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calculating focal length

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petcov petru
calculating focal length
on Dec 11, 2011 at 5:09:15 pm

Hello I don't know for sure if this is the right forum to post this question but i'll give it a try :)

I want to know how to calculate focal length of a videoclip with a large zoom which I was shooted.
The camera is Canon FS100 if that matters.I'm very beginner so I don't know exactly what those numbers means but I can tell you that on the camera beside lens I see that is written 2.6-96.2 mm 1:2.0.
So to tell you how I have shooted the videoclip - I was standing in the midlle of the street and I made a zoom from minimum to maximum on a building which close the street(like dead end street).
I aproximate it about 6-7 meters tall and maybe 20 meters wide.
The camera is hendheld and has some shake,I have not moved.

I don't know if I have to provide more information,but anyway that is all I can tell you at least for now.If you want to ask me something just go ahead.

So if anybody could help me I would much appreciate it.Thanks

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