Which type of lantern is known for producing an intense beam of light ideal for special effects?

The Parcan, short for parabolic aluminized reflector, is the correct choice because it is specifically designed to produce a very intense beam of light. This intense beam allows it to create prominent highlights and sharp shadows, which are highly effective in special effects lighting. Par cans are often used in theatrical productions, concerts, and various types of performances to achieve strong visual impacts.

The other options do not fulfill this function in the same way. A general lantern may provide illumination but lacks the concentrated beam characteristic of the Parcan. Similarly, a neutral density filter is used to reduce the intensity of light rather than to produce it, while a moon box typically refers to a specific type of lighting apparatus designed to simulate moonlight, which may not yield the strong, controlled intensity required for special effects. Thus, the Parcan stands out as the most effective choice for that particular need.