Ultrawide Lens Type III made by Schneider Kreuznach. Can be used on all cameras with lens thread M62 x 0,75 or M67 x 0.75. The lenses must be suitable for macro filming.
Will fit following cameras for example:
7 mm focal length lenses are converted to 4 mm with a diagonal angle of view of 83°. This means about three times more in the picture, which is certainly a great advantage when shooting in a room.
In addition the depth of focus is so greatly increased that in most cases no place as if a fixed focus camera were being used. An additional advantage is that uncontrolled movements of the camera are no longer catastrophic.