What is the standard size for the imaging device in analog video systems?

The standard size for the imaging device in analog video systems is typically 1/3". This size has become the most common standard for many applications, providing a good balance between image quality, low light sensitivity, and manufacturing costs. The 1/3" format allows for a decent field of view and works well with various lens types within the specifications of analog systems.

This size is widely adopted in surveillance cameras and broadcast equipment, making it a reliable choice for professionals in the field. The other sizes, such as 1/4", 1/2", and 1/8", may be used in specific applications but do not have the same level of common acceptance as the 1/3" size for general analog video systems. Consequently, choosing the 1/3" size aligns with industry standards and optimal performance for most video applications.