1. An indicia reading terminal, comprising: a plenoptic imaging subsystem comprising an image sensor array and plenoptic imaging optics operable to project a first plenoptic image of a space containing a decodable indicia onto the image sensor array; an illumination source for projecting illumination onto the decodable indicia; wherein the indicia reading terminal is operable to: obtain first plenoptic image data from the image sensor array; adjust at least one operating parameter of the indicia reading terminal based on the first plenoptic image data; project a second plenoptic image of the space containing the decodable indicia onto the image sensor array; obtain a first rendered image based on at least a portion of the second plenoptic image data; and attempt to decode the decodable indicia represented in the first rendered image; wherein the at least one operating parameter comprises: an exposure period of the image sensor array; operation of the illumination subsystem for projecting illumination onto the decodable indicia; an exposure period of the image sensor array and operation of the illumination subsystem for projecting illumination onto the decodable indicia; a gain of the plenoptic image signals read out of the image sensor array; and/or a frame rate at which the indicia reading terminal captures frames of image data.