Google Lens is a visual search tool available in the Google app for both Android and iOS. It allows users to search what they see with their camera, take pictures or screenshots, or long press images while browsing to get a range of visual results. Every month, there are over 12 billion visual searches on Lens. Lens can identify buildings, landmarks, plants, and animals, providing links to learn more about them. Additionally, it can help identify and search for visually similar skin conditions by analyzing pictures uploaded through the app.
source update: 8 ways Google Lens can help make your life easier