Olympus splits their digital camera division to sale

From NHK news, OLYMPUS decides to spin-off their digital camera division for sale.

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Wide angle folded optics for EVF from CANON

CANON filed a patent for wide angle folded optics for EVF of mirrorless cameras.

【公開番号】特開2020-95073(P2020-95073A) click here
【公開日】令和2年6月18日(2020.6.18)
【発明の名称】観察光学系及びそれを有する観察装置

Embodiment 1



Polarizer plates are using to maximize reflection.

Which macro lens do you like in RF85mm, 95mm and 100mm F2.8?

CANON filed a patent of 1:1 macro lenses for 35mm full-frame mirrorless cameras.

【公開番号】特開2020-91334(P2020-91334A) click here
【公開日】令和2年6月11日(2020.6.11)
【発明の名称】光学系およびそれを有する撮像装置

Embodiment 1: RF85mm F2.8 1:1 MACRO
Focal length: 84.92 mm
F number: 2.92
Half angle of view: 14.29
Image height: 21.64 mm
Lens length: 120.23 mm
Back focus: 10.60 mm


Embodiment 2: RF95mm F2.8 1:1 MACRO
Focal length: 94.82 mm
F number: 2.92
Half angle of view: 12.85
Image height: 21.64 mm
Lens length: 124.00 mm
Back focus: 14.11 mm


Embodiment 5: RF100mm F2.8 1:1 MACRO
Focal length: 99.75 mm
F number: 2.92
Half angle of view: 12.24
Image height: 21.64 mm
Lens length: 169.97 mm
Back focus: 14.00 mm

70-200mm F4 DG DN OS from SIGMA

Additonal information! 2020-06-04
This pantent should be for PANASONIC LUMIX S PRO 70-200mm F4 O.I.S.
Thanks for FT-san.

SIGMA filed a patent of 70-200mm F4 zoom lenses for 35mm full-frame mirroless cameras.

【公開番号】特開2020-86133(P2020-86133A) click here
【公開日】令和2年6月4日(2020.6.4)
【発明の名称】変倍結像光学系

Embodiment 3
Zoom ratio: 2.68
Focal length: 72.50 118.13 193.95 mm
F number: 4.00 3.99 4.00
Angle of view: 33.22 20.36 12.38
Image height: 21.63 21.63 21.63 mm
Lens length: 200.60 200.60 200.60 mm