For the photo shown to the right, taken at night in a Texas ghost town, Danser assembled the following items: a powerful, handheld LED light; his Canon 5D Mark iii camera and Canon 16-35 mm L lens (at 16mm); Canon 580ex 2 flash; a red gel (piece of red cellophane to color the light of the flash); a tripod; and his girlfriend’s finger (to graciously hold down the shutter release button because he forgot his bulb release at home!).

Danser told Pegasus: “So, I set my camera on bulb mode and had my girlfriend hold down the shutter release button for 13 minutes, while the camera was very sturdy on the tripod. The place was pitch black except for the stars and the moon (very little ambient light pollution in the desert). As my girlfriend was keeping the shutter open, I walked to one side of the structure and methodically shined my flashlight (rated at 2000 lumens, so it’s pretty bright) all along the exterior and front facade of the building. This lasted for about five minutes before I turned the flashlight off and ran to the other side of the building and ‘painted’ for another five minutes.”

Danser said that one of the important tricks of light painting is to show off the textures of the buildings by shining his LED flashlight at an angle instead of from the camera position.

After “painting” the sides of the building for five minutes each, he ran inside and popped off about 10 red-gelled flashes to create the effect of a warm glow pouring out of the building.

When asked how he was able to run in and out of the building without showing up in the photo, Danser simply replied that “The camera could not ‘see’ me because I was moving quickly, and there wasn’t enough ambient light to expose me in the picture.” While popping off the gelled flashes in the building, he always made sure he was not visible to the camera.

After 13 minutes at an aperture of 2.8, Danser was able to get an excellent exposure of the night sky while having ample time to do all of the “light painting” that he had planned beforehand.

Soon I hope to try some light painting of my own with less expensive equipment to show you how anyone can adopt Danser’s technique. After all, light can be used in all kinds of art and photography projects.

In the meantime, check out this Danser’s website to see tons of beautiful experiments playing with—and painting with—light. Thanks, Matt!

Advanced lighting control systems (ALCS) utilize electronic circuits with a programmable logic controller to automatically adjust lighting levels.  Program a number of variables and light requirements to get the lighting just perfect. This helps in providing the right amount of light where and when it is needed, hence improving energy efficiency and savings.

Advanced lighting control systems provide benefits like automatic scheduling and dimming. Turn lights off based on room occupancy and level of daylight. In so doing, the ALCS adjusts the light levels to match the requirements at any particular time. For example, when a room is empty, lights dim or go off completely. This saves on utility costs.

The sensors communicate with the lighting control system through wired or wireless connections. In some applications, sensors are integrated into the lighting control. While the wired network requires hand wiring of all the devices, the wireless communications use radio frequencies. Therefore several benefits exist over the wired network.

Wireless technology eliminates the need for wiring and is, therefore, cheaper, easy to implement and modify. It provides more flexibility while reducing the planning time for the electrical system. Wireless lighting controls are ideal for hard-to-reach lights. These include places where there are non-accessible or hard ceilings, basements, and other expensive or hard-to-wire areas.

The controller automatically adjusts the level of illumination based on one or a combination of the following variables.

The controls utilize room occupancy or proximity sensors to check for activity in the room or target area. If there is no activity, the controls automatically switch off or dim the lights. The system will then turn the lights to full brightness when room occupancy sensors detect someone within a defined space.

Different lighting levels are required based on the activity. In some applications such as warehouses, there is no need to keep all the lights on when areas are not in use. The lighting control systems will either turn off or dim most of the lights. Some advanced systems provide just enough light in the open spaces. Yet, more light becomes available near shelves where a worker might be picking up or replacing items.

Additional light is required during office hours when people are working. However, this isn’t necessary during the lunch break, or when offices are being cleaned. A combination of controls may be used here. Take advantage of daylight, dim or completely turning off the lights when more natural light filters into the room.

The programmable controls can be used to switch individual or groups of lights depending on time of day. These programs run 7 days a week. Consequently, there’s a separate schedule for weekdays, weekends, and holidays. In an office setup, a timer ensures that all lights, apart from security lights, are turned off at night, during the weekends and on holidays.

Instead of using the lamp at its maximum rating when new, the controls dim the light in certain cases. This reduces the normal wear and tear. As the lamp ages, its level of illumination will decrease. However, instead of the light level going down, the control will decrease the dimming level and maintain the required level of light.

So instead of powering the light at 100% and wasting energy with excess light that is not required, the controller ensures light is powered at a lower percentage. This ensures that required light is provided, but at a lower power consumption.

Factors considered when implementing a lighting system include the need for flexibility, facility size, floor plans, facility use, daylight hours, and building codes. Other considerations include the cost-effectiveness of the system, the ease of use, visual performance and comfort.

In addition to controlling the lights, the advanced lighting control systems help in determining the occupancy patterns. Moreover, the operating status of part or whole sections and the entire system’s performance is monitored. This provides business owners with an opportunity to evaluate the effectiveness of the installation and make adjustments.

The strike doesn’t even have to be a direct hit on your home but can occur within half a mile.  As a matter of fact, the majority of surges that most people take are from problems at someone else’s home or somewhere further down on the power company lines.  A surge doesn’t have to be lightning; it can come from an automobile accident that hits a power pole or even from a routine maintenance on the main power lines when they turn the power back on.  This off and on of the power with the main electrical lines can send surges into your home or business that I have seen destroy lots of electronic equipment and appliances.

Almost every home has multiple computers, and expensive home entertainment systems.  Even our appliances are high-tech with monitors built into the doors of refrigerators and laundry appliances with electronic controls.  These items are especially vulnerable to spikes in your home’s electrical current that may cause melted circuit boards and overheated wires.  Repairs to these expensive gadgets are much more costly than replacing a blown out light bulb or electrical outlet.