Kodak 5212, 7212 Sensitometric Curves, MODULATION-TRANSFER Curves, Diffuse RMS Granularity Curves

SENSITOMETRIC CURVES ➤

"0" on the x-axis represents normal exposure of an 18-percent gray card in the red, green, and blue layers of this film. A white card is 2 1/3 stops higher than normal exposure, and there are at least 2 1/2 stops above that for capturing specular highlight detail.

A 3-percent black card is 2 2/3 stops below normal exposure. There are at least 2 1/2 stops of latitude below that for capturing shadow detail.

LOG EXPOSURE (lux-seconds)

-4	-3.2	-2	-1	-0.2
3.0
2.0
DENSITY 1.0
0.0		-6 -4 -2	0	2	4	6
-10 -8
		Camera Stops

RECIPROCITY

No filter corrections or exposure adjustments for exposure times from 1/1000 of a second to 1/10 second. In the 1-second range, increase exposure 2/3 stop and use a KODAK Color Compensating Filter CC 10R. In the

10 second range, increase exposure 1 stop and use a KODAK Color Compensating Filter CC 10R.

MODULATION-TRANSFER CURVES ➤

This graph shows a measure of the visual sharpness of this film. The x-axis, “Spatial Frequency,” refers to the number of sine waves per millimetre that can be resolved. The y-axis, “Response,” corresponds to film sharpness. The longer and flatter the line, the more sine waves per millimetre that can be resolved with a high degree of sharpness—and the sharper the film.

DIFFUSE RMS GRANULARITY CURVES ➤

To find the rms granularity value for a given density, find the density on the left vertical scale and follow horizontally to the sensitometric 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.

SPECTRAL-SENSITIVITY CURVES ➤

These curves depict the sensitivity of this film to the spectrum of light. They are useful for determining, modifying, and optimizing exposure for blue- and green-screen visual effects work.

SPECTRAL DYE-DENSITY CURVES ➤

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.

		IDENTIFICATION
		After processing, the Kodak internal
1000		product code symbol (EM), product code
(%)		numbers 5212 (35 mm) or 7212 (16 mm),
		emulsion and roll number identification,
RESPONSE	100
		and EASTMAN KEYKODE Numbers are
	10	visible along the length of the film.

										GRAIN
	1		10			100			1000
	1									The perception of graininess of any film
			SPATIAL FREQUENCY (cycles/mm)
										depends on scene content, complexity,
										color, and density. In KODAK VISION2
										100T Color Negative Film 5212 / 7212,
	3.0									the measured granularity is
										exceptionally low.
									D
	2.0							.10	GranularitySIGMA	SHARPNESS
	DENSITY
										depends on various components of the
								.03		The perceived sharpness of any film
	1.0							.01
								.004		motion picture production system.
								.003
								.002		Camera and projector lenses, film printers,
	0.0	0.0	1.0	2.0	3.0			.001
							4.0			and other factors play a role, but the
			LOG EXPOSURE (lux-seconds)
										specific sharpness of a film can be
										measured and charted in the Modulation
	4.0									Transfer Curve.
SENSITIVITY*	3.0
										Spectral Sensitivity Curve Key
	2.0									Sensitivity of the yellow dye
LOG
	1.0									forming layer
										Sensitivity of the magenta dye
	0.0									forming layer
	250	300	350 400	450 500	550	600 650		700	750	Sensitivity of the cyan dye
			WAVELENGTH (nm)
	*Sensitivity = reciprocal of exposure (erg/cm 2) required									forming layer
			to produce specified density
										Spectral Dye Density Curve Key
										Midscale Neutral

Cyan Dye

Magenta Dye

Yellow Dye

Minimum Density

Note: Sensitometric and Diffuse RMS Granularity curves are produced on different equipment.

A slight variation in curve shape may be noticed.