Pixels and Resolution

[BASSMASTER]

I need someone to explain this to me, I've been doing a lot of research but I'm still confused.

If I understand this, when you take a picture witha digital camera, no matter what resolution setting you have it set at, it packs the same amt of pixels into the image.

But why if I take a picture at 600x800 can't I increase the size of the picture without losing image quality? If the same amt of pixels are in that 600x800 as would be in an 2160x1440?

I don't get it, you can scale down a large resolution picture and not lose quality, if you have a camera with sufficcient pixels, why can't you scale up?


Thanks for the clarification.



edit: Whoops, wrong forum, sorry. Please respond anyways

 

[tajahem]

You got some bogus information from somewhere. Resolution is measured in pixels. In other words, an 800x600 resolution is 800 pixels wide and 600 tall. So there is a significant difference in the number of pixels in a 2160x1440 (3,110,400 or 3.1 megapixel) image than in an 800x600 (480,000 or .5 megapixel) image.

 

[BASSMASTER]

that's why I was so confused. Thanks for straightening it out for me

 

[techy]

2160x1440 = 3110400
800x600 = 480000

3110400 / 480000 = 6

so it is 6 time's acurate.