That's a misrepresentation of "seeing".
The
image is formed by the tones you see. When you look at a black and white photo:
View attachment 377551
you don't call what you see "shades of grey" - in my example, you'd say you see a cow. Whether or not there is anything significant about it is a different matter. Whether or not there is any "aesthetic" to the image is tied up in the subject, the composition, the rendition, the viewer, etc. - all of which is conceptually well past perception of tones.
A person never sees without an attempt to identify. Even when confronted by a purely abstract photo, there will be an attempt to identify - which may be completely impossible -, which may leave the viewer dwelling only on shades and possibly shapes. But that will still come with the knowledge of the inability to identify, which is itself a form of identification: the abstract or unidentifiable, non-referential, just whatever it is named or what it is in itself.