Is fuji direct film half-frame the same as medium-frame?

Fuji direct film effect half frame medium frame In the film age, the frame often refers to the area where the camera images on the film; In the digital age, it is not the film that is responsible for imaging, but the image sensor inside the camera, so what we often say now is the size of the sensor area. So what are the common format specifications? Arranged from small to large, it can be divided into 1/3 inch, 1/2.3 inch, 1 inch, M4/3 frame, APS-C frame, Quan Huafu frame and medium frame. The medium-sized frame sensor itself also includes different specifications, such as 44× 33mm and 53.7× 40.4mm..