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The CSS 2.1 spec recommends 96dpi as the reference pixel resolution for rendering dimensions, but what are the real resolutions of displays these days? Obviously, the days of 72dpi are gone, and have been for years now. I did some looking this morning, and here are the results of my anecdotal sample (of the displays on my desk).
| Display | Diagonal size | Pixel dimensions | Physical resolution |
|---|---|---|---|
| Dell Ultrasharp 1901FP | 19 in. | 1024 x 1280 | 86.8 dpi |
| Apple iMac (2.16GHz Core 2 Duo) |
24 in. | 1920 x 1200 | 94.6 dpi |
| Motion 1600LE View Anywhere® | 12.1 in. | 1024 x 768 | 106.4 dpi |
| Apple MacBook (1.83GHz Core Duo) |
13.3 in. | 1280 x 800 | 114 dpi |
So that gives us about a 100dpi average with a standard deviation of about 12. Fin.
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