Photo printing environments where
digitalization is already forging ahead
Even if issues of resolution, dynamic range,
and color management are successfully
addressed, prints are still ultimately necessary.
We turn to prints, not displays or offset
printing, when we want to preserve an
image. Prints, of course, can be kept for a
long time. This quality, as well as the strong
demand for depth and density of color and
light that only photographic paper can
provide, have been traditional reasons for
the hesitation to switch to digital photography.
In the past, creating prints from digital data
was cumbersome and time consuming.
First, digital data were burned onto color
reversal film using a film recorder, and then
a print was created with the color reversal
film. Now, however, photo-printing equipment
has itself been upgraded to digital technology,
and prints can be created directly from
image data.
Digital printing equipment in
high-precision professional labs
surpass negative prints
As digital cameras have come into wider
use, professional labs have upgraded their
digital data handling capabilities. The growing
use of large format photo printers has been
of particular value in providing a greater
range of choice for printing digital photos.
The Lambda printer, (a commonly used
large format printer) exposes conventional
photographic paper to RGB lasers and
produces colors through a development
process. The result is prints of exactly the
same quality and texture previously possible
only by using photographic paper in the
traditional printing process. What’s more,
with Adobe RGB serving as the color
spectrum standard, color expression more
vibrant than that possible with traditional
printing can be achieved. There are also
Lambda printers that use LED technology.
This technology permits enlargements
to be sharper than those created using
traditional optical methods.
Photo studios consider adopting
digital technology for portraits
The rapid transition to digital technology in
professional photo labs has encouraged
some photo studios, which until now have
used digital cameras only for ID photos, to
adopt digital large-format prints. Some of
these studios have made a complete
switch to digital technology and are now
using digital cameras for portraits too.
Broadly speaking, there are presently two
separate workflows in digital photography.
In one, image data are given to a professional
lab, which then handles everything from
correction to printing. Advances in
broadband technology have encouraged an
increasing number of labs to upgrade their
computing environments, so they can be
sent image data over the internet. The ability
to easily transfer large volumes of highquality image data makes the simplicity of
sending and receiving orders an advantage
for this workflow. In the other workflow, the
photographer personally corrects the image
data and has a professional lab use these
data to create prints. The lab and the
photographer examine test prints beforehand
and, working together in the color
management process, create prints that
satisfy the photographer. In either case, if
care is taken to use the same settings on
tools used by both the photographer and
the lab from the beginning, prints even
more stable than those possible with film
can be obtained. Active communication
with the lab, therefore, is the key to efficiency
and high quality.
With advances in printing technology, we
are seeing the emergence of a creative
environment in which the capability of the
operator and the senses of the photographer
are indispensable. It appears that once
there is solid order-sending and receiving
know-how among photographers and
professional labs, we will see digital cameras
used more and more for portraits, as well as
other types of photographic projects.
Impact of inkjet printer performance
improvements
Previously, inkjet printers produced images
markedly different from those printed on
photographic paper. Performance
improvements in recent years, however,
have produced marvelous granularity that
exceeds that of traditional photo printing,
and have given us spectrums that have
been expanded with 8-ink systems and
other technologies. This has resulted in
color reproduction that surpasses that of
positive film.
Additionally, improvements in waterresistance, weather-resistance, and light
stability, as well as improvements in inks
and printing paper, have made it possible
to obtain extremely stable print results.
EOS DIGITAL • DIGITAL PHOTO GUIDEBOOK
21
Introduction
20
Strict color management is a must! P.50
Digital photo processing requires strict
color management since there is no
central standard for color evaluation.
Photo printing environments rapidly adopting digital technology
• Photo studio/professional lab workflow
could result in flawed image evaluations
and unintended print results.
The simplest method of color management
is to use the same image processing
software, such as Adobe Photoshop, and
apply the same color management settings
throughout all processes within the workflow.
However, this rudimentary method is not
sufficient for realizing the full potential of
digital camera data.
Too often, photographers are drawn to
digital cameras for the ease with which data
can be transferred to designers, clients, and
plate makers, and a workflow is established
without taking proper color management
into account. We highly recommend that
you avoid this pitfall through appropriate
color management protocols.
P.50
The importance of color
management
Photographers must adhere to strict color
management principles in order to ensure
that accurate, consistent color quality is
maintained throughout the entire workflow
process for a variety of image endpoints,
including: print, world wide web, CD/DVD
authoring, across networks, storage media
and multiple monitors.
A common practice today is to supply a
print along with the image data for the plate
maker to use as a guide. With the introduction
of virtual proofing and modern color-managed
workflow, this practice will no longer be
necessary. Color management has now come
of age! With proper understanding and
practice, the photographer can exercise
complete control over viewing, editing, and
proofing, as well as final print quality. To do
this, you must utilize the proofing and color
gamut functions of commercially available
image editing software such as Adobe
Photoshop.
Inkjet printers can reproduce a wider
range of colors than commercial printing
equipment, so the key to image quality is
how the plate maker adjusts for areas that
cannot be adequately expressed by
commercial printing equipment.
When you want to see how colors will
differ in commercially printed images, you
can use Adobe Photoshop or Canon Digital
Photo Professional to simulate the conversion
from RGB (red, green, blue color spectrum)
to CMYK (cyan, magenta, yellow, and black
color spectrum).
P.77
Photographers who understand the
process can improve efficiency and
final image quality
Color management is necessary at every
step of the process that leads to commercially
printed digital photos. However, the color
management responsibilities of each person
in the process is rarely defined.
This lack of clarity can burden photographers
who take full control in their efforts to
ensure quality and efficiency. Conversely,
photographers who leave too many
responsibilities
to others may end up with
low-quality results.
To prevent such problems and realize
the full potential of digital photography,
photographers must understand the entire
process so they can recognize the factors
that affect image quality. Then they should
take an active part in defining and delegating
the responsibilities for color management.