Focal scanning light field imaging uses a camera to capture images at different focal planes to form an image stack, from which full-pixel-resolution light field information can be computationally recovered. However, the depth mapping between the camera’s image and object space is nonlinear, which leads to a discrepancy between image-space capture and object-space reconstruction. In this chapter, a consistent light field measurement method is proposed. This allows the image stack in image space to be transformed into object space, with imaging distortions corrected to ensure space consistency for light field reconstruction. Subsequently, the transmission distance prior in object space can be obtained to reconstruct the object-space light field from the corrected image stack. After camera calibration, the reconstructed light field becomes measurable, allowing the three-dimensional measurement with camera parameters. Experimental results demonstrate that the proposed method can achieve high-precision light field measurement.