Right Angle (RA) and Non-Inverting Right Angle (NIRA) Adapter Tubes
An adapter tube is a required component for the complete 12X Zoom system. When combined with the C-mount coupler, the adapter tube places the camera sensor at the optical image plane of the zoom system. Right  Angle (RA) adapters introduce a 90° bend in the optical axis, shortening the overall length of the system. The resulting image will be mirrored,thus erect and read backwards from right to left when viewed with a camera. Right Angle adapters are available in magnification ranges from 0.71X to 5.0X.

A Non-Inverting Right Angle (NIRA) adapter introduces a 90° bend in the optical axis, however the use of a penta prism results in an image that is erect and reads left to right. NIRA adapters must be fitted to the 12X Zoom body tubes in order to maintain path length. NIRA adapters are available in magnification ranges from 0.67X to 5.0X.