Finding uncompressed, original files is better than watching compressed YouTube reviews. Here are the most reliable download sources:

’s 12.1MP full-frame sensor truly delivers the "organic" look Sony promises. The Hunt for Raw Data: Most filmmakers start at the Sony Cine Test Footage Page

primarily focuses on VENICE and BURANO, it is the official hub for high-end Sony cinema samples FilmPlusGear : This site offers specific test files for download

Reputable review sites like CineD (famous for their dynamic range latitude tests) and Newsshooter provide direct download links in their video descriptions.