I'm the maker of SugarCube. Here is a practical way to choose a photographic finish when you already have an AI image. The finish names describe a direction for generation, not a promise that every detail will stay unchanged.
Start with the job:
For a natural everyday portrait, try iPhone 13 Camera. The brief emphasizes natural light and shadow, sharpness and digital texture.
For grain and nostalgic color, try Film Camera. This is a deliberate style choice, not a more accurate version of the original.