2. Resolution
• Bitmap images are made up of pixels. Image resolution is the number of
pixels per inch (PPI) in the bitmap grid the more the pixels the better
quality image is
• There are two features to every bitmap image – its size meaning the width
and height In inches and resolution meaning the number of pixels per
inch.
• Both of these factors both determine the total number of pixels in a
picture
3. resolution
• Some typical resolutions include:
• 256x256 – found in many cheap cameras, this resolution makes the camera picture
quality really bad almost unacceptable. This resolution holds 65,536 individual
pixels.
• 640x480 – this is found in low end cameras, but mainly this resolution is used for
sending pictures or posting pictures on a website. This is has 307,200 pixels or 0.3
mega pixels*
• 2240x1680 – this resolution is mainly found in 4 megapixel cameras (the current
standard) this allows even bigger printed photos, with good quality for prints up to
16x20 inches. This resolution holds over 3 million pixels.
• The top end cameras mainly use 4064x2704, this is a basic digital camera with 11.1
megapixels which takes a picture at this resolution, plus when you print a picture
you can create a 13.5x9 inch print with no picture quality.
• *megapixels – more than 1 million pixels
4. resolution
• The more the pixels there are within a picture, the more
detailed the image can be displayed at.
• But the fewer pixels there are in an image, the less
detailed the image will be displayed at.
• There are two ways to show an image mainly on screen
and print:
• The standard for screen displays is 72 PPI.
• The standard for Print is 300 PPI.
5. pixels
• In digital imaging, a pixel is the physical point In a raster
image. So it is the smallest element of picture represented on
the screen. The address of a pixel resembles to its physical
co-ordinates.
• The term pixel is in fact short for Picture Element. These small
little dots are what make up the images on digital. The screen
is separated up into a matrix of thousands or even millions of
pixels.
