what is the difference between image resolution and megapixels?

Question

my phone has got a camera of 2 megapixels. but in camera options, you can choose the picture resolution, given four options...

Answer 1

Megapixels tells you the total number of pixels the phone camera sensor can use.

For your phone's camera, 2 MP means that the maximum resolution the phone can use is 2MP.

Image resolution on the other hand tells or asks you how many pixels do you want the sensor to use. The four options can be given in either MP format, descriptive format (Best, Better, Good), or in resolution size (640 by 480, 1080 by 640, etc).

The phone asks you to choose the resolution because it wants you to decide if you are going to use all the pixels available thus a larger file size for the picture or use less pixels to save up space.

In addition, image resolutions gives you an idea how will a picture look like if you print it. If you select a good quality for image resolution in a 2 MP camera, you can only use it for small prints (neoprints or 2 by 2 pictures) because if you print in a 5 by 8, you will see dots or grains.

Answer 2

No. you need to pay better interest to the dynamic decision and espresso-mild sensitivity of the sensor. promotion human beings ought to like you to imagine that the form of megapixels distinguishes a digicam. that is fantastically a lot a hoax. In fantastically a lot all situations, a 6 megapixel photo from a digital SLR will be a strategies better functional than a fifteen megapixel photo from a level-and-shoot. besides, to easily proper yet another established delusion that different posters have reiterated, the scale of the upward push isn't restricted by using megapixels. that's real that a ratio of one pixel to at least one print droplet will be position an upward reduce on print length. in spite of the indisputable fact that, this isn't the governing element at the same time as dealing with maximum print sizes. the reason being that enormous prints are seen from large distances. at the same time as seen from 3 meters, your eye gained't word that one pixel in the unique photo became blown as a lot as 4 or maybe 9 print droplets. The resolving skill of the human eye is nicely-exceeded by using 6 megapixel determination. favor info? walk as a lot as a billboard it gradual and seem at it % up. The determination will be horrendous.

Answer 3

"magapixel" is a term used to specify the resolution. it means 1 million pixels. 2 MP = 2 million pixels and so on. to find out how many megapixels an image contains, multiply the width times the hight. for instance 1632X1232 is 2,010,624 pixels or, 2 megapixels.

Answer 4

Megapixels refers to the max number of pixels the camera sensor has.

To save camera memory space, the camera allows you to scale down the captured image; that's why it gives you different storage options.

Answer 5

the more pixels
the better the resolution