Back in January I posted that Lowe's home improvement stores were now selling dark-sky friendly lighting. I took some before & after pics from a house that just had its lighting upgraded. Let's take a look at what a difference it can make.
In both the before and after shots there were 60-watt incandescent bulbs in the fixtures. Because the new light fixtures put more light where it is needed it is possible to use light sources that produces less total light.
Here's an example that shows off what can be done.
What about the total amount of light? The 60-watt bulb puts out about 800 lumens of light while this particular LED puts out just 83 lumens. That's quite a reduction. Some people will feel that this would be dropping the intensity of the light more than they are comfortable doing, but the old 60-watt bulb was dramatically overlighting the area, even before the lamps were replaced.
This dramatically shows that when switching away from incandescent lighting to LED or fluorescent light sources it is important to pay attention to the total amount of lumens of light they produce. Making the switch will save energy, bu in most cases people are already using too much light, so it is possible to save even more. So, unless you feel that an area is too dark, it is advisable go for a lumen reduction for lighting (indoors or outside).
Imagine what a difference it would make it more homes made this conversion.
There's a wide-range of options when it comes to LED light sources. This particular one is an amber LED. It was chosen because it has less impact on the night sky and on the natural world. In some areas, such as near sea turtle nesting beaches, light sources such as these are of vital importance.
In case you were wondering, the same camera settings were used for all the shots here, except this one:
Portfolio 7-in Oil-Rubbed Bronze Dark Sky Outdoor Wall Light." It retails for just under $30, but they have other options that are less expensive. The lamp, like others in their Good Neighbor / Dark Sky line have been approved by the International Dark-Sky Association (IDA). In the interest of full disclosure, I work for IDA but am blogging this on my own because that's how I roll.