Irix Cine Lens 45mm T1.5 Canon EF Mount

The 45mm focal length offers a natural field of view that closely resembles human vision, providing an immersive and relatable perspective for viewers without distortion.

T1.5 refers to the actual transmission of light through the lens, providing a more accurate measure of exposure for video production compared to f-stops. It indicates a wide maximum aperture for low-light shooting.

While designed for video, the lens can be used for still photography. Its 45mm focal length and image quality are excellent, but it lacks features typically found on still photography lenses like image stabilization.

The lens provides full-frame coverage (43.3mm) and is compatible with Super 35 sensors and other smaller cinema camera sensors.

The internal focusing system means the lens does not change physical size during focusing. This is crucial for maintaining stability on gimbals and ensuring that matte boxes and filters remain precisely positioned.

'Low Focus Breathing' ensures that the field of view remains relatively constant during focus pulls, preventing distracting shifts in framing and resulting in smoother, more professional-looking focus transitions.

This specific version is designed for the Canon EF mount. Irix may offer other versions with different mounts for other camera systems.

Ensure the lens is securely mounted to the camera. Check that autofocus or manual focus is engaged correctly on the camera body. Clean the lens contacts if applicable.

Confirm the lens is set to the correct aperture (T-stop) and focus. Ensure the protective caps have been removed from both front and rear elements. Check for any obstructions on the lens elements.

While designed for low breathing, some minimal effect may occur at extreme focus pulls. Practice smooth focus adjustments. Ensure internal focusing is functioning correctly.

Ensure the environment has sufficient UV light or a UV light source to activate the markings. The markings are primarily for low-light assistance and may not be visible in bright daylight.