> you can use any other image, in fact here is one that is a drop-in replacement, it has a similar aspect ratio, style and colour balance to the original. OK,

> you can use any other image, in fact here is one that is a drop-in replacement, it has a similar aspect ratio, style and colour balance to the original. OK, so those similar things, can be helpful. Also it is available in sizes bigger than 512x512, which is also something that was criticized that Lena picture is not bigger than 512x512. However, looking at the pictures, the colours do not really look like similar to me. Also, in the suggested new picture, it look like someone else in the background of the picture too.