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RF400mm F2.8, 500mm F4, 600mm F4 from CANON [Patent]

CANON filed a patent of 400mm F2.8, 500mm F4, 600mm F4 probably for mirrorless cameras.

【公開番号】特開2019-95525(P2019-95525A) click here
【公開日】令和1年6月20日(2019.6.20)
【発明の名称】光学系及びそれを有する撮像装置

Specification and lens arrangement of embodiment 1
Focal length: 392.00 mm
FNo.: 2.90
2ω: 3.16
Image height: 21.64 mm
Lens length: 360.03 mm
Back focus: 31.01 mm
JPA 501095525_i_000004.jpg
Specification and lens arrangement of embodiment 2
Focal length: 490.00 mm
FNo.: 4.12
2ω: 2.54
Image height: 21.64 mm
Lens length: 412.08 mm
Back focus: 33.39 mm
JPA 501095525_i_000006.jpg
Specification and lens arrangement of embodiment 3
Focal length: 588.00 mm
FNo.: 4.12
2ω: 2.11
Image height: 21.64 mm
Lens length: 476.08 mm
Back focus: 33.21 mm
JPA 501095525_i_000008.jpg
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