To prevent ghosting and flare considerably, Canon has applied ASC (Air Sphere Coating), SSC (Super Spectra Coating), SWC (Sub Wavelength Coating), and Fluorine coatings to this lens. This hybrid lens design incorporates a video-friendly Voice Coil Motor (VCM) rear focus system with a Nano USM (Ultrasonic Motor) for precise autofocus and near-silent lens operation.
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