Kodak 250D manual Diffuse rms Granularity Curves, Spectral Sensitivity Curves

Diffuse rms Granularity Curves

3.0
	Process: ECN-2
2.0				0.10
					D
				0.03	Granularity SIGMA
1.0
DENSITY				0.01
				0.004
				0.003
0.0				0.001
0.0	1.0	2.0	3.0	4.0

H15205TC LOG EXPOSURE (lux-seconds)

To find the rms Granularity value for a given density, find the density on the left vertical scale and follow horizontally to the characteristic curve and then go vertically (up or down) to the granularity curve. At that point, follow horizontally to the Granularity Sigma D scale on the right. Read the number and multiply by 1000 for the rms value.

Note: This curve represents granularity based on modified measuring techniques.3

Spectral Sensitivity Curves

	4.0	Effective exposure: 1/25 sec
		Process: ECN-2
		Densitometry: Status M
	3.0	D=0.2>D-min
*
SENSITIVITY						Yellow-
	2.0				Forming		Magenta-		Cyan-
						Layer
							Forming		Forming
LOG								Layer	Layer
	1.0
	0.0250		300	350	400	450	500	550	600	650	700	750

WAVELENGTH (nm)

*Sensitivity = reciprocal of exposure (erg/cm2 ) required

H15205TD to produce specified density

These curves depict the sensitivity of this film to the spectrum of light. They are useful for determining,

3.NOTE: Sensitometric and Diffuse RMS Granularity curves are produced on different equipment. A slight variation in curve shape may be noticed.

modifying, and optimizing exposure for blue- and green-screen special-effects work.

Spectral Dye Density Curves

	1.8	Typical densities for a midscale neutral subject
		and D-min.					Process: ECN-2
	1.4						D-mins subtracted
DENSITY
			Midscale Neutral
	1.0
SPECTRAL
	0.6
DIFFUSE
	0.2							Minimum Density
	-0.2
	300	350	400	450	500	550	600	650	700	750	800
H15205TE				WAVELENGTH (nm)

These curves depict the spectral absorptions of the dyes formed when the film is processed. They are useful for adjusting or optimizing any device that scans or prints the film.

Note: Cyan, Magenta, and Yellow Dye Curves are peak-normalized.

NOTICE: The sensitometric curves and data in this publication represent product tested under the conditions of exposure and processing specified. They are representative of production coatings, and therefore do not apply directly to a particular box or roll of photographic material. They do not represent standards or specifications that must be met by Eastman Kodak Company. The company reserves the right to change and improve product characteristics at any time.

4 KODAK VISION2 250D Color Negative Film 5205 / 7205 • H-1-5205t