It’s only 2 dimensions after all
Photography is an illusion of reality, we largely accept that what we see is a truthful representation of what was seen be the person taking the picture. In reality though it is a flat two dimensional facsimile. Even if the photographer doesn’t manipulate the image after the act of capturing it, the image is influenced by the choices that were made in it’s creation. The photographer may have made camera settings or a lens selection in order to effect your perception. This image is an obvious reminder of the artifice but all images are tinged by this reality.
Digital cameras provide the potential for including almost any image modification that are, currently or conceived, of being done on a computer. As the ability to manipulate the image at the time of capture is expanded we may need to remind ourselves about what is real from time to time.