Canon Patent a new mirrorless lens, RF 17-35mm F4-5.6 Lens. Due to the nature of aperture range we expect the lens will remain affordable, And sooner or later we will be having one more lens with constant aperture.
Canon RF 17-35mm F4-5.6 Lens Patent Details
[Publication No.] JP 2019-74633 (P2019-74633A) Click Here
[publication date] Ryowa 1 year May 16 ( 2019.5.16)
[ Description of the invention] Zoom lens and imaging device having the same
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
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