루머스] Canon RF 70-200mm f/2-2.8L IS USM DS + 다른 DS줌

85.2 DS에 이어 줌렌즈도 DS 버전으로 내놓을 생각인가 봅니다.
T값이 얼마나 나올련지 모르겠으나 영상미를 생각한다면 괜찮을것 같더군요.
Over the years I've seen some crazy designs patented by Canon and applications like this one are fun to read. I mean, here's a patent application where someone was told. “Go nuts, see what you can do”. Let's make no mistake the lenses described here would be big, he에이브이y, and frighteningly expensive but we are here for that.
The purpose of these embodiments is to h에이브이e an apodization effect (atypically a Defocus Smoothing Coating – or DS) and also h에이브이e minimal vignetting.
Canon RF 70-200mm F2.0-2.8 DS
Focal length 71.79 99.55 193.18
F number 2.00 2.30 2.85
Half angle of view 16.77 12.26 6.39
Image height 21.64 21.64 21.64
total length 161.48 186.95 219.93
BF 15.67 20.48 31.62
Canon RF 28-70mm F1.6-2.0 DS
Focal length 28.91 50.03 68.11
F number 1.60 2.06 2.06
Half angle of view 36.81 23.39 17.62
Image height 21.64 21.64 21.64
Lens total length 157.90 171.01 179.46
BF 19.11 28.33 33.77
Canon RF 35-70mm F1.8-2.0 DS
Focal length 35.02 50.03 68.11
F number 1.80 2.06 2.06
Half angle of view 31.71 23.39 17.62
Image height 21.64 21.64 21.64
Lens length 162.01 171.01 179.46
BF 22.26 28.33 33.77
As with all patent applications these may never actually turn into actual products or even real patents. However, it's a look into what Canon is researching for future products.
Source: Japan Patent Application 2023-170260