Canon has just filed a new patent: EF 600mm f/4 DO IS USM Lens. Canon released their EF 400mm f/4 DO IS II USM lens last year and this new patent is for another super telephoto “DO” lens.
- Patent Publication No. 2015-11171
- Published 2015.1.19
- Filing date 2013.6.28
- Example 2
- Focal length 588.30mm
- Fno. 4.12
- Angle of view 2.11 °
- Image height 21.64mm
- Lens length 397.80mm
- BF 2.02mm
- Positive ShiboTadashi
- Inner focus
- Vibration control
Source: EG
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