Brochure

thirty nine
CONVERSION
+400
+350
+300
+250
+200
+150
+100
+50
0
0
-50
-100
-150
-200
-250
-300
-350
-400
10000
9000
8000
7000
6000
5000
4000
3500
3000
2500
2000
2000
2500
3000
3500
4000
5000
6000
7000
8000
9000
10000
MIRED SHIFT
MIRED SHIFT
Clear Blue Sky
Daylight
Electronic
Flash
HMI
CID
-5700k
Cool White/Daylight
Carbon Arc
White - 4300K
CSI
Warm White
- 3600K
Tungsten
Photoflood
Tungsten Lamp
Tungsten Lamp
at 80%
Tungsten Lamp
65%
Tungsten Lamp
50%
Household
Lamp
High Pressure
Sodium
Candle
Candle
High Pressure
Sodium
Tungsten
Lamp
at 50%
Tungsten Lamp
at 65%
Household
Lamp
Tungsten Lamp
at 80%
Tungsten Lamp
Tungsten Film
Tungsten Photoflood
Warm White - 3600K
White - 4300K
CSI
Carbon Arc
Cool White /
Daylight - 5700K
Electronic
Flash
CID
HMI
Daylight
Clear Blue Sky
_
+
Converted Source
Original Source
Daylight
Film
+318 Twice
full C.T.O.
(204 + 204)
+268 One and
a half C.T.O.(204 + 205)
+159 Full C.T.O.(204)
Full C.T.O.+
.
3ND(207)
Full C.T.O.+6ND(208)
+124 Three Quarters
C.T.O.(285)
+109 Half C.T.O.(205)
+64 Quarter C.T.O.(206)
+26 Eighth C.T.O.(228)
- 18 Eighth C.T.B.(218)
- 35 Quarter C.T.B.(203)
- 78 Half C.T.B.(202)
- 112 Three Quarters
C.T.B.(281)
- 137 Full C.T.B.(201)
- 215 One and a half
C.T.B.(201 +202)
- 274 Double C.T.B.(200)
+131(85B/85BN3/
85BN6/85BN9)
+112(85/85N3/
85N6/85N9)
+81(85C)
+53
(81EF/81EFN3/
81EFN6/81EFN9)
+42 (81D)
+35(81C)
+27(81B)
+18(81A)
+9(81)
-10 (82)
-21(82A)
-32(82B)
-45(82C)
-56(80D)
-81(80C)
-112(80B)
-131(80A)
(14) + 234
(13) + 219
(12) + 204
(11) + 188
(10) + 173
(9) + 159
(8) + 144
(7) + 129
(6) + 113
(5) + 99
(4) + 83
(3) + 69
(2) + 54
(1) + 39
(FL5700-B) + 137
(FL4300-B) + 80
(FL3600-B) + 35
(FL5700-D) + 6
(FL4300-D) - 51
(FL3600-D) - 96
(236)HMI to tungsten +134
(237) CID to tungsten +131
(212) (Y1)
L.C.T. to Yellow +62
(238) CSI to tungsten +49
3600 Kelvin -34
4300 Kelvin -79
5700 Kelvin -137
Daylight Conversion Tungsten Light Conversion Coral Tungsten to Fluorescent Conversion
How to use
Simply draw a line from the
Colour temperature value of your
original light source, to that of
the converted source. Where
the line crosses the central
band, read off the Mired Shift
value. For your convenience we
have added the range of Lee
Light Conversion Filters at their
appropriate positions in relation
to the Mired Shift Scale.
Example
To convert an original source of
6500K to 3200K. The line has
been drawn as an example. You
will note that it crosses the central
band at just over +150 Mired
Shift. This indicates that the
Filter required is 204 Full CTO
(also available with two degrees
of Neutral Density).
KelvinKelvin
+160 Full
C.T. Straw
(441)
+81 Half
C.T. Straw
(442)
+42 Quarter
C.T. Straw
(443)
+20 Eighth
C.T. Straw
(444)
C. T. Straws Fluorescent Light ConversionArc Correction Colour Temperature Adjustment inc Neutral Density
MIRED SHIFT CALCULATION
To calculate the Mired (Micro Reciprocal Degree)
Shift value for any conversion, carry out the following
simple calculation.
1000000 1000000
T2 T1
T1 is the colour temperature of the original light
source in degrees Kelvin.
T2 is the colour temperature of the required source.
= Mired Shift Value
(243) Lee Fluorescent
(242) Lee Fluorescent
(241) Lee Fluorescent