Patent of Canon EF-M 70-400mm f/4.5-7.2 STM Lens
According to the Egami , a new patent of Canon super telephoto zoom lens: Canon EF-M 70-400mm f/4.5-7.2 STM Lens has been posted.
According to the Egami , a new patent of Canon super telephoto zoom lens: Canon EF-M 70-400mm f/4.5-7.2 STM Lens has been posted.