor's dpi is 70. I know the dot pitch of my monitor is 0.25 mm. That is over 100 dots per inch, of course, if I understand the meaning of 'dot pitch' correctly. Are these 'dots' in monitor and 'dots' in printer the same thing, or not? Thanks.

 

[Gosharkss]

You are confusing "Dot Pitch" and "DPI Dots per inch". For a detailed explanation of "Dot Pitch" see the following web site http://www.csf.org.uk" look under dot pitch explained.

DPI is directly related to the resolution you are running. For example: an average 19" monitor has a viewable area of 14.1 x 10.6". If you are running 1280 x 1024 your horizontal DPI is 1280 / 14.1 = 90.7 Dots per inch, and your vertical DPI is 1024 / 10.6 = 96.6 DPI. Since the viewable area does not change, you can see that as resolution changes the DPI will also change.

I hope this helps.

Jim at http://www.monitorsdirect.com

 

[Noriaki]

dp or Dot Pitch is the (diagonal) distance between two pixels of the same colour.

dpi is Dots Per Inch and is just that: How many pixels there are in an inch.

dp and dpi are not the same thing at all.

 

[BoberFett]

Don't know about Linux, but in Windows monitor DPI is measure in logical inches which doesn't necessarily match physical DPI.

 

[Howard]

dpi is also used to describe printer output. Therefore, it's not pixels, it's dots. That's what the acronym stands for anyway.

Dot pitch is not always the diagonal distance. It depends on whether there's a horizontal/vertical in front of the dot pitch. If there isn't, it usually is horizontal dot pitch, which is shorter than diagonal dot pitch, which is why some monitor manufacturers use horizontal dot pitch and not refer to it as so, to make their monitors look better (no pun intended).