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A patent uncovered by Northlight shows the optical formulas for zooming tilt-shift lenses has appeared over at the USPTO.
The patent appears to mention two separate and interesting tilt-shift lens technology.
The first, the patent shows two internal shift modules. This would help to maintain image quality when tilting the lens. The patent shows a 50mm f/4 design with the two shift modules.
The second part of the patent shows off new zooming tilt-shift lens designs.
Both a 24-100mm f/4 and a 30-80mm f/4 are included as embodiments.
Canon TS-E 24-100mm f/4 embodiment:
- Focal length: 24.74mm – 49.55mm – 99.94mm
- F-number: 4.13 – 4.31 – 4.42
- Half angle of view: 41.17° – 23.59° – 12.21°
- Image height: 21.64mm – 21.64mm – 21.64mm
- Total lens length: 159.00mm – 174.75mm – 200.33mm
- BF: 43.99mm – 55.44mm – 69.75mm
Canon TS-E 30-80mm f/4-6.3 embodiment:
- Focal length: 31.15mm – 55.06mm – 129.92mm – 39.12mm – 83.69m
- F-number: 4.52- 5.96 – 6.08 – 5.97 – 6.07
- Half angle of view: 34.78° – 21.45° – 9.45° – 28.94° – 14.49°
- Image height: 21.64mm – 21.64mm- 21.64mm – 21.64mm – 21.64mm
- Total lens length: 168.22mm – 182.25mm – 205.02mm – 173.45mm – 192.88mm
- BF: 55.33mm – 69.40mm – 89.40mm – 61.34mm – 78.11mm
These designs are for the EF mount, but we suspect any updates to the wide angle tilt-shift lenses or even going the zoom route will be for the RF mount.
