A brand new optical system patent for a large angle RF mount zoom has appeared. This one reveals the system for a few Canon RF 17-35mm f/4-5.6 designs.

The lenses within the two embodiments aren’t all that a lot smaller than an EF counterpart, and it seems to be like zooming is barely exterior.

Canon RF 17-35mm f/4-5.6

  • Focal size: 17.50mm 27.00mm 33.95mm
  • F-number: 4.00 5.03 5.80
  • Half area angle: 51.03° 38.71° 32.51°
  • Image peak: 21.64mm 21.64mm 21.64mm
  • Lens complete size: 121.00mm 118.39mm 121.18mm
  • BF: 20.00mm 30.99mm 38.92mm

Canon RF 17-35mm f/4-5.6

  • Focal size: 17.50mm 27.00mm 33.95mm
  • F-number: 3.94 4.92 5.69
  • Half angle of view: 51.03° 38.71° 32.51°
  • Image peak: 21.64mm 21.64mm 21.64mm
  • Total lens size: 122.00mm 119.11mm 121.87mm
  • BF: 20.00mm 31.62mm 40.07mm

Once all the quick zooms ship this yr, I believe it’s secure to imagine we’re going to see f/4 variants quickly after.