The 303PLUS advanced panoramic photography head is built around the 300N pan rotation unit, with sliding plates for nodal point positioning and an elbow bracket to allow the camera to be mounted in either portrait or landscape orientation.
It incorporates precise geared movements of the two sliding plates used to locate the camera over the panoramic axis of rotation, adding greater accuracy to nodal point positioning. The micro-positioning plates provide extremely precise fingertip adjustment via a gear drive system; a release button disengages the gear drive to facilitate rapid movement of the plates when required.
The plates are also longer than those of the 303 head, which helps to make this head suitable for use with larger traditional or digital SLR cameras equipped with standard or wide angle lenses, or for medium format cameras.
The head is not supplied with a leveling system to give the photographer the choice of leveling the head with either 1) just the tripod, or 2) with the 3416 or 3402 leveling bases, or 3) one of the three leveling center columns 554, 555b or 556b.
The Head weighs 4.4 lbs and is 12.3" high with a maximum load capacity of 11 lbs.