What process involves manually immersing films in dip tanks?

The process of manually immersing films in dip tanks is referred to as manual processing. This traditional method involves the use of chemical solutions in a controlled environment and generally requires the user to immerse the film in developer and fixer solutions for a specific period of time.

Manual processing offers the advantage of allowing the operator to have full control over the exposure and development times, which can be beneficial for achieving the desired quality in the final images. This technique provides a tactile experience as the technician engages directly with the film and processing solutions.

In contrast, automatic processing employs machines designed to automate the immersion and development of films, which reduces the hands-on involvement of the operator. Digital processing utilizes electronic means to develop images, eliminating the need for traditional film altogether. Rapid processing is a faster version of automatic processing designed for efficiencies in time but still operates using machines.

Thus, manual processing is the correct understanding of the method that involves the physical act of immersing films in dip tanks.