Acer FotoPrisa 300P - Manual (Page 41)

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FotoPrisa
specific programs or equipments. Here we don’t recommend
these formats for FotoPrisa Printer.
4.3 Choose the appropriate image source for the file
to be printed
To get a perfect printout with FotoPrisa Printer, first, there are 3
points needed to really take care of for choosing an appropriate
image input:
Image size
Before we go into the topic, there are several important terms
to know in advance.
A digital image is composed of a minimum unit called pixel.
With the variation of pixel properties, you can create various
effects to the image. To measure the density of pixels (or
resolution) in an image, we use dpi (dots per inch) to see
how delicate the image will be to our eyes. If an image is
composed of more pixels, it has larger image size. If the image
has higher resolution, it will seem more delicate and details in
the image can be presented more clearly.
FotoPrisa Printer is a 4" x 6" photo printer at a resolution of 300
x 300dpi or 300 x 600 dpi. Actually the maximum print area (full
size) is about 4” x 5”, or 1200 pixels (=300dpi x 4”) x 1500
pixels (=300dpi x 5”). Therefore, in order to have a full-size,
true-color printout, it’s better to find out an original image of
which data size is bigger than the wanted maximum image size
(resolution x print area, that is, larger than 1250 pixels x 1500
pixels). Thus we can fully utilize the advantage of the 300dpi
resolution offered by the printer.
Of course, it's hard to always get an image bigger than what we
need to print. Indeed that will not be a big matter if we got a
somewhat smaller image size, the printout can be still vivid to
our eyesight via FotoPrisa Printer. However, if the image size
you choose is much smaller (under half of the wanted maximum
image), either you sacrifice the resolution to have a more blur
printout or you can only get a smaller size of printout without