Questar T-Rings Only

Questar T-rings are internally threaded on one side to attach to the Praktica-type 42mm x 1mm pitch T-thread used on the Questar camera coupling set. The other side of the T-ring has the appropriate external thread pattern or bayonet mount to connect to your particular camera body. The 42mm x 1mm pitch male threads of the camera coupling set allow the coupling to be connected directly to camera bodies using a Pentax screw thread lens mount, so no Pentax screw thread T-ring is available or needed with the Questar photographic system.

Orientation of the camera horizontally or vertically for the best composition is done by adjusting a swivel mechanism on the camera coupling set itself.