It allowed the operator to position himself above the camera itself, meaning that in shallow depths of water, such as the places where Reighard worked, there was no need to submerge oneself entirely in order to take photographs, because instant photographs could be taken with natural light, and the focus could be adjusted at will; all of which was an improvement on what Boutan had done compare Figures 1 and7.
Permitía que el operador se ubicara por encima de la misma cámara, posibilitando, de ese modo, tomar fotografías sin necesidad de sumergirse completamente en lugares de poca profundidad, como era el caso de los sitios donde Reighard trabajaba, permitiendo así tomar fotografías instantáneas, con luz natural, y pudiendo manipular el foco a voluntad; todo lo que implicaba una mejora con respecto a lo realizado por Boutan comparar Figuras 1 y 7.