Canon has introduced the RF 75-300mm f/4-5.6 telephoto zoom lens, designed for its EOS R mirrorless camera system, serving as an affordable way to explore long-range photography on both full-frame and APS-C RF-mount cameras.

The lens appears to be a direct adaptation of the Canon EF 75-300mm f/4-5.6 III, originally released in 1999. It shares the same optical formula, consisting of 13 elements arranged in nine groups, along with a seven-blade diaphragm. Autofocus is driven by a DC motor, just like the original EF version. Overall, it weighs 507 grams and measures 146mm in length when retracted.

The RF 75-300mm f/4-5.6 is tailored to be compatible with both full-frame and APS-C EOS R bodies. When mounted on an APS-C camera like the EOS R100, the lens provides an effective focal length of approximately 120-480mm due to the crop factor. It features a 58mm filter thread and supports the ET-60 lens hood, further underscoring its continuity with the earlier EF version. At its 300mm focal length, it delivers a maximum magnification of 0.25x and a minimum focusing distance of 1.5 meters.

Canon emphasizes the 75-300MM usefulness as a second lens in starter kits, particularly for users upgrading from standard zooms like the RF-S 18-45mm f/4.5-6.3. Compared to other entry-level RF telephoto lenses such as the RF-S 55-210mm f/5-7.1 IS STM, the new 75-300mm option provides greater reach and a slightly faster maximum aperture. For full-frame users on a tight budget, it also presents a lower-cost alternative to the RF 100-400mm f/5.6-8 IS USM, which is heavier, longer, and more expensive.

Canon’s decision to revive a decades-old lens design, while unusual in an industry driven by constant innovation, appears to be a strategic move to fill a gap in the RF lens lineup with a familiar, cost-effective option.

Here are some sample pictures taken with the lens, courtesy of Canon: