VGA v/s megapixel

[pallavi agarwal]

hello....can anyone of u please tell me that--What is the difference between 640X480 VGA and 1 megapixel?

[niraj.kumar]

Megapixel matters when you want to take a large picture ... I mean picture of sunset or any lake .....

For the picture which is taken from short distance .... it doesnt matter most .... So if you are are photographer you should take a high mega pixel camera ..... and optical zoom matters most

[bayazidahmed]

Why dont you multiply 640 and 480. And how many pixels do you think there are in 1 Megapixel?

Start thinking at the root level and you'll be surprised at how simple the solutions are.

[ash]

I think the standard VGA can only simultaneously display 256 colours.

But in terms of resolution, then yea.. as ahmed said, the difference is the total number of pixels in the array.

[bayazidahmed]

VGA mode supports 16-bit colors as well.

[Mrunalini]

VGA stands for "Video Graphics Array".
VGA is 640x480.. or basically .5 MP.

So 1MP is always better that a VGA..

[ash]

Originally Posted by bayazidahmed

VGA mode supports 16-bit colors as well.

Oh, isnt it SVGA and XGA and onwards that could display the 16-bit colour palette?

[bayazidahmed]

The VGA supports both All Points Addressable graphics modes, and alphanumeric text modes. Standard graphics modes are
640×480 in 16 colors
640×350 in 16 colors
320×200 in 16 colors
320×200 in 256 colors (Mode 13h)
As well as the standard modes, VGA can be configured to emulate many of the modes of its predecessors (EGA, CGA, and MDA).

@Mrunalini: It comes to 0.3 MP. SVGA comes close to 0.5 MP

Source: Video Graphics Array - Wikipedia, the free encyclopedia

[ash]

So, its either 16 (4 bit) or 256 (8 bit) colours simultaneously right? a 16 bit palette, which you mentioned before, consists of 65,536 colours So slight confusion there.

[bayazidahmed]

Yup! I should have said 16 colors onl. The -bit part was extra.