Canon has recently filed a new lens patent on EF-S 20mm f/2.8 STM lens. Canon has already announced the EF-S 24mm f/2.8 Pancake lens recently. This seems another cheap prime lens for Canon APS-C DSLR cameras.
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
Canon patents
- Negative ShiboTadashi
- The pay-out the entire
via: EG
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