Canon has just filed a new patent of EF-S 20mm F2.8 STM lens. It is similar to the current Canon EF-S 24mm F2.8 STM lens. We hope this will be the next pancake lens for Canon APS-C DSLRs.
Patent Publication No. 2015-111192 (Google Translated)
- Published 2015.6.18
- Filing date 2013.12.6
Example 3
- Focal length 20.65mm
- Fno. 2.88
- Half angle of view ω = 33.48 °
- Image height Y = 13.66mm
- Overall length of the lens 64.00mm
- BF 35.30mm
Source: EG
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