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May 24, 2012, 08:39:41 AM
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Image sharpness / question  (Read 1133 times)

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Posts: 2355

Germany


how comes that some successive Zapruder frames show differences regarding the sharpness, here are some examples.





Z229 lacks the sharpness (if that is the correct term) of Z228 and Z230.

Even non film data, such as the dirt marks lack the sharpness of the other frames.
Is MPI to blame for this when they scanned and digitized the frames or what is the explanation for this obvious discrepancy ?
I am not implying anything with this, I just want to know how this can be explained.

here one more example:





composite:


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"There's none so blind as those who will not see."

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Gerda - Very good observation.  We would need to look at an 'original'  5x4 trans,  as this has been through quite a process. I was listening to the guy, Todd Murphy in the youtube clip.   
A couple of theories (I'm no expert!) - could be Newton rings and they have attempted to use anti-aliasing' software to remove/mask etc, post production.   or the 5x4 are as perfect as can be and the algorithms in rotation  / piecing together has introduced soft frames and moire effects.   Does anyone know much about the Agfa Duoscan ? (seemingly used  @ 1500 dpi) 
Sorry. can't help much more. Yes I do see patterns. 


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