Yes, clear, dated photos or videos can help document the property's condition when you move in and leave. Photograph each room, appliances, fixtures, existing damage and meter readings, and keep copies with the inventory, emails and messages about repairs. At the end of the tenancy, take similar images after removing your belongings and cleaning, ideally before handing back the keys. Photos are useful evidence, but they do not guarantee that every deduction is invalid; any dispute about the deposit is ultimately decided through the RTB process, based on the full evidence and circumstances.