Formats such as BMP or TIF files do not compress the image. Here we use the word 'compression.' An uncompressed image is saved in a file format that doesn't compress the pixels in the image at all. In addition to image size, the quality of the image can also be manipulated. You reduce the file size by compressing the image (see the next question). You can also reduce the size of the file (not necessarily the size of the image) so it loads faster. Maybe 200-300 pixels high would be a nice size. If you are going to put your image on a webpage or email it to a friend then you will want to first make it a useful size. Add to that the fact that the computer monitor has a finite number of pixels per inch available (like 72) so if you are going to display your image on a monitor only, you would want to drop the quality down to 72 to save file space. To see the spider above at this resolution, click one the spider image above. If you open up an image that is 2048 x 1536 (3.1 megapixels) then you will find yourself moving the slider bar around to see all the different parts of the image. Now, if your monitor is set to 800 x 600 and you open up an image that is 640 x 480, it will only fill up a part of your screen. You can change the settings but these are optimum for those screen sizes. If you have a 19' screen it is likely set at 1024 x 768. If you have a 17' monitor, likely you have it set at 800 x 600 pixels. The larger the screen, the larger you likely have your screen resolution set. The computer screen you are looking at right now is set at a particular resolution as well. How does image resolution play out on my computer monitor? This means that a 5 megapixel camera is capable of capturing a larger image than a 3 megapixel camera. As the megapixels in the pickup device in your camera increase so does the possible maximum size image you can produce.

You could call it a 2048 x 1536 or a 3.1 Megapixel image.

For example, an image that is 2048 pixels wide and 1536 pixels high (2048 x 1536) contains (multiply) 3,145,728 pixels (or 3.1 Megapixels). Resolution is sometimes identified by the width and height of the image as well as the total number of pixels in the image. Resolution refers to the number of pixels in an image.

Web image resolution 72 or 96