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→What the heck is lux?
Most datasheets use [http://en.wikipedia.org/wiki/Lux lux] to indicate the resistance at certain light levels. But what is [http://en.wikipedia.org/wiki/Lux lux] ? Its not a method we tend to use to describe brightness so its tough to gauge. Here is a table adapted from a Wikipedia article on the topic!
Most datasheets use [http://en.wikipedia.org/wiki/Lux lux] to indicate the resistance at certain light levels. But what is [http://en.wikipedia.org/wiki/Lux lux] ? Its not a method we tend to use to describe brightness so its tough to gauge. Here is a table adapted from a Wikipedia article on the topic!
{| class="wikitable" border="1"
|-
| align="center" width="400" | Illuminance
| align="center" width="400" | Example
|- style="font-size: 90%"
| align="center" | 0.002 lux
| align="center" | Moonless clear night sky
|- style="font-size: 90%"
| align="center" | 0.2 lux
| align="center" | Design minimum for emergency lighting (AS2293).
|- style="font-size: 90%"
| align="center" | 0.27 - 1 lux
| align="center" | Full moon on a clear night
|- style="font-size: 90%"
| align="center" | 3.4 lux
| align="center" | Dark limit of civil twilight under a clear sky
|- style="font-size: 90%"
| align="center" | 50 lux
| align="center" | Family living room
|- style="font-size: 90%"
| align="center" | 80 lux
| align="center" | Hallway/toilet
|- style="font-size: 90%"
| align="center" | 100 lux
| align="center" | Very dark overcast day
|- style="font-size: 90%"
| align="center" | 300 - 500 lux
| align="center" | Sunrise or sunset on a clear day. Well-lit office area.
|- style="font-size: 90%"
| align="center" | 1,000 lux
| align="center" | Overcast day; typical TV studio lighting
|- style="font-size: 90%"
| align="center" | 10,000 - 25,000 lux
| align="center" | Full daylight (not direct sun)
|- style="font-size: 90%"
| align="center" | 32,000 - 130,000 lux
| align="center" | Direct sunlight
|}