This is made as two telescoping, black plastic tubes. At one end are Bowens mount tabs, at the other end is a glass fresnel lens, and in the middle you twist the two telescoping tubes to get the lens to move towards or away from the mount. It`s solid and well built. The NG-10X Fresnel Focusing Lens adapter adopts Bowens mount,suitable for most of LED studio light and flash light. It`s perfect for shooting profile, long distance shooting or old-style Hollywood effects with four color gel filters.
Rotary telescoping design, by rotating twisting to adjust the light focus angle from floodlight to spotlight (10-40 degrees) and can increase brightness of original light by up to 5-10 times. With a smaller point source as speed lights. it may work better. It allows you to get a concentrated spot of light with a nice falloff, and adds a lot of control to an otherwise ``light bomb`` of light. With a speedlight + bowns adapter, it creates tight spot which could be used the most as a background light.
Four color filter(including yellow, red, green, blue filters) are provided and snap into the front focus lens. they`re easy to snap on and can be changed quickly for creating color accents or special effects. Angle adjust from 10 ~ 40°. 5-10 times brighter when most focusing. Great light modifier for Bowens mounts spotlight studio light as Godox sl-60w sl-50w etc . It could replace grids and barn doors for your lights,especially for duplicating Hurrell-style Hollywood portraits.
It increases background spot light significantly using a speedlight. Compatible with flash light LED studio light with power less than 150W.
Note: This Studio Light fresnel focus lens adapter only work for Bowens mounts. Light is well controlled and can focuses well. Inexpensive option if you need a fresnel lens. Would be better with constant light LEDs than strobes.