Canon Patent Hints at Compact

Summary

Canon has filed a patent for a series of prime lenses designed for full-frame cameras, potentially leading to more compact and quiet autofocus options. The patent, published by the Japan Patent Office, details an inner-focusing system where a middle lens group moves, aiming to suppress aberrations and maintain a compact size. Potential focal lengths include 55mm f/1.8, 85mm f/1.8, and 131mm f/2. The design suggests a focus on quieter operation, possibly using Voice Coil Motors (VCM) which are advantageous for video recording compared to traditional ultrasonic motors used in some current RF lenses. Canon plans to continue releasing six to eight RF lenses annually, and these patented designs could offer differentiation through VCM technology.

Key points

• Canon patent filed for compact, quiet prime lens designs.
• Lenses feature inner-focusing system to suppress aberrations.
• Potential use of Voice Coil Motors for video-friendly autofocus.
• Patent covers focal lengths like 55mm f/1.8, 85mm f/1.8, and 131mm f/2.