Canon filed a new patent application in Japan for a EF 1000mm f/5.6 DO lens. Here are the details:
- Patent publication: 2016-102852
- Published on: 2016.6.2
- Filing date: 2014.11.27
- Zoom ratio: 1.00
- Focal length: 950.00
- F-number: 5.80
- Angle of view: 1.30
- Image height: 21.64
- Overall length of the lens: 485.94
- BF: 0.40
- Diffractive optical element (first group)
- Inner focus
Via Egami
