Brilliant work, OP, starred and flagged.
The whole picture is a montage.
I'd say the body, the hands, the gun and the rifle were all added separately.
Look at the sharp-edged angles at the edge of the clothing. Very unnatural.
In a photo areas like the background showing under the underarm and under the groin will be slightly fuzzy. There is no fuzziness in these areas.
Look carefully at the hi-res image and you can see where the neck has been joined to the head.
Look at the shadow below the nose and you can see there was a very bright light immediately above his head to cause the shadow to be so dark,
hard-edged and pointed straight down. Lights like that are commonly used in interrogations, as sitting for long periods under such a close, powerful
overhead light induces intense headaches which disorient and anger the victim, but is not classed as torture.
The shadow on the ground is simply ridiculous -
There are other odd things about the photo too, such as the "phantom" against the door to the far left. Is that someone who has been obscured, or
the shadow of a person who has been removed?
Not a good idea to worry about the background though, as it detracts from the arguments regarding the main figure.
One point worth noting:
The dates on the papers are used to determine the date of this series of photographs, making them appear to have been taken before the
assassination.
On the other hand, it would be interesting to know if these pictures were actually made before the assassination.
An interesting point is that Oswald had been recently employed to fake photos, and owned an expensive
Minox spy camera.