Canon filed a new patent in Japan. The new patent describes the EF 50mm f/1.4 prime lens designed for Canon DSLRs with full-frame image sensors.
From the patent application we can say the EF 50mm f/1.4 lens will have 10 elements in six groups. See the patent details below.
Current EF 50mm f/1.4 USM lens was released in 2003 and selling at a price around $350.
Canon EF 50mm f/1.4 Lens Patent
- 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)
Canon’s EF 50mm f/1.4 USM lens is a standard length lens featuring superb quality and portability. Its f/1.4 maximum aperture makes it very effective in low light situations and able to provide shallow depth of field focus.
via Egami
