SETTING
UP DIGITAL FILES pg1
pg2
Page
Size
Documents should be proportional to the final print, but it
need not be at 100% of the final enlargement. For instance:
| Final
Print size |
Document
Size (image area) |
| 30"x40" |
10"x13.33",
15"x20" |
| 48"x96" |
12"x24",
8"x16" |
If
your image contains a scan, the document size should not be
smaller than approximately 16" by 20". The document
should be created 1" bigger width and height with tics within
the document to ensure the most accurate cropping when printed.
It should also have at least 1/4" bleed all around.
Vector
Color
Vector colors should be specified with Pantone numbers (PMS
Coated) and must follow proper naming protocol for our color
management to work. This is true for all imported vector files
(Illustrator, Freehand, etc.) as well. The CMYK/RGB values
should not be altered in these PMS colors or unwanted colors
will result. Provide an example of the color to match; see
charges for vector color matching.
Raster
color
Photoshop files or other raster images may have been set up
for a specific output, and may produce altered color in our
outputs. Provide us with a color match print if provided scans
need to match another output. If your color images need specific
colors and have been photocomposed, please provide us these
images in their original "layered" format. See charges for
raster color matching.
Color
Matching
Our images are created by photographic emulsions. The "color
space" we use is entirely different from Pantone tints, as
are 4-color process, or silk screen printing. Therefore we
can approximate your colors to the best of our abilities,
however, be aware that it may not be possible to obtain an
exact match. To obtain information on our color palette, consult
your GBP customer service rep.
Metallics
and Fluorescents
Metallics and fluorescent "colors" rely on reflective or chemical
qualities. These "qualities" while optical, cannot be duplicated
photographically. For example: Copper out of the PMS book
would look similar to PMS 4635 on color photographic paper.
Provided
Scans (color)
You may provide us with the scans to be used in your output,
however, we cannot guarantee that you will be delivered the
same quality as we can when we scan the images for you. If
you do choose to provide the scans, please note the following
Size
of the Scans/Images
There are 4 factors that influence the size of a raster image;
the image dimensions, the color space, the type of file used,
and the resolution.
Image dimensions are the height and width of the image
in measurement units.
Resolution is the number of pixels per unit measurement
(DPI, PPI, PPM, etc.)
Color Space and the Type of File is how the image is
expressed digitally ie: RGB or CMYK, TIFF, EPS, or SCITEX
CT. For instance, an RGB TIFF image of 8"x10" at 300DPI will
be 2400 pixels wide by 3000 high, or roughly 21.6 megabytes.
The same image at 4"x5" at 600 DPI is exactly the same resolution.
The size of the scan used depends on the size of the image
on your display, the size of the display, the capabilities
of your system, the use of the scans in other outputs, and
other factors. We recommend you contact a customer service
representative for more information. If you are producing
a large display, you will need a large scan (ie: larger than
80MB).
Unsharp
Masking
If your images have been used in a 4-color printing process,
they may have been excessively unsharp-masked. This image
processing effect works well to sharpen images in 4-color
process printing, but usually produces an undesirable effect
in our high resolution output. The images appear "haloed"
particularly around areas of high contrast "edges" causing
unrealistic looking images.
Spotting
Most images, whether when scanned, during processing, or handling
after processing have small imperfections caused by dust,
surface abrasions or drum mounting methods. In order to ensure
quality, our scans will all be spotted (the imperfections
will be removed) prior to use in any output method. Make sure
that all provided scans are spotted prior to being used in
our outputs.
|