• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

How to calculate DPI for displays?

for my 17 inch widescreen laptop, 120 DPI looks about right for this res and for the icons (125%), but you get a lot of pixelated images using this DPI setting. I dont know what you quite mean by calculating it though, or how this would be done.
 
This is one thing that's going to be great about Vista. DPI will scale up accordingly with the higher resolutions.
 
By calculating it I mean taking the physical screen size.. eg. 15.4inch, and taking the resolution 1400x1080.. and calculating the DPI that the panel has.
 
For CRTs, take the diagonal viewable length (for a 19" it's generally around 18"). I believe the stated display length for LCDs is the real display length. Then, put that number 'c' into this equation:

(4x)^2 + (3x)^2 = c^2

Then you have 25(x^2) = c^2. Divide both sides by 25 so you get:

x^2 = (c^2)/25

then take the square root to solve for x. Multiply x by 4 to find the horizontal length of the display. Divide the larger number of the resolution (the 1024 in 1024x768) by the horizontal length and that's your DPI.

There's probably an easier way to do this.
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top