What is available light? 15If shooting in one of the many
Scene modes available with digital
cameras these days, the latest
version of EXIF (2.2) makes sure
that when an image made under
different kinds of lighting condi-
tions is printed, such as this night
scene, it’s also printed correctly.
© 2005 Joe Farace.
Cr and Cb (Cr is chrominance red; Cb is chrominance blue),
with the green being handled by the luminance component. A
variation on this color space called LAB has been available in
Photoshop for some time, but sYCC is simply YCC created from
sRGB color space.
Why do you care? Previously, when sYCC images captured with
digital cameras were transferred to a computer, all of the monitor
colors outside the sRGB range would be discarded, or clipped.
Clipping is the loss of image information in a region of a pho-
tograph that is brighter than the imaging device can handle, or
that is outside the color gamut of the space used to represent the
photograph. EXIF 2.2 allows more-accurate image processing
because handling sYCC images using compatible applications
and printers means that virtually all of the original image
captured by the digital camera can be accurately printed. More
color represented more accurately is better, right? Right.
You’ll fi nd additional information about color space in
Chapter 4.Artifi cial light
Wait, isn’t the title of this book Available Light? Well, yes, but
not all available light is from the sun or other natural sources.
Available light is the light you have around you and the art is