SUMMARY
Canon has filed a patent for a 70-135mm f/2 zoom lens for full-frame cameras, featuring an internal zoom design. This patent appears to be a direct response to Sony's FE 50-150mm f/2 GM lens. The proposed Canon lens would offer a wider aperture than typical 70-200mm f/2.8 lenses, providing advantages for portrait and wedding photographers in terms of depth of field and low-light performance. While patents do not guarantee a product, this filing suggests Canon may be developing an f/2 telephoto zoom to complement its existing f/2 standard zoom.
TAKEAWAYS
Canon patented a 70-135mm f/2 zoom lens for full-frame cameras.
The lens features an internal zoom design and a fixed front group.
This patent is seen as a response to Sony's FE 50-150mm f/2 GM lens.
The f/2 aperture at 135mm offers advantages for portrait and wedding photography.