When referring to a lens system, a higher f-number will result in less _ being available to form an image on cine film.

In photography and imaging, the f-number, also known as the f-stop, is a measure of the aperture size of the lens system. A higher f-number indicates a smaller aperture, which reduces the amount of light entering the camera or imaging system. When the aperture is smaller, less light is available to illuminate the scene or subject, leading to a decrease in the overall exposure of the image captured on cine film.

In the context of radiography and fluoroscopy, sufficient light is critical for producing high-quality images with proper exposure. If the available light is reduced due to a higher f-number, it can result in underexposed images, which can adversely affect image quality and detail. This concept underscores the importance of managing exposure in imaging techniques, ensuring that the right amount of light is utilized for optimal image formation.

Understanding the relationship between f-number and light availability is essential for effectively utilizing optical systems in both film and digital imaging environments, especially in medical settings where accurate diagnostics depend on high-quality imaging.