Rumors are circulating about a potential Sigma RF 50-120mm f/2.8 DC OS lens targeting APS-C Canon EOS R series cameras. According to reports from Canon Rumors, the lens could be announced in October 2026. This development follows ongoing speculation about third-party support for Canon’s RF mount, particularly for APS-C sensor users seeking versatile telephoto options.

For creators using Canon’s APS-C RF cameras like the EOS R7 or R10, a 50-120mm f/2.8 lens would provide an effective 80-200mm equivalent range, ideal for portraiture, events, and wildlife photography. The inclusion of Optical Stabilization (OS) would further enhance usability in low-light or handheld shooting scenarios.

Sigma has been expanding its RF lens lineup in recent years, offering competitive alternatives to first-party glass. A constant f/2.8 aperture across the zoom range would appeal to videographers and photographers who prioritize consistent exposure and shallow depth of field.

While Canon has not officially confirmed any plans for such a lens, the rumored Sigma offering could fill a notable gap in the RF APS-C ecosystem. Currently, native RF-S lenses in this focal length and speed are limited, making third-party options increasingly important for creators.

The potential launch aligns with Sigma’s strategy of delivering high-performance lenses at accessible price points. If realized, this lens could strengthen the RF mount’s appeal among hybrid creators looking for reliable, professional-grade tools without relying solely on Canon’s first-party offerings.

As of now, no official specifications, pricing, or release date have been confirmed by Sigma. The October 2026 timeline remains unverified, but the rumor has generated interest across photography and videography communities monitoring RF mount developments.

Creator Newsdesk will continue to track official announcements from Sigma and Canon regarding RF lens expansion.