what is mega pixel? how does it differ from vga camera?

Question

what is mega pixel? how does it differ from vga camera?

Answer 1

A pixel is a dot of light and a megapixel is one million of these dots.



VGA is a resolution that means 640 pixels across and 480 pixels tall, resulting in an image that's 1/3 of a megapixel. So, a 1MP picture has three times as many dots making up the image. If the two pictures were of the same image, the 1MP version would usually have better detail.

Answer 2

If you always plan to compose your pictures perfectly, you don't need a whole lot of pixels. These days, I'd say that 5 MP or even 4 MP is fine for the average snapshooter and this can be obtained without unreasonable expense. If you want to allow for cropping, which means enlarging only a portion of your image, the more pixels the better.



Imagine taking a scenic view and then noticing that the middle 20% of the photo would make an even better picture. Suppose you take a picture of a whole group of people and Aunt Clara really, really looks great in the picture, but everyone else looks lousy. If you have the pixels to work with, you can still make a decent print of Aunt Clara that she would be happy to have. If you buy an 8-to-10 MP camera and don't want to TAKE large photos, you can always set the camera to a lower file size. You can never go the other direction, though.



Unless the cost is a major issue, buy the camera with more pixels. You will never be sorry that you did, but you might one day be sorry that you didn't.



I have a few photos on Flickr to include in a discussion on how many pixels are enough. Go to my page at http://www.flickr.com/photos/samfeinstein/ Near the top, click on "tags." In the "Jump to" box, enter the word "Pixels" and then press the "GO" button. Some of the pictures are from a 4 MP or even 3 MP camera, showing you what you might expect without any cropping. I think they are quite acceptable. Some of the pictures are from a 10 MP camera (the swan and the pansies), showing the value of having those large images so that you can crop a smaller image out of the original picture and still end up with a satisfactory image. There is one VGA picture, just to show what you could expect from 640 x 480 pixels - not much.



Having said all that, though, pixels are not the only measure of image quality. The sensor size is important as well as the image processing softare included in the camera. (See http://www.flickr.com/photos/7189769@N04/476181751/

You need to read reviews if you want a critical understanding of image quality for particular cameras. Try http://www.dpreview.com/reviews/ for more information on the cameras you are considering.



You can go there and click on "Buying Guide" and then "Features Search" to specify how many pixels you want to look at.



You can also go to http://www.steves-digicams.com/default.htm and click on "Our reviews," where you will find catagories of cameras arranged by pixel count.

Answer 3

Pixels and megapixels

Digital cameras capture images as pixel elements, known as pixels. Simply put, a megapixel is equal to one million pixels.



Digital images are made up of thousands of these tiny, tile-like picture elements. The more pixels, the higher the image resolution. Resolution relates primarily to print size and the amount of detail an image has when viewed on a computer monitor at 100%.



The number of megapixels is only one aspect relating to the quality of a camera, or the actual quality of a photo it is capable of producing. Factors such as camera sensor and the optical quality of a lens play equally important roles.



If you buy a digital camera with too few megapixels for your printing and editing needs, your photos will be degraded. Purchase a camera with too many megapixels and it could cost more than is necessary.



Deciding the "right" number of megapixels does not have to be confusing. Two main factors should be at the core of a decision when purchasing a digital camera: desired features and the number of megapixels based on the maximum print size you plan to make.





a picture is composed of a collection of dots called pixels. pixels determine the size of the picture, and the more pixels a camera can generate, the bigger the picture will be. the k700 has a VGA camera, it stands for 0.3 megapixels, or million pixels. it is derived by multiplying the maximum height and width of the picture (640x480 = 307,200 pixels, or 0.3 mega pixels).

Answer 4

Mega pixels are a simple count of how many little points of color and intensity data are in a picture; That is, how many dots make up the picture? VGA is a particular sampling and processing method used to capture and store that data. All digital images can be measured as a particular size (or resolution) in mega pixels. Not all image files are created by a vga process.

Answer 5

A photo taken with VGA is worthless. You NEED a megapixel for a good pic. Atleast 4 Megapixel.

Answer 6

look VGA no not same like megapixel VGA pictures you cannot take pictures like 1280X1024 with VGA you can take 680x340

with mega you can take biger resolution like 1280x1024 or bigger like 1600x1280 this is the difference between VGA and MEGAPIXLE