A new EF-S Lens patent surfaced over the web that shows Canon 20mm F2.8 STM Lens details, from the name it is very clear that the upcoming lens will have Step drive motor to enable fast and silent Auto Focusing,
Take a look at the details below translated via google –
Explanation and self-interpretation of the patent literature
- Patent Publication No. 2015-111192
- 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
Also see – Canon to Bring Back Pellicle Mirror in Upcoming DSLRs
src – egami.blog.so-net.ne.jp/
