1. Characterization:
* Films often exaggerate Sherlock's eccentricities. While Doyle's Holmes is certainly unconventional, films tend to amplify his quirks (like his drug use or his disregard for social norms) for dramatic effect. This can sometimes portray him as more erratic and less intelligent than in the books.
* Watson is often portrayed as less competent. In the books, Watson is a capable doctor and a trusted friend who often assists Holmes with deductions. Films often depict him as more bumbling and reliant on Holmes, which can diminish his role and importance.
* Other characters are often changed. The books feature a variety of supporting characters, some of whom are given more prominent roles in films (like Mycroft Holmes) while others are omitted entirely. These adaptations can alter the relationships between characters and the dynamics of the stories.
2. Plot and Mystery:
* Films often simplify the mysteries. Doyle's stories are known for their intricate plots and complex deductions. Films sometimes streamline these mysteries, making them easier to follow for a wider audience but losing some of the intellectual complexity.
* Films often add action and spectacle. To appeal to modern audiences, many Sherlock Holmes films inject action sequences and visual effects into the stories. While the books are filled with suspense, they focus more on the intellectual process of deduction than on physical confrontations.
* Films sometimes deviate from the original plot. While some films remain faithful to specific Doyle stories, others take liberties with the source material, adding new characters, subplots, or even entirely original cases.
3. Tone and Atmosphere:
* Films can vary in tone. Some films capture the Victorian atmosphere of Doyle's stories, while others take a more modern or comedic approach. The original books are generally written in a serious, often macabre tone, while films can explore a wider range of genres.
* Films often emphasize visual storytelling. The use of cinematography, set design, and costume can enhance the visual impact of the stories. While the books rely heavily on the written word to create atmosphere and tension, films can take advantage of visual elements to further engage viewers.
In summary:
While Sherlock Holmes films provide an enjoyable and accessible way to experience the stories, they often differ from the source material in terms of characterization, plot, tone, and atmosphere. It's important to remember that films are adaptations, and they may not always accurately reflect the nuances and complexities of the original books. However, they can offer a unique and entertaining perspective on the world of Sherlock Holmes.