Fig. 1. Schematic diagram of microlens image distortion.（a）Microlens image in the center of picture sensor；（b）~（d）Microlens images in the upper left，lower right and lower left.

Fig. 2. Light field imaging model with additional aperture

Fig. 3. Aperture has no constraint on light

Fig. 4. Aperture has part of constraints on light

Fig. 5. Both the aperture and the main lens have constraints on light

Fig. 6. Microlens image deviation.（a）Upper right of the 2D light field image；（b）Lower left of the 2D light field image.

Fig. 7. Quantitative analysis of microlens image deviation