1. A light-field microscopy system for imaging a specimen in a light-field microscope arrangement, the system comprising: an objective lens; a photosensor array; and a microlens array located at an intermediate image plane between the photosensor array and the objective lens, wherein the photosensor array detects light rays passing from the objective lens and through the microlens array at a resolution that is sufficiently high to record a light field of the specimen for computing a three-dimensional volume image dataset of the specimen.