The SIRUI P1836A 18°–36° Stepless Zoom Projector Lens is a precision lighting accessory designed to give photographers and filmmakers creative control over beam angle, focus, and light shaping—all in one compact, Bowens-mount-compatible unit.

This projector lens attaches to COB lights (recommended for use with lights under 200W) and allows you to adjust the beam angle from 18° to 36° without swapping lenses. With a simple twist of the zoom ring, you can fine-tune the light’s spread and focus, making it ideal for spotlighting, shaping shadows, and projecting patterns using included GOBOs and shutter blades.

Features:

• Stepless Zoom Range: Smoothly adjust beam angle from 18° to 36° with one hand.
• Built-In Shutters: Four blades let you cut and shape the light precisely.
• GOBO Compatibility: Includes 15 GOBO patterns and a holder for creative projection effects.
• Color Filters: Red, yellow, and blue filters included for stylized lighting.
• Fan Cooling System: Magnetic, battery-powered fan helps dissipate heat during extended use.
• Bowens Mount: Compatible with SIRUI Blaze and CS Series monolights and other Bowens-mount COB lights.
• Compact & Durable: Aluminum alloy body with heat-resistant design; weighs just 1.7 kg (3.8 lbs).