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The Bokeh Size Calculator is a web application designed to help photographers and enthusiasts understand the relationship between sensor sizes, aperture settings (F-values), and the resulting bokeh effects in photography. The app allows users to visualize how different sensor dimensions and crop factors influence bokeh size, providing a practical tool for making informed decisions about camera equipment and settings. To use the app, users can adjust the aperture value using a slider or by entering a specific number in an input field. The app features a set of predefined sensors, including Full Frame, APS-C, m4/3, 1-inch, and smartphone sensors, each with its own specifications such as width, height, crop factor, and bokeh size. As users modify the F-value, the app dynamically updates the visual representation of bokeh sizes for each sensor, along with a detailed comparison table that outlines the specifications and equivalent F-values for achieving similar bokeh effects across different sensor types. The application is built using React and TypeScript, leveraging the Radix UI library for the slider component and Tailwind CSS for styling. Key features include a responsive design, interactive bokeh visualizations rendered on a canvas, and a comparison table that provides insights into how sensor characteristics affect bokeh size. Additionally, the app includes a section that explains the mathematical relationships governing bokeh size, crop factors, and equivalent F-values, enhancing the educational aspect of the tool. Overall, the Bokeh Size Calculator serves as a valuable resource for photographers looking to deepen their understanding of bokeh and its dependence on sensor size and aperture settings.