ARCA-SWISS International (Valentin, France, email@example.com) is marketing a line of tripod heads that puts an end to the hassle involved in setting the levers of the 3-D tripod head. Specifically designed for digital studio and architectural photography, the d4 and d4m gearheads provide precise, repeatable movement, with the least possible work. With the new heads, every tilt movement has its own fine-tuning knob and a lockable free wheel button. When both knobs are unlocked, then the tilts can be carried out in freewheeling mode, which gives photographers the versatility found in a spherical head. Price: d4 $1102; d4m $711.