Lux to exposure value
Type a value in lx to get it in EV instantly.
That's 19× as bright as full moonlight, while a candlelit room is 3.3× brighter. That is about 4.8 times the light of EV 0.
Convert the other way: EV to lx
What it means
How much light is that?
All values are at ISO 100. Shutter speeds assume f/5.6 and apertures assume 1/60 s, since EV fixes only the combination, not either one alone.
The math
How to convert lx to EV
Exposure value is logarithmic: EV = log₂(N² ÷ t) for aperture N and shutter time t, and each step of one either doubles or halves the light. Lux follows as lux = 2.5 × 2^EV at ISO 100.
Example: 12 lx = 2.26303 EV.
Every unit
Your exposure in every unit
Tables
lx to EV conversion table
| lx | EV |
|---|---|
| 0.625 lx | -2 EV |
| 2.5 lx | 0 EV |
| 10 lx | 2 EV |
| 40 lx | 4 EV |
| 160 lx | 6 EV |
| 640 lx | 8 EV |
| 2,560 lx | 10 EV |
| 10,200 lx | 11.9944 EV |
| 41,000 lx | 14.0014 EV |
| 81,900 lx | 14.9996 EV |
| 164,000 lx | 16.0014 EV |
| 655,000 lx | 17.9992 EV |
EV to lx conversion table
| EV | lx |
|---|---|
| -2 EV | 0.625 lx |
| 0 EV | 2.5 lx |
| 2 EV | 10 lx |
| 4 EV | 40 lx |
| 6 EV | 160 lx |
| 8 EV | 640 lx |
| 10 EV | 2,560 lx |
| 12 EV | 10,240 lx |
| 14 EV | 40,960 lx |
| 15 EV | 81,920 lx |
| 16 EV | 163,840 lx |
| 18 EV | 655,360 lx |
Quick answers
Quick answers
- How many EV is 1 lx?
- 1 lx is -1.32193 EV.
- How many EV is 10 lx?
- 10 lx is 2 EV.
- How many EV is 12 lx?
- 12 lx is 2.26303 EV.
The units
About these units
Lux (lx)
Incident light falling on the subject, as a handheld meter reads it.
Exposure value (EV)
The photographer’s scale at ISO 100. Each step is one doubling of light.
Keep going