What is the fine-grained topic of the following text: The first lens to feature Tamron's USD (Ultrasonic Silent Drive) auto-focus drive mechanism and VC (Vibration Compensation) image stabilization, these proprietary technologies are teamed with XLD (Extra Low Dispersion) and LD (Low Dispersion) glass in a 17 element, 12 group formula. Only return the topic.
Tamron's lens with USD auto-focus drive mechanism and VC image stabilization