Hi,
Same problem on a 15", 24" or 27" screen.
I wonder if it's not a problem of native size of the image.
The original sizes of my silver images are about 150 to 200 Mo and I just put it in 72dpi in Photoshop then after optimized it for the web.
The thing is that I have to reload the page 3 or 4 times to have a sharpness on it.
Maybe I have to resized the images in Photoshop (not only in 72dpi) the after it will be correct? Don't you think? (sorry I can't try it now).
Thank you Marius.
Thomas