The Denz Flange Depth Controller "FDC" is a new development (patent pending) for the flange depth control of digital video cameras with 54 mm PL-mount.

The determination of the flange depth is based on the cross-fading principle. By means of two lenses two different masks will be projected on the CCD-chip. By turning the adustment wheel the focal position of the Flange Depth Controller to the CCD will be changed. This adjusting of the focal position effects a moving of the projected masks to the CCD.

When the position of the red bar is exactly between the two green bars you can read-out the precise flange depth on the scale of the adustment wheel.