3 or 4 frames? Every single Wiegman frame showing Mr Lovelady has had a dark vertical strip added to his right side! Even when Mr Lovelady takes a step down, the 'shadow' moves down with him, continuing to cover most of his right side. Even if (in the parallel universe some of you KeepOswaldAwayFromTheFrontSteps people think hosted this assassination) the shadow line from the western column had extended diagonally right across much of the west side of the entranceway, this would be bizarre!
So your objection to the evidence of Mr Oswald's presence just behind Mr Lovelady is not that you have an alternative explanation for it but that the cover-up people in 1963 didn't predict the rise of digital technology and an online research community capable of producing 3D reconstructions of the entranceway! 
Now!
The priority in this rush job was to kill any identification of Mr Oswald in Wiegman. (Remember: they knew exactly where to find Mr Oswald in Wiegman, because Mr Oswald will have told Captain Fritz in his first interrogation exactly where he was at the time of the shooting. Mr Lovelady's name will have been mentioned, which explains why they went straight to him with a blowup of the Altgens photograph.)
Here's what the original Wiegman film showed:
1. In the frames showing Mr Lovelady at higher elevation, the original Wiegman film showed
-----------a second head in very close proximity to Mr Lovelady's head (right behind it)
-----------a white tshirt and bare right arm, identifying the owner of the second head as a casually dressed white male employee.
Solution to the Lovelady@HigherElevation frames? Add a crude dark strip down Mr Lovelady's right side. People will assume it's a natural shadow. In the absence of a second body, it's unlikely anyone will even notice the second head. Even if anyone were to do so, they won't be able to identify it as Mr Oswald's. Could be anybody!
2. In the frames showing Mr Lovelady at lower elevation, the original Wiegman film showed
-----------Mr Oswald's sunlit head/face now easily visible in all frames (because he hasn't changed elevation)
-----------Mr Oswald's t-shirted upper body and bare arms now easily visible
-----------> Mr Oswald now easily identifiable
Solution to the Lovelady@LowerElevation frames? Don't just add a crude dark strip down Mr Lovelady's right side--------blacken out all of Mr Oswald, head included. It will be crude work, but it will fool the fools!
The key point in all this is that the entire scam gambled on no one's ever noticing that the shadow down Mr Lovelady's right side couldn't possibly be a natural shadow. Up to very recently, the gamble paid off!
Your post no. 570 in which you claim that 2nd head which IS VISIBLE, therefore NOT blackened out, is the head of Oswald.
Your suggestion that the conspirators were pressed for time, yet they apparently had enough time to examine EACH FRAME of the Wiegman film AND had the time to use a technique of some sort to INDIVIDUALLY blacken EACH FRAME one by one, which is NOT a hastily done process... and yet.. the HEAD which is VISIBLE , they MISSED?
?
Whether the conspirators anticipated future examination of Wiegman film with improved tech in the future is irrelevant to my question WHY DIDNT THEY BLACKEN OUT THE FACE of the supposed Oswald figure?
do you have another explanation than "a rush job" as the reason to have missed the 2nd head which if it is as distinguishable as you claim to be Oswald, they SURELY should have made EVERY effort to make sure the most ESSENTIAL element of the figure, the FACE is blacken out.
Or is the 2nd head an aberration or motion blur and does NOT actually exist? If that is the reason for the 2nd head being visible, THEN your anomalous black shadow alteration theory makes more sense, at least to me
