This post may contain affiliate links(s). An affiliate link means I may earn advertising/referral fees if you make a purchase through my link,
without any additional cost to you. It helps to keep this site afloat. Thank you in advance for your support. If you like what we do here, maybe buy me a
coffee.
Canon Patent Application: High Zoom Ratio lenses for EF and RF
This patent application contains embodiments for high zoom ratio lenses. Most of them are for EF mount, with large registration distances that are associated with the EF mount. However, there is two RF mount lens embodiments that slips in with 22.42 and 21.75mm back focus.
Focal distance 35.04 152.85 350.37
F number 3.50 4.97 5.60
Field angle 30.36 8.05 3.53
Image height 20.53 21.61 21.61
length of the lens 321.17 321.17 321.17
BF 40.10 40.10 40.10
Focal distance 35.04 152.85 350.37
F number 3.50 4.97 5.60
Field angle 30.36 8.05 3.53
Image height 20.53 21.61 21.61
length of the lens 321.17 321.17 321.17
BF 40.10 40.10 40.10
Focal distance 35.13 160.38 386.45
F number 4.50 5.27 5.60
Field angle 30.30 7.67 3.20
Image height 20.53 21.61 21.61
length of the lens 362.82 362.82 362.82
BF 54.68 54.68 54.68
Focal distance 29.22 203.97 350.06
F number 2.80 4.36 4.50
Field angle 32.15 6.05 3.53
Image height 18.36 21.61 21.61
length of the lens 406.68 406.68 406.68
BF 22.42 22.42 22.42
Focal distance 25.20 125.05 294.41
F number 3.50 4.97 5.60
Field angle 36.72 9.80 4.20
Image height 18.80 21.61 21.61
length of the lens 374.08 374.08 374.08
BF 21.75 21.75 21.75
Japan Patent Application 2018-180203
blog comments powered by