Godox AD21 K3 KNOWLED Diffusion 40 x 60
Transform your lighting with the compact Godox KNOWLED AD21 K3, a motorized 40 x 60 cm electronic diffusion panel. Instantly shift from hard shadows to ultra-soft light using precise electronic controls. Choose Level Mode (0-100%) or Light Reduction Mode (-0.1 to -2.0 EV) for pro-level accuracy. Patented frequency tech delivers flicker-free performance up to 300fps. Power via USB-C, V-mount, or NP-F batteries for 20-hour runtime, and control with DMX, Bluetooth app, or CRMX for ultimate set flexibility.
Motorized Diffusion Lighting Evolved
Instantly adjust your diffusion level—smoothly and quickly shifting from hard shadows to ultra-soft illumination. Precise motorized control enables dynamic diffusion changes exactly when and how you need them, enhancing flexibility on set and expanding creative possibilities.


Flexible Power Solutions, Extended Runtime
Powered via USB-C, V-mount batteries, or NPF batteries. Achieve up to 20 hours of continuous use at full load from a single 100Wh battery—covering even the longest shooting days.
Precision Dimming with Dual Modes
Supports both Level Mode and Light Reduction Mode. Level Mode enables 0-100% visualized quick adjustments, providing intuitive diffusion control. Light Reduction Mode offers a -0.1 to -2.0 EV range, designed to match professional workflows.


Patented Frequency Adjustment Technology
Features patented frequency adjustment technology, supporting five frequency levels to ensure flicker-free operation tailored to different frame rates. Compatible with frame rates up to 300fps.
Easy Storage
The collapsible frame ensures compact storage and rapid deployment. A removable, Velcro-attached diffusion panel allows convenient storage and quick replacement.


Three Size Options
Available in three sizes to accommodate various production needs.
Versatile, Reliable Control
Control it your way—both controllers support operation via controller, Bluetooth APP, and DMX. Additionally, the AD00-01 controller integrates a built-in CRMX transceiver, ensuring stable, low-latency wireless control. Lead/Follow mode lets one controller sync them all for smooth, unified adjustments on set.

Two Controller Options
Each size of the adjustable diffusion panel offers two controller options, letting users choose based on their specific workflow and daily needs.











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