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It is possible to record a light field using a [[light field camera]], such as a camera from [[Lytro]].
It is possible to record a light field using a [[light field camera]], such as a camera from [[Lytro]].
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−A light field can be represented using a [[plenoptic function]], which is a 5 dimensional function.
+A light field can be represented using a [[plenoptic function]], which is a 5 dimensional function. A partial light field can be represented in 4 dimensions using the [[two-plane method]].<ref name="k782">{{cite conference | last=Gortler | first=Steven J. | last2=Grzeszczuk | first2=Radek | last3=Szeliski | first3=Richard | last4=Cohen | first4=Michael F. | title=The lumigraph | publisher=ACM | date=1996 | isbn=978-0-89791-746-9 | doi=10.1145/237170.237200 | page=43–54}}</ref> That can result in a 4-dimensional function. However, it may be limited in focal depth.
−A light field can be represented in 4 dimensions using the [[two-plane method]].<ref name="k782">{{cite conference | last=Gortler | first=Steven J. | last2=Grzeszczuk | first2=Radek | last3=Szeliski | first3=Richard | last4=Cohen | first4=Michael F. | title=The lumigraph | publisher=ACM | date=1996 | isbn=978-0-89791-746-9 | doi=10.1145/237170.237200 | page=43–54}}</ref>
Light fields are useful for 3D because the largest or second largest factor that determines focus is the angle of rays coming into a human eye.
Light fields are useful for 3D because the largest or second largest factor that determines focus is the angle of rays coming into a human eye.