Information Technology Reference
In-Depth Information
Screen captures are always grabbed at a resolution of 72 dpi on MAC and 96
dpi on WINDOWS computers.
On the Mac, you press
shift + apple + three
and you get a camera shutter
click. The captured file is placed on the root directory of your hard drive and
is saved as a PCT file that can be opened in Adobe Photoshop or Macromedia
Fireworks.
On a Windows computer, use the Print screen key (PrtScrn) and the desktop
is captured to the clipboard. When you create a new file in Adobe Photoshop
or Macromedia Fireworks the default page size is the same as the captured
document. This size will be equal to your screen resolution setting. You want
to capture at a high screen resolution so that the detail is clear when you scale
and crop the desired image portion. To do this, set your monitor resolution to
a high resolution, 1024 x 768 or above before doing the screen capture.
Once you perform a screen capture, you should crop out any unwanted areas
of the desktop that were grabbed. Then, the image should be saved or exported
as a GIF or JPG. We look at this task later on in this chapter.
Image Preparation,
Crop, Scale and Save
Getting your images ready takes time. It is a process requiring acute detail, but
it must be done. Image editing software makes preparing images relatively easy.
There are several things that you should be aware of when preparing your
images:
1.
Set the resolution to 72 dpi
To set the resolution of a bitmap graphic in Adobe Photoshop:
With the file open in Photoshop, go to
Image>Image Size.
Set the
resolution to 72 DPI then set the pixel height and width sizes. Be sure to
keep
Constrain proportions
are checked on to keep the aspect ratio of
your graphic true.
To set the image size in Macromedia Fireworks, go to
Modify>Canvas>Image Size.
