Paul C. Buff Einstein E640 - Performance Modes and EU Numbers; Constant Color Mode Details; Action Mode Details; EU Numbers Explained

Toll Free 1-800-443-5542 HERE TO HELP
[
13
]
CONSTANT COLOR Mode: In this mode, the emitted color temperature is held constant at 5600º K,
plus or minus 50º K at any power setting or input voltage. At full power, the t.5 ash duration is
1/1600 second and the t.1 time is 1/568 second. As power is reduced to 1/2 power the color
remains constant, while the ash duration decreases to 1/1351 second t.1 (note that with IGBT
control, the t.5 spec is no longer meaningful, so only the t.1 ash duration appears on the rear
LCD display). As power is further decreased, the color temperature remains constant and the
t.1 ash duration falls ultimately to 1/8000 second at the lowest power settings.
f-stop Flash Duration (sec.) Color Temp. (ºK)
Full
1/568 5600º K
-0.5f
1/1220 5650º K
-1f
1/2041 5750º K
-2f
1/4464 5950º K
-3f
1/6050 6150º K
-4f
1/10417 6350º K
-5f
1/11050 6450º K
-6f
1/11765 6450º K
-7f
1/12579 6400º K
-8f
1/13514 6400º K
ACTION MODE:
CONSTANT COLOR MODE:
EU Numbers: When lights with different wattsecond ratings are mixed in a studio, terms like
“1/4 power” or “-3f” don’t tell the user how much light one unit outputs compared to another.
In order to allow a direct comparison between lights of different ratings, several European
manufacturers have instituted a numbering system that directly compares lights in 1/10f
increments without requiring calculations or wattsecond math conversions. The EU Number
denes a 6400 Ws power level as EU10.0, and each 1/10 f-stop change is represented by a
one digit change in the decimal. Thus, EU9.9 is 1/10f less power than EU10.0. A full f-stop
change is a one digit change before the decimal point. If your main light is EU6.4 and your ll
is EU5.3, you quickly know your ll light is 1.1f less powerful than your main light.
f-stop Flash Duration (sec.) Color Temp. (ºK)
Full
1/568
5600º K
+ / - 50º K
-0.5f
1/926
-1f
1/1351
-2f
1/2174
-3f
1/3226
-4f
1/4098
-5f
1/5000
-6f
1/5814
-7f
1/6579
-8f
1/8000
EU9.0
3200 Ws
EU6.0
400 Ws
EU3.0
50 Ws
EU0.0
6.25 Ws
EU8.0
1600 Ws
EU5.0
200 Ws
EU2.0
25 Ws
EU-1.0
3.13 Ws
EU7.0
800 Ws
EU4.0
100 Ws
EU1.0
12.5 Ws
EU-2.0
1.56 Ws