An optical imaging system for imaging a target during a medical procedure is disclosed. The optical imaging system includes: a first camera for capturing a first image of the target; a second wide-field camera for capturing a second image of the target; at least one path folding mirror disposed in an optical path between the target and a lens of the second camera; and a processing unit for receiving the first image and the second image, the processor being configured to: apply an image transform to one of the first image and the second wide-field image; and combine the transformed image with the other one of the images to produce a stereoscopic image of the target.