I would disregard what the size of the picture shows on the screen. THat can be resized to anything, but the underlying image size will not change.
If it were 650 wouldnt it appear to be the same size?
Are you aware that the Seurat on the left has been horizontally stretched?
Did not notice that until now, thank you. I am not sure why photoshop would stretch it?
When I opened the great wave image I got a notice that said
Pixel aspect ratio correction is for preview purposes only. Turn it off for maximum image quality.
I turned it off but photoshop still stretched the other image for some reason?