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Holography uses wave(physical)optical principles of interference and diffraction to record and display images.Interference allows us to record the amplitude and phase of the optical wave emanating from an object on a film or recording medium and diffraction enables us to see this wave-field,i.e.the amplitude and phase of the object.Digital Holography has enabled quantification of phase which in some applications provides meaningful engineering parameters.There is growing interest in reconstructing this wavefield without interference.Thus there is growing interest in the Transport of Intensity Equations(TIE)which uses two or more defocused images to reconstruct the phase.However both these ideally require the use of coherent illumination.The alternate school of thought emerges from the computer scientist group who primarily deal with ray optics.The familiar matrix optics describes a ray by its position and direction.However imaging systems record all rays emanating from an object point and received at the conjugate image point.A light field image is one that has information of both position and direction of rays fanning from any object point.This enables post recording focusing and perspective views of the object from a single image.However light field uses incoherent light This paper will explore how these two approaches can be unified which involves concept of phase for partially coherent imaging and also depth and perspective from phase reconstructions.