How Many MegaPixels is a VGA Camera
While high end camera have gone upto and more than 10 MegaPixels there are still many VGA Digital cameras in the market, specially the ones with Mobile phones. If you ever asked the dealer hom many MegaPixels is the VGA camera and ‘VGA cameras are a Class apart’, ‘They are not termed in MegaPixel…’ or similar to one of this reason is being conveyed to you then the dealer is misleading you either because of ignorance or for intention.
The largest image size supported by VGA camera is 640 x 480
640 x 480 = 307200
Divide it by 1000000 (or 1048576 for purists) and round off appropriately to get the value in MegaPixels
307200 / 1000000 = 0.3072 or 0.3 (rounded)
So a VGA Camera is in fact a 0.3 MegaPixels Camera.
Similarly, for a camera with largest image supported as 1280 x 1024, the calculation would be as :
1280 x 1024 = 1310720
1310720 / 1000000 = 1.3 MegaPixel (rounded)
@xeonblade
I did mention there “Divide it by 1000000 (or 1048576 for purists)” but manufacturers prefer to calculate it to show higher number that’s why I stressed on 1000000… The 10mp and 12 mp cameras are not actually 10 & 12mp if you go by purist approach.
jalaj
January 18, 2009 at 3:32 am
actually its x*y/ 1024*1024 >>>> X*Y / 1048576
XeonBlade
January 17, 2009 at 8:31 pm
[...] How Many MegaPixels is a VGA Camera [...]
Windows Live Writer, Error during Install? « Jalaj P. Jha
December 11, 2008 at 12:37 am
[...] How Many MegaPixels is a VGA Camera [...]
TheFunPics.com - Funniest of Invisible Pics « Jalaj P. Jha
December 11, 2008 at 12:23 am
Im just confused: one product is 0.3mp (vga) and the other one is 1.3mp. What is more clear between the two or what’s their difference?
Arl
October 10, 2008 at 8:24 am
good n clear explaination abt resolutions to define megapixels .. i also want to knw d full form of vga camera .
jatin
October 10, 2008 at 8:11 am
@paulette
Is it true that canon quoting 3 megapixel is different than kodak’s?
I always knew that x*y/1000000 gives the camera mp size and the higher size of the image only helps if someone is very interested in taking bigger prints.
Tech Blog
October 6, 2008 at 7:00 pm
Sometimes it depends on the brand and not the pixels.
paulette
September 7, 2008 at 12:52 pm
[...] How Many MegaPixels is a VGA Camera [...]
Takethosepictures.com - Revelations « Jalaj
May 1, 2008 at 1:11 am
[...] How Many MegaPixels is a VGA Camera [...]
Downloading Windows Update Agent 5.8.02469 « Jalaj
March 3, 2008 at 12:43 pm
Tis true. Generally, megapixels are like PageRank or Alexa Rank … ie virtually meaningless. My current camera has 13 of them, my last had 6. It’s not twice the sharpness or twice the resolution ( actually, when you multiply the X and Y counts, you get the total, but to actually double resolution you need to double the sample count on both axis, yielding 4x the number of pixels ). More importantly, because of better sensor technology, I can crop out a 6 million pixel region from the 5D and it will have measurably more detail than the same area from my old D60.
With that said, 640×480 pixels isn’t large enough to make a small print. Moreover, anybody who’s going to cut corners to this extreme and deceive their customers about it shouldn’t be trusted to make sure the other elements of a good camera system are in place … like the optics, for example.
Forrest
January 3, 2008 at 6:09 pm