25-300mm F3.5-5.6 for RF mount from CANON

CANON filed a patent of a high-magnification zoom lens for RF mount.

【公開番号】特開2018-180203(P2018-180203A) click here
【公開日】平成30年11月15日(2018.11.15)
【発明の名称】ズームレンズ及びそれを有する撮像装置

Specification and lens arrangement of embodiment 3
Zoom ratio: 11.68
Focal length: 25.20 - 294.41 mm
F number: 3.50 - 5.60
Angle of view: 36.72 - 4.20
Image height: 18.80 - 21.61 mm
Lens length: 374.08 mm
Back focus: 21.75 mm