Canon filed a new patent of new 50mm F1.4 Lens, the lens features new and improved AF mechanism that will speed up the AF locking time as well as make it noise less co,pared to the current version of Canon 50mm F1.4 Lens.
Explanation and self-interpretation of the patent literature
- Patent Publication No. 2015-138121
- Published 2015.7.30
- Filing date 2014.1.22
- Example 1
- Focal length 49.10
- F number 1.45
- Half angle (in degrees) 23.78
- Image height 21.64
- Overall length of the lens 100.16
- BF 38.10
- Canon patents
- Positive ShiboTadashi
- Inner focus (part of the first group)
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