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VARYING LIGHT SOURCES CAN
ALTER A COLOR’S APPEARANCE
A blue glass jar in daylight, under lamplight, and by
candlelight will produce different color perceptions.
A light source that emits most of its energy in
wavelengths of 570 nm (nanometers) can be
described as emitting mostly “yellow” light. A light
source that has a fl at spectral distribution (equal
energy emitted across the entire spectrum) will be
described as gray.
3. NEED FOR A RELIABLE MANAGEMENT SYSTEM
As explained in this White Paper, there are several
causes for color inaccuracies when processing digital
documents in graphic arts, design and photography.
In order to address these issues, we recommend that
you adhere to the following rules:
• Adapt your working environment to color
management requirements. The ISO 3664 Standard
recommends an ambient light that offers less than
64 lux luminance and has a neutral chroma. Use
neutral lighting; protect your desktop and display
from outside daylight infl uence; change your light
bulbs, turn off your offi ce lamps or reduce their
intensity; shade any windows; etc.
• Build a clearly defi ned color management strategy
and follow standard settings for your calibration
and profi ling: select white point, luminance and
gamma settings according to your needs.
• Rely on measurement tools such as
spectrophotometers and colorimeters rather than
on your eyes with products specifi cally designed
for color management, such as the LaCie blue eye
pro calibrator, integrated in a comprehensive color
management system.
• Calibrate every color sensitive peripheral (printer,
scanner, monitor). In a reliable workfl ow, a color
document must be reproducible by all different
peripherals of the graphic chain with predictable
and consistent results.
• Rely on monitors that can display accurate
colors and are specifi cally designed for color
management, particularly monitors that can be
hardware calibrated such as the LaCie 300 Series.
Future White Papers in this series will explore other aspects of
Color Management in further depth.
“Through a combination of cutting-edge technological
engineering and a rich history of unique design aesthetics,
LaCie continues as a fi rm leader in the color display industry.
Established in the United States, Europe and Japan, LaCie is a
leading worldwide producer of PC and Macintosh compatible
peripherals, including a new generation of color LCD monitors.
By providing top-of-the line tools for multimedia innovation,
LaCie anticipates the needs of creative professionals such as
graphic designers, photographers and fi lmmakers, who require
genuine, practical solutions for accurate color management.”
LaCie • 22985 NW Evergreen Parkway, Hillsboro, OR 97124 USA
LaCie • 17 rue Ampère 91349 Massy Cedex FRANCE
