Theia's lens calculator can be used to help the CCTV integrator/installer to understand the level of detail in an image and field of view that can be seen with different lens and camera combinations. Can you recognize a person or read a license plate? Do you want to visualize the tradeoff between megapixel camera resolution, lens focal length, and image resolution?
The calculator will simulate the image resolution of a target at a given distance and the field of view at that distance. The image represents what would be visible on a monitor for an object at that distance and resolution. You can select different lens focal lengths and fields of view to see how this affects the level of detail visible in the image.
- iPod Touch