Images are getting resized in Print Preview

[DiopJeori]

I have several images(not background images) on my webpage, When I see the Print Preview at 100% scale, images looks fine, but My problem is that when I do a print prview with Shrink to fit scale, all the images are coming smaller than the actual size. I have not supplied any width or height attribute on IMG tag so I assume that in print preview it will load as they appear on screen. I have used below css for print media for IMG but it did not work\[code\]img {max-width:100%; }\[/code\]I am expecting the same image dimension in Shrink to fit and 100% scale. Is this possible? am I missing something in print css? Please advice.