More optical formulas for large aperture RF mount prime lenses have appeared. This new patent showcases some RF mount prime lenses that utilize Defocus Smoothing, which first appeared in the RF 85mm f/1.2L USM DS.
Canon RF 24mm f/1.4L USM DS
- Focal length: 24.55mm
- F-Number: 1.45
- Half angle of view: 41.39°
- Image height: 21.64mm
- Overall length: 119.13mm
- BF: 38.01mm
Canon RF 50mm f/1.4L USM DS
- Focal length: 52.13mm
- F-Number: 1.45
- Half angle of view: 22.54°
- Image height: 21.64mm
- Overall length: 85.51mm
- BF: 37.71mm
Canon RF 135mm f/1.4L USM DS
- Focal length: 131.00mm
- F-Number: 1.41
- Half angle of view: 9.38°
- Image height: 21.64mm
- Overall length: 182.28mm
- Back focus: 13.87mm
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