This page contains a Flash digital edition of a book.
If you are sourcing or scanning photographs yourself, save them
as either EPS or TIFF fi les as this will preserve the colour and clarity of
your images. If you are scanning a previously printed item, such as a
magazine photo (obviously with permission from the copyright holder)
or an old brochure you will need to ‘de-screen’ the image, blurring it
slightly to avoid a moiré effect (see your scanning software manual for
more details).
GIF or JPEG formats compress the image and actually discard
information, causing colour shifts and blurriness. Don’t use either of
these fi le formats – they may even print in black and white and you
won’t like the results.
Consider the fi nal size your image will be used at.
Photographs should be 300-350dpi at the size
you are going to use them. There’s no point taking a
postage stamp at 300dpi and then blowing it up to
a A4 size – for scans use your scanning software to
help you calculate the output resolution. Conversely,
photographs at more than 300dpi will have little
or no effect on the actual printed quality and will
unnecessarily increase fi le size and processing time.
Photoshop CS3 screenshots
Don’t enlarge or reduce your images in your
drawing/vector software (such as Illustrator) – it’s
always best to use an image-editing application such
as Photoshop for this task.
When converting photographs from RGB to CMYK,
refer to the settings on the left (from Photoshop
11). In the ‘Edit’ menu in Photoshop, choose ‘colour
settings...’. From the window that appears, choose
‘custom CMYK’ from the list in the ‘CMYK’ section
of ‘working spaces’ (please note that there are
two screen shots illustrated, one each for coated
and uncoated stocks of paper). You may need to apply a medium or
maximum Black Generation setting, depending on the image. For more
advice on converting colours, please give us a call.
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