What is DPI?

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So, You have a mouse right?. do you care about, What's inside the mouse things? Then continue to start reading this page. If you don't care. Just ignore this useful information.

Ok. Let me explain this. So. in what's your mouse now? based on the Test, only 85% people in the world know their mouse's DPI. And the other, Doesn't. If you don't know it. you can google it or find the box if you still have it. i'm sure there is the Information about the mouse including DPI. What's DPI Means? Dots per inch (DPI) is a measurement of how sensitive a mouse is. The higher a mouse's DPI, the farther the cursor on your screen will move when you move the mouse. A mousewith a higher DPI setting detects and reacts to smaller movements.

Not just that. There is also a formula for this DPI Things.

Formula

[(Low DPI) x (Sensitivity for low DPI)] / High DPI

ex: 400 x 2 = 800(400 physical DPI 2 sensitivity) / 3200 = 0.25

So a 3200 DPI mouse to equate the same movement as a 400 DPI mouse with 2 sensitivity or a 1 sensitivity with 800 DPI needs to set the sensitivity to 0.25. And let's say the low DPI is around 30cm/360, then the 0.25 with 3200 will equal the same distance.

6/11 = 1:1 movement, 1 pixel = 1 pixel. Any more or less and you completely change the calculations based on the windows cursor multipliers.

Also just because it's 1:1 doesn't mean it won't interpolate. You either move a number of inches to match the movement. Or you set your sensitivity high enough that it skips or ignores pixels to achieve the end result.

ex: Say you got a 1000x1000 resolution. And you got a 500DPI mouse either it takes you two inches to cross the entire screen reading completely 1:1 movements or set your sensitivity to 2. To multiple the amount of movements 500*2 = 1000.DPI/CPI = Dots per inch/Counts per inch. 

Source: Arc'xer , Sam and Andy.

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