Every so often we see new big white lens patents, and this time we get another round of designs for the EF mount. There doesn't appear to be anything here that shows these designs are for the RF mount.
Canon 400mm f/2.8
- Focal length: 392.56 mm
- F no: 2.90
- Image height: 21.64 mm
- Lens length: 371.16 mm
- Back focus: 59.99 mm
Canon 500mm f/4
- Focal length: 489.05 mm
- F no: 4.12
- Image height: 21.64 mm
- Lens length: 411.08 mm
- Back focus: 86.24 mm
Canon 600mm f/4
- Focal length: 584.99 mm
- F no: 4.12
- Image height: 21.64 mm
- Lens length: 476.28 mm
- Back focus: 87.97 mm
Canon 800mm f/5.6
- Focal length: 778.44 mm
- F no: 5.80
- Image height: 21.64 mm
- Lens length: 489.01 mm
- Back focus: 48.66 mm
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