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Another lens patent from Canon, this time for an EF-S 20mm f/2.8. Are we going to see a series of inexpensive EF-S primes in the future? This is pretty close to the 24mm f/2.8 STM pancake though.
Patent Publication No. 2015-111192 (Google Translated)
- Published 2015.6.18
- Filing date 2013.12.6
- 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
- Negative ShiboTadashi
- The pay-out the entire
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