What resolution is indicated by the 2nd digit (2) in the Axis naming convention?

The resolution indicated by the 2nd digit (2) in the Axis naming convention refers to 4CIF, which has a resolution of 704x480 pixels. This fits within the context of video surveillance standards and formats that Axis utilizes in their product naming conventions.

In the Axis naming system, the digits and letters are often representative of different features and capabilities of the cameras, including resolution. The second digit's specific indication of 4CIF aligns with a commonly used resolution in video surveillance that offers a practical balance of quality and data management.

While other options present different resolutions—VGA, 5MP, and 3/4MP—each correlates to other digits or aspects in the naming conventions, but they do not align with the specific indication of the second digit as accurately as 4CIF does. Therefore, the choice of 4CIF provides a clear and valid representation of the resolution indicated in this context.