The tables in this topic list some commonly used lamps values that you can use as a guide for defining photometric lights.
The information in the tables is approximate; however, you can refer to manufacturer’s documentation for more precise photometric data for these lamps.
General-Purpose Lamps
Note: In the tables below, “Class.” stands for “Classification”; the values under “Intensity” are expressed in candelas.
| Class. |
Watts |
Type |
Intensity |
Beam |
Field |
| A-19/ Med |
60 |
Point |
70 |
|
|
| A-19/ Med |
75 |
Point |
95 |
|
|
| A-19/ Med |
100 |
Point |
139 |
|
|
M16 Low Voltage Lamps
| Class. |
Watts |
Type |
Intensity |
Beam |
Field |
| Narrow Beam |
20 |
Spot |
3300 |
6 |
12 |
| Narrow Beam |
50 |
Spot |
9150 |
12 |
25 |
| Medium Beam |
50 |
Spot |
3000 |
25 |
50 |
| Wide Beam |
20 |
Spot |
460 |
38 |
75 |
| Wide Beam |
50 |
Spot |
1500 |
38 |
75 |
Par36 Low Voltage Lamps
| Class. |
Watts |
Type |
Intensity |
Beam |
Field |
| Narrow Beam |
25 |
Spot |
4200 |
9 |
15 |
| Narrow Beam |
50 |
Spot |
8900 |
10 |
15 |
| Medium Beam |
50 |
Spot |
1300 |
30 |
60 |
| Wide Beam |
25 |
Spot |
250 |
36 |
75 |
| Wide Beam |
50 |
Spot |
600 |
39 |
75 |
Par56 Line Voltage Lamps
| Class. |
Watts |
Type |
Intensity |
Beam |
Field |
| Narrow Beam |
300 |
Spot |
68000 |
9 |
15 |
| Narrow Beam |
500 |
Spot |
95000 |
9 |
15 |
| Medium Beam |
300 |
Spot |
24000 |
18 |
36 |
| Medium Beam |
500 |
Spot |
47500 |
18 |
36 |
| Wide Beam |
300 |
Spot |
10000 |
30 |
60 |
| Wide Beam |
500 |
Spot |
18000 |
30 |
60 |
Par38 Line Voltage Lamps
| Class. |
Watts |
Type |
Intensity |
Beam |
Field |
| Narrow Beam |
45 |
Spot |
4700 |
14 |
28 |
| Narrow Beam |
75 |
Spot |
5200 |
12 |
25 |
| Narrow Beam |
150 |
Spot |
10500 |
14 |
28 |
| Medium Beam |
45 |
Spot |
1700 |
28 |
60 |
| Medium Beam |
75 |
Spot |
1860 |
30 |
60 |
| Medium Beam |
150 |
Spot |
4000 |
30 |
60 |
R40 Line Voltage Lamps
| Class. |
Watts |
Type |
Intensity |
Beam |
Field |
| Narrow Beam |
150 |
Spot |
5400 |
22 |
50 |
| Wide Beam |
150 |
Spot |
1040 |
76 |
130 |
| Wide Beam |
300 |
Spot |
1950 |
76 |
130 |
