Four new Canon lens patents

Here are some of the latest Canon lens patents filed in Japan:

Canon EF 11mm f:4L USM lens
→ Canon EF 11mm f/4L USM lens

Canon 70-200mm f:2.8 DO lens patent
→ Canon 70-200mm f/2.8 DO lens

Canon EF 28-135mm f:4-5.6 lens
→ Canon EF 28-135mm f/4-5.6 lens

Canon EF 24-105mm f:4 lens patent
→ Canon EF 24-105mm f/4 lens

Via Egami

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