Canon Patents

Patent: Canon EF-S 11-24mm f/3.5-4.5

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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