The ADJ EP Lens 50 is a dedicated 50-degree lens tube designed for the Encore Profile Pro series of ellipsoidal reflector spotlights (ERS). This accessory lens allows lighting designers and technicians to change the field angle of the fixture, providing a medium-narrow beam spread suitable for medium-range focus, key lighting, or specials. The lens tube is engineered to drop into the fixture's interchangeable lens slot, aligning precisely with the ellipsoidal reflector and gate system to project a sharp, controlled beam with defined edges. The 50-degree spread offers a balance between the wide coverage of a shorter focal length lens and the tight pin-spot effect of a longer one, making it versatile for theatrical stages, concert lighting, and architectural highlighting where precise beam control and shaping are required.

Constructed from durable aluminum with a matte black interior finish to minimize internal reflections and light scatter, the lens tube houses a high-quality optical glass lens. The design ensures optimal light transmission and maintains the integrity of the projected image, whether using a standard pattern/gobo or shaping the beam with the fixture's shutters. Changing the lens tube is a straightforward process that allows a single fixture to be adapted for different purposes throughout a production, enhancing the flexibility of the lighting inventory without the need for additional fixtures. This interchangeability is a key feature of professional ellipsoidal design, enabling quick re-focusing and re-purposing of lights between scenes or shows.

As part of the Encore Profile Pro accessory system, the EP Lens 50 is built to the same specifications as the fixture itself, ensuring a perfect fit and reliable performance. It is an essential tool for fine-tuning the lighting plot, allowing designers to match the throw distance and beam size to the specific requirements of each focus position. By offering a defined, medium-narrow field angle with sharp cutoff, this lens tube helps create clean, dramatic lighting looks with controlled spill, contributing to the overall visual impact and professionalism of the production.