Furitechnics E-2412B manual Storage And Handling, Darkroom Recommendations, Exposure

STORAGE AND HANDLING

Store unexposed material at 13°C (55°F) or lower in the original sealed package. High temperatures or high humidity may produce unwanted quality changes.

To avoid moisture condensation on material that has been refrigerated, allow it to completely warm up to room temperature before opening the package. For best results, remove the material from cold storage the day before printing, or use the warm-up times in the following table. For more storage information, see KODAK Publication No. E-30, Storage and Care of KODAK Photographic Materials — Before and After Processing.

Warm-Up Times (in Hours) to Reach

Room Temperature of 24 °C (75°F)

	From a Storage Temperature of
Size	-18°C	2°C	10°C
	(0°F)	(36°F)	(50°F)
Rolls 11 in. (27.9 cm)	12	9	6
or wider

These times are based on a single package, positioned to allow free air circulation. After you remove the material you need, re-wrap the package and reseal it with tape to restore the moisture barrier.

Handle these materials very carefully by the edges to avoid creases and fingerprints. The materials are extremely sensitive to light; store and transport them in lighttight boxes.

DARKROOM RECOMMENDATIONS

Do not use a safelight; handle unprocessed material in total darkness. Be sure that your darkroom is lighttight. Eliminate stray light from the enlarger head, repro camera lamps, timers, digital displays, etc.; even indicator lights and fluorescent tape can fog the material.

EXPOSURE

Expose the material from originals such as continuous-tone or printed matter, maps, drawings, layouts, or documents in a process or repro camera by using subtractive, tricolor-additive, or semi-additive methods. Although this material is balanced for exposure with a light source of 3000 to 3200 K, you can use any of the following light sources: pulsed xenon, incandescent, halogen, or flood lamps.

Using a Process (Repro) Camera

For a 1:1 ratio in a Klimsch Super M3 Repro Camera equipped with a halogen light source, use these trial-exposure conditions:

Trial Exposure Using a Process (Repro) Camera to Expose KODAK EKTACHROME RADIANCE III Clear Display Material

		Exposure Time
Printing Method	Filters	(in Seconds)
		for an Aperture
		Setting of f/22
Subtractive	CC10C + CC10M	6.0
Tricolor-additive	No. 29 Red	4.5
(with KODAK
	No. 61 Green	7.5
WRATTEN Gelatin
	No. 47B Blue	20.0
Filters)
Semi-additive (with	White Light	2.5
KODAK WRATTEN	No. 29 Red	2.0
Gelatin Filters)
	No. 61 Green	10

Because exposure times and filtration will differ with the equipment, the light source, the original, your process control, etc., use the tables only as a guide.

To maintain high image quality, control flare as much as possible. Flare consists of stray ambient light and scattered image light that might reach the material during exposure. Follow these procedures to control flare:

•Keep the lenses, mirrors, filters, and copyboard glass clean and free of scratches.

•Keep the interior of the camera clean.

•Use the additive or semi-additive printing method whenever possible to minimize the number of filters in the optical path.

•Adjust the copyboard lights and room lights so that neither the lights nor reflections from the copyboard glass fall on the camera lens.

•Mask the areas surrounding the original with black material.

2 KODAK EKTACHROME RADIANCE III Clear Display Material • E-2412B