This trinocular adapter ring converts a stereo microscope eyepiece port into a standard Cmount camera interface while preserving focus between the eyepieces and the camera. It is a compact, durable accessory designed for reliable camera attachment and stable imaging in laboratory, inspection, and teaching setups. Key features and benefits Camera mounting: 25 mm C mount interface compatible with international standard Cmount cameras and sensors. Simul focal design: C CS ring with simul focal function keeps the camera image in focus with the microscope eyepieces when zooming or refocusing. Multiple zoom options: Available magnification settings include 1X, 0.5X, and 0.3X to match different working distances and sensor sizes. Physical dimensions: Thread diameter M28 x 75 mm for secure connection to the microscope trinocular port. Broad camera compatibility: Designed for 1/2 CTV and 1/3 CTV sensor formats and compatible with CCD and CMOS cameras used in HDMI, USB, VGA, and other video microscope systems. Durable construction: Made from quality materials for stable mechanical performance and long service life. Why you need this adapter Simplifies camera integration: Converts the microscope trinocular port to a standard Cmount so you can attach common video cameras without custom machining. Maintains focus during imaging: The simul focal ring reduces the need for constant refocusing when switching between the eyepieces and the camera. Adapts to different camera sensors: Multiple reduction options let you choose the right image size and field of view for your sensor and application. Stable, repeatable connection: Threaded M28 x 75 mounting provides a secure fit that reduces image shift and wobble during work. Compatibility and technical details Camera interface: 25 mm C mount (Cmount) Sensor formats supported: 1/2 CTV, 1/3 CTV Sensor types supported: CCD and CMOS cameras Output connections supported: HDMI, USB, VGA video microscope cameras Magnification/zoom power options: 1X, 0.5X, 0.3X Physical diameter and thread: M28 x 75 mm Product designation: C CS Ring Simul Focal Trinocular Adapter Ring for Stereo Microscope Color options: 13 and 0.5x Typical applications Electronics inspection and : Attach a USB or HDMI microscope camera for live video of circuit boards, solder joints, and component alignment while keeping the stereo view for hand operations. Quality control and manufacturing: Document parts or defects with a camera feed while retaining precise focus and ergonomics through the eyepieces. Teaching and demonstrations: Share a camera feed on a monitor or projector while preserving the instructor and student ability to use the microscope eyepieces without refocusing. Installation and use Screw the M28 x 75 thread end into the microscope trinocular port. Mount the camera to the 25 mm Cmount interface and, if required, use the included CS adapter or reduction lens. Select the appropriate magnification reduction (1X, 0.5X, 0.3X) to match your camera sensor and desired field of view. Adjust the simul focal ring to synchronize eyepiece and camera focus for parfocal imaging. This adapter provides a practical, durable solution for integrating standard video cameras with stereo trinocular microscopes while maintaining focus alignment and flexible image scaling.