Since Ammonite features many dark, moody shots of the English coast, the Blu-ray source is crucial for maintaining detail in shadows that might otherwise be lost in lower-quality versions. Summary of the Movie Experience

For those who value storage space without sacrificing too much visual fidelity, this 800MB BluRay rip is an excellent choice.

800MB is an intentional sweet spot:

The story is set in the 1840s, following a weathered and solitary (Winslet), who spends her days scouring the beaches for fossils to support herself and her ailing mother. Her life of isolation is disrupted when a wealthy visitor, Roderick Murchison , pays her to look after his melancholic wife, Charlotte (Ronan), while he travels. Ammonite (2020) - IMDb