The WDS-580 viewfinder is a 120 degrees viewer used for indication of the framing of the image.

It comes with an included extension bracket. Masks are available for most focal lengths. The viewfinder has a built-in sprit level for assistance with handheld shooting.

To mount the viewfinder slide it into the accessory mount from the backside of the camera. It can be mounted with or without the extension bracket. The advantage of using the extension bracket is that the viewfinder is lifted over the digital back closer to the eye of the photographer. Because the extension bracket introduces an extra joint, Cambo does not guarantee that the spirit level inside the viewfinder is exactly aligned with the ones on the main housing it selves.

Masks can be clipped to the front of the viewfinder. These masks feature a center pair of crosshairs and a frame for the current 37x49/40x55 CCD format. Aside the frame there is a set of millimeter scales which indicate the displacement of the images with the same amount of shift applied. The mask can be rotated while mounted to switch between landscape and portrait position. Masks are interchangeable on the WDS-580 viewfinder, release the masks by pulling close to the bottom click position.