most cameras take pics not by the file size of the camera but by megapixels. a noisy camera will take an 8 mb pic where a not noisy one will take the same size and quality of pic at 5 mb instead.

a noisy pic has more data, plain and simple. 10,000 little dots is a lot of extra data - just like a pic of a guy sitting in hay is always a lot larger with everything else equal than a guy posed against a plain colored backdrop. a pic of a lawn is bigger than the same size and quality pic of a blue sky. and a pic full of dots is bigger than a pic without dots.

Quote Originally Posted by Lee View Post
Im not really sure that im following your train of thought on this.

If a camera takes a picture that is 8mb in size, whether there is 'noise' on the image or not, its still only going to be 8mb in size isnt it?

As i said, not sure if thats what you mean but right now im not understanding how an image that has 'noise' on it differs than an image that is noise free if the end result is a filesize thats 8mb.

Regards,

Lee