If
you are new to digital photography or scanning -
then this article is for you. This will show you the
basics of all you need to know in order to get
started. The author prefers that you use a scanning
service if you have a lot of photos to scan - and
when it also comes to scanning slides to photos.
Digital Photo
A digital photo is made up of millions of
pixels. Pixels are essentially the "atom" or
building block of a picture. Pixels are actually
picture elements and have tiny sections that consist
of color or tone. They are usually depicted on a two
dimensional graph and are usually represented by the
use of squares. Every pixel consists of three
values: red, green, blue, or RGB. RGB is information
used to select the color of each pixel. A
goodexample of RGB is a 24 bit color image. These
RGB values are made of 8 bits for green, red,and
blue. To show the range of these bits, 256 color
options exsist from 0 to 256 scale. Next,the grid,
in which all of the pixels are contained,is yet
another important element. The grid is really the
housing for the "atom" or pixel.
Scanners and Resoultion
Scanners operate by reading color information
from the photo selected and record the information
in a pixel format. This is how resolution is created
because the information is gathered by the scanner.
In definition resoulution is really the final
product of the picture. The scanner and resolution
work together in creating a good picture quality
making the images clear.
Megapixels
What in the world are megapixels? Well it simply
means one million pixels or it is also seen in the
abbreviation MP. If you look at the information
contained on a digital camera you would find that
they are rated by megapixels. To find the number of
megapixels get a photo and just do the simple math
equation length times width (in pixels) and there
you have it.
High Resolution
An amateur might guess that a higher resolution
is the best choice, however that is not always the
case. It really depends on what type of picture is
being scanned. A lot of photos were taken with today
what we call obsolete equipment. Now take that photo
with a high tech piece of equipment and you are
creating more detail than the photo originally had.
This is one example why high resolution is not
always the best way to go.
Finally, what kind of resolution would fit best with
my photo? Well it really depends what application
you are going to lay on that photo. Some people
would like to send these photos through their email
or make CD-ROMs and others would actually like to
print the photo out on a sheet. The resolution will
be different for both of these people, so keep that
in mind when you are deciding what resolution you
want
About the Author
Mark
Shrigley is a SEO specialist that works for an U.K.
based company named
Memobase.
