Direct Video Imaging Camera Dedicated Borescopes are borescopes that focus their optical images directly onto video cameras without use of auxiliary eyepieces, adapters, or magnifiers.
Magnification is inversely proportional to image brightness.
Existing image distortions in borescopes were also magnified. Magnification is directly proportional to aberrations Magnification was accomplished by attaching a video adapter containing magnification lenses onto the eyepiece of borescopes. Typical Borescope With Video Magnification Adapter Beyond all of the optical and mechanical problems associated with coupling borescopes to video cameras was the major physical problem of the size and weight of video cameras. Cameras overwhelmed small diameter borescopes and made handling very difficult. Overall the initial attempt to adapt by using video adapters was a quick fix solution resulting in compromised performance.