New Canon Patent applications filed for a set of RF mount lenses with electronically controlled Defocus Smoothing (DS).
Defocus Smoothing is a technology Canon first introduced with the RF 85mm f/1.2L DS lens. The featured Canon patent might suggest more DS lenses are on their way.
Canon patent application 2020-199390 (Japan) discusses optical formulas and methods for three prime lenses with DS:
- 135mm f/2
- 400mm f/4
- 50mm f/2.5
Continue reading “Canon Patent: 135mm f/2, 400mm f/4 and 50mm f/2.5 defocus smoothing”