Pixel density: Difference between revisions
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==Pixel density in Virtual Reality== | ==Pixel density in Virtual Reality== | ||
[[Virtual Reality#Devices|Virtual reality head-mounted displays]] require high pixel density because the screen is very close to the user's eyes. Higher PPI leads to sharper images with more details. An [[HMD]] with low pixel density can cause blurring of words and objects and the "screen door effect". | [[Virtual Reality#Devices|Virtual reality head-mounted displays]] require high pixel density because the screen is very close to the user's eyes. Higher PPI leads to sharper images with more details. An [[HMD]] with low pixel density can cause blurring of words and objects, presence of pixelation and the "screen door effect". PPI is just as important if not more important than resolution as a parameter to judge HMDs. | ||
As pixel density increases, lower [[persistence]] is needed to avoid blurring. | As pixel density increases, lower [[persistence]] is needed to avoid blurring. | ||