With Source Four Zoom you only need one fixture for a variety of field angles. Plus, Source Four Zoom makes it easy: ETC's patented one-handed zoom operation makes adjustments quick, simple and safe. Technicians can focus with one hand and hold the ladder with the other. And the lens-tube door provides quick and easy access when you want to clean the lens assembly (tool-free!). But the best part is that Source Four Zoom has all the advantages of the revolutionary fixed-focus Source Four: bright, even field, cool beam, and amazing efficiency. The patented dichroic mirror means shutters and accessories stay cool, and drop-in accessories are interchangeable with fixed-focus Source Fours. Rated up to 750W, Source Four Zoom gives you Source Four's crisp optics for excellent imaging and field quality. Product Features * Rated up to 750W * 15º-30º and 25º-50º Zoom ranges * Super-efficient HPL lamp * Faceted dichroic reflector removes 90% of IR heat from beam * One-handed zoom operation * Positive zoom lock * Field angle and focus scale markings * Rotating barrel ± 25º * Three-plane stainless-steel shutter blade assembly * Tool-free lamp adjustment * Easy access lens cleaning * Insulated rear handle * Rugged die-cast and extruded aluminum construction