Is Canon working on a replacement to the very good EF-S 10-22mm f/3.5-4.5? By the looks of this patent they are. I'd expect any replacement to have STM and maybe a bit better build quality, though the current one is about as reliable as they come.
Example 3 (Google Translated)
- Zoom ratio 2.07
- Focal length 11.61-15.50-24.07mm
- Fno. 3.63-3.96-4.69
- Half angle ω = 49.64-41.38-29.58 °
- Image height Y = 13.66mm
- Overall length of the lens 133.0-129.1-133.3mm
- BF 3.26mm
- Negative positive and negative positive 4-group zoom
- Inner focus (Lf part of the first group)
Source: [EG]
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