17-34mm F4-5.6 for EOS R system

CANON filed a patent of optical systems containing a 17-34mm F4-5.6 zoom lens for mirroless cameras.

【公開番号】特開2019-74633(P2019-74633A) click here
【公開日】令和1年5月16日(2019.5.16)
【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 2
Zoom ratio: 1.94
Focal length: 17.50 - 27.00 - 33.95 mm
F number: 3.94 - 3.92 - 5.69
Angle of view: 51.03 - 38.71 - 32.51
Image height: 21.64 mm
Lens length: 122.00 - 119.11 - 121.87 mm
Back focus: 20.00 - 31.62 - 40.07 mm