# Eyesis4Pi Pixels Calculation

From ElphelWiki

## Calculations

Combined number of pixels: **120MPix**

The equirectangular projection size: **14268x7135** which equals to ~100MPix but since it's a projection the real pixels are stretched - their size is close to the real ones when on the virtual sphere. At the same time the equatorial line of the projection consists of real pixels since they are projected as they are due to the projection's properties.

L = 2*pi*R (1) S(sphere) = 4*pi*R^2 (2) (1)=>(2) S(sphere) = L^2/pi = 14268^2/3.14 ~64.8MPix