The Sunwayfoto DB-44DL Ball Head With Duo Lever Clamp is an extremely sturdy ball head with a greatly improved screw-knob and lever Arca-style clamp for compatibility with a wide variety of dovetail camera plates. The DLC-50 clamp has a screw knob on one side and a lever on the other; the knob adjusts the width of the clamp, and the lever locks it. It will accommodate any Arca-style plate in a range of 38mm to 41.5mm. The DB-44L features separate controls for pan lock, tilt lock, and friction. There are dual tilt grooves to accommodate switching to portrait orientation as well as full 90° front-to-back tilt without needing to alter the head's pan position.
Like other higher-end ball heads, the DB-44L features an ellipsoidal ball that helps it better handle off-center loads – this shape introduces progressive resistance to reduce accidents. But for smoother operation, the aspherical nature of the ball is subtler than that of other heads – the y-axis diameter is only 0.03mm longer than the x-axis diameter (other similar heads typically have a disparity of 0.07mm). The DB-44L supports loads up to 66 lb.
Rigorous testing has resulted in a very strong shell. The control knobs of the DB-44L are 100% metal – no plastic or rubber is used. This ensures a smooth operation as well as reliability and durability.
Well-marked components facilitate precise positioning. The tilt lock knob is laser-engraved with marks from 1 to 12, and the pan base features laser-engraved degree markers in increments of 5°. These, combined with the independence of the pan and tilt locks, make the DB-44L well-suited for capturing horizontally overlapping photos in order to create panoramas.