How do you determine actual resolution?

Status
Not open for further replies.
Assuming square pixels (I believe they are square):

Let x = number of pixels in the horizontal direction
Let y = number of pixels in the vertical direction
Let z = total number of pixels

x/y = aspect ratio (usually 4:3 or 5:4)

x * y = z

If x/y = 4/3, then x = 4y/3

Then, (4y/3) * y = z

(4y^2)/3 = z

Solve for y, and substitute into x = z/y (rearranged form of x * y = z)
 
Unless you are just wanting to play etc, I think you are wasting your time trying to build a LCD projector based around anything smaller than 5" simply because the quality will be so low...even divx movies, will appear blocky and screendoor is so visible its not funny.

So in short, if you looking for a quality projection dont bother, if not, have fun.
 
Status
Not open for further replies.