Note: The Colt-45 is only comes with a Bowen mount. The Colt-45 produces a concentrated beam for high-output, high-intensity light. The resulting beam is circular, with minimal fall-off from center to edge. Because the Colt-45 produces a 45° beam of light, it is easy to determine the placement of the light. For each foot the light is from the subject, the circle of light is 1 foot in diameter. For example, placing the light 8 feet from subject produces an 8 foot circle of light.Use the Colt-45 without a diffuser to get high output light that is excellent for using outdoors in bright sunlight. Use the sun as a backlight and the Colt-45 as a main light to blend beautifully. Add the included diffuser to use the Colt-45 in-studio for soft light with punch. The aluminum construction makes the Colt-45 durable, but lightweight.Attach the 30° grid to alter the shape and light output by channeling the light into a precise 30° beam. The resulting light is more directional and has great spill control.