reply to post by CoverlessTech
You had the right idea when you said "looks as if it goes behind the clouds". That would be a point of reference, if we could say that it had gone
behind some object, with a degree of certainty.
That would tell us that it's probably a minimum of a few tens of thousands of feet away (at a guess), and must therefore be moving fairly fast, if it
had indeed gone behind a cloud of course.
With such a fleeting appearance, it's going to be impossible to tell either way with 100% certainty.
One other way you could work out how far away it was (or at least tell apart objects that are a few feet off the ground from those that are 100's +
feet off the ground), would be to film an object/the same patch of sky simultaneously with two cameras that are a few meters apart. Comparing the
differences between the two sets of footage would tell you weather the object was near or very far off.
Ideally you want some solid or predictable frames of reference in frame too - eg. a prominent building and/or a celestial body eg sun, moon, stars
etc, and make sure the time is correct, to the nearest second on your equipment preferably. Doing all these things would make the footage very
valuable (potentially, depending on how much attention to detail you paid) if you really did catch something, even if you can't run two cameras, this
would always help future investigations into the footage.
You already did most of these things, so off to a pretty good start I'd say. Not to mention using a tripod, which is something people often forget
By the way, if you try blocking out the sun, say using a streetlight or tall pole, you'll get much better contrast between stuff in the sky, and the
sky which will make them easier to see, but be warned that there is a surprising amount of detritus in the air, any of which can catch the light and
become briefly visible.
Depending on where you live, this can be quite bad at certain times of year, and if you have a search here (let me know if you can't find them), you
should find a couple of threads at least (try a search string along the lines of "thousands of triangle shaped ufos") with footage where people have
filmed the air when it's a blizzard of insects/seeds.
Film at night when it's clear, would be my advice, then you won't see all the stuff that's in the air, so any "real" UFOs would stand out.
[edit on 28-3-2009 by C.H.U.D.]