Canon Flex Zoom Cinema Lens CN-E45-135mm T2.4 L F/FP Review

Canon has made a significant statement with its first full-frame cinema zooms, and the CN-E45-135mm T2.4 is a compelling telephoto option within this new series. Paired with its wider 20-50mm sibling, it offers filmmakers a high-quality, two-lens solution that covers the vast majority of commonly used focal lengths. The constant, fast T2.4 aperture is the headline feature, providing excellent exposure consistency and low-light performance across the entire zoom range, a critical requirement for professional narrative and documentary work.

The most disruptive aspect of the Flex Zoom series is its market position. These lenses bring true cinema-grade, full-frame zoom capabilities to a price point that is substantially more accessible than many established competitors. This opens the door for a wider range of productions, from independent features to high-end corporate projects, to achieve a premium look without needing to rent or purchase optics that cost several times as much. It represents a smart democratization of professional-level tools for a growing segment of owner-operators and smaller production houses.