You can write about the copyright of photographic works and the copyright of photographic equipment.
1. Copyright of photographic works: As a creative achievement, photos taken by SLR cameras fall within the scope of copyright protection. Copyright of photographs belongs to the author of the photograph, the photographer. Anyone who wants to use these photos needs to obtain the photographer's authorization or pay the appropriate copyright fees.
2. Photographic equipment copyright: As a kind of photographic equipment, the SLR camera itself also involves the protection of intellectual property rights such as patents and trademarks.