[Fendlesworth]

I've made it Ben.

It has to do with linking angular velocity with the Limo's true velocity. If you want to know if the Zapruder Film has been altered, it would be nice to know the actual speed of the limo as a function of time.

This is doable, and you could compare this with the Nix Film. All you need is a horizontally-stabilized version and a few geometric measurements of Dealy Plaza. You would also need the film's reel speed. You said:

Quote:I would state that from this viewpoint, Zapruder would have the most accurate perspective of the limo's speed.

No. A helicopter view from above would be more accurate. 

Quote:It cannot "mitigate" a slowdown

Not my choice of words. This is a ridiculous way to frame my post.

Quote:...it can only make it most visible.

More visible than what? 

Quote:...and there's nothing in such a perspective that would disguise the speed of the limo.

Yes there is, but an odd choice of words.

Quote:If you have a point, you're more than welcome to make it.

I have, and didn't expect it to be greeted by your condescending bullshit.

Again: The Limo appeared to be travelling the slowest at the point where it should have been appearing to be travelling the fastest (assuming constant speed); orthogonal to Zapruder's line-of-sight. 

You might expect that the Limo actually slowed-down more than that percieved by the viewer. 

If you think that humans have some infallable speed-sensing abilities, take a look at this paper: Apparent Speed of Sampled Motion

Percieved speed is relative to the observer. The Limo's true speed is what really matters. Percieved speed can change as the angle and distance changes between the object and the observer.