【Adjustable Beam Angle】Adopt rotating barrel design, control the LED video light by rotating the fresnel mount, the smooth focus projection allows you to precisely adjust the beam angle of the light source, allowing you to easily adjust from 10°spotlight to 40°flood, ideal for macro and high-speed photography / film lighting / lighting for video recording. | 【To strengthen the output】With dual-lens design, the GVM F40 Fresnel lens can increase the light output by nearly X times. The rear lens focuses and magnifies the beam to the larger front Fresnel lens, maximizing light use with zero light waste.Suitable for all studio lights and enrich the shooting effect. | 【Wide Compatibility】Suitable for any video lighting. With its Bowens mount design, this Fresnel can be attached to countless lights for photography, such as GVM SD80 SD200 SD300 P80S PR150 etc. | 【Portable & Durable Photography Accessories】We have never been sloppy in terms of materials, made of high-quality metal and plastic, resistant to high temperatures of 150°C, has a long service life. The included carrying bag can easily follow you no matter where you go to shoot. | 【We Do Our Best】In addition to high-quality products, we have a complete and patient after-sales service. We will try our best to solve any problems encountered during use. In the field of photography lights equipment, we are professional.