Canon Reveales RF 7-14mm f/2.8-3.5L Fisheye STM
Canon has introduced the RF 7-14mm f/2.8-3.5L Fisheye STM, an ultra-wide zoom lens for the RF mount that succeeds the EF 8-15mm f/4L USM designed for DSLRs. The new lens expands the focal range at both ends and offers a wider maximum angle of view: at 7mm, it produces a circular fisheye image with a 190-degree field of view on full-frame cameras. As the focal length increases, the rendering transitions to a diagonal fisheye effect, reaching 180 degrees at 14mm. On APS-C bodies, the lens delivers a diagonal fisheye image from approximately 8.7mm onward, with a zoom limiter to prevent vignetting beyond the usable range.
The maximum aperture is f/2.8 at 7mm and gradually narrows to f/3.5 at 14mm, making it faster than the previous EF 8-15mm across much of the range. The optical construction consists of 16 elements arranged in 11 groups, including five ultra-low dispersion elements and two aspherical elements. Canon has also applied Super Spectra and Air Sphere coatings to reduce flare and ghosting, and the front element features a fluorine coating to repel moisture and oil. The lens uses an equidistant projection design intended to maintain consistent subject scaling across the frame, which can be relevant in applications such as virtual reality capture.
Due to the pronounced curvature of the front element, conventional front-mounted filters cannot be used. Instead, the lens incorporates a rear drop-in filter holder compatible with Canon’s existing RF drop-in filter system: optional circular polarizing and variable neutral density filters are already available. A clear filter is also supplied and must remain in place as part of the optical path. for the rear slot.
The lens employs an STM focusing motor, providing autofocus suitable for both still photography and video recording, and its zoom mechanism maintains a constant physical length during operation. It focuses as close as 0.15 meters, offering a maximum magnification of 0.35x at 14mm in the center of the frame. The Japanese company states that focus breathing is limited to 0.4 percent at the wide end and 1.5 percent at the tele end.
Here are some sample pictures, courtesy of Canon:
Physically, the RF 7-14mm f/2.8-3.5L Fisheye STM measures 109.4mm in length with a maximum diameter of 76.5mm and weighs 476 grams. It features weather sealing consistent with Canon’s L-series standards, a control ring, and a customizable function button. The lens is scheduled for release at the end of February 2026 with a suggested retail price of €1,899.
