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12 KODAK PROFESSIONAL PORTRA 160NC, 160VC, 400NC, 400VC, 400UC, and 800 Films • E-190
KODAK PROFESSIONAL PORTRA 400VC Film
Characteristic Curves
Spectral-Sensitivity Curves
F009_0156AC
1.0 1.0
R
G
B
Status M
C-41
Process:
Densitometry:
0.02.0
4.0
3.0
2.0
1.0
DENSITY
3.0
0.0
4.0
LOG EXPOSURE (lux-seconds)
F009_0181AC
Layer
Forming
Cyan-
Layer
Forming
Magenta-
Layer
Forming
Yellow-
0.2 above D-min
Density:
C-41
Densitometry:
Effective Exposure:
Process:
1/50 second
Status M
4.0
3.0
2.0
1.0
*
0.0
LOG SENSITIVITY
2
WAVELENGTH (nm)
to produce specified density
*Sensitivity = reciprocal of exposure (ergs/cm ) required
250 300 350 400 450 500 550 600 650 750700
Spectral-Dye-Density Curves
Modulation Transfer Function
F009_0188AC
Minimum Density
Midscale Neutral
Process:
C-41
and D-min.
Typical densities for a midscale neutral subject
700
2.5
1.5
2.0
0.5
1.0
DIFFUSE SPECTRAL DENSITY
600
WAVELENGTH (nm)
400
0.0
500
Daylight
C-41
Exposure:
Process:
1001 2 3 4 5 10 20 50 200 600
SPATIAL FREQUENCY (cycles/mm)
RE
S
P
O
N
S
E (%)
10
1
2
5
3
7
30
20
100
70
50
200
R
G
B