Originally posted by jritzmann
Well, as much as I'm sure it wont be welcomed, I'm of the full educated opinion that this is a bird.
Hi Jeff, thanx for your time spent.
I just expected a little more than an opinion (no offense)
Originally posted by jritzmann
and puffy style neck area.
Carefull with pareidolia on that one so I reject this argument.
Originally posted by
jritzmannThe overall lightness of the UO image is due to motion blur, and not distance, the bird is likely within several feet, and not yards or
more.
I agree, motion blur could create this absorbtion like "effect", this is probably why we did get mostly blue while testing the channels
Originally posted by jritzmannThe specular highlight seen is most likely a color variant of the surface, coupled with light direction,
making it appear reflective. We've see much the same effect in other swept birds shots in the past.
Preen oil is what creates the reflections :
en.wikipedia.org...
Originally posted by jritzmannThere is also to the rear edge, what appears to be appendages, or lateral legs.
Same thing, pareidolia, I cannot accept this.
Originally posted by jritzmannThe much (apparently) discussed cone shape is an effect of beating wings. Due to the angle of the bird to
the shooter, the far wing is seen only in close proximity to the bird's body, as it's moving there the least, but still quickly enough to blur. It
moves less towards the body, and more as it moves down the wing, giving a triangle appearance.
Do you have any exemples to show taken with similar characteristics (same shutter speed, "cone" or "triangle" effect & "transparent" effect)
?
This picture was taken with a 1/400 sec shutter speed and a pigeon for example (adult size : 0.61 m wide) doing stationary flight has a tip of the
wing speed of 6 m/sec or 5 moves (flapping) / sec, smaller birds have a higher flapping frequency but mostly while doing stationary flights, like this
one :
fr.treklens.com...
I assume this bird is not doing stationary flight (body's inclination < 45 °) and this could be easyle demonstrated by ornithologists. This is why I
do not understand why it is blurred like this with a 1/400 sec picture with such a slow flapping frequency.
Originally posted by jritzmannThe lower base of the "triangle", is again the same idea: The wing is beating wider at the farthest
point, and closer towards the body, giving a wedge shape. Howeve ron this side the shooter has a wide and more "frontal" area to see, and therefore
more surface area is exposed to blur. The opposite wing is away from the shooter, giving less opportunity for exposure, and less of an
image.
How can you demonstrate this ?
A few drawings :
One other thing, how can you say it is a bird without doing any calculations
regarding the bird's distance estimation (closest & farthest) ? By doing this, we could know if it's maximum angular velocity would be fast enough
to make it hard to identify (motion blur), don't you think ?
One last thing, I want to make something clear. My goal is to identify
X, if X is a bird, fine with me, I will not be frustrated but I want to see a demonstration so that I will be able to demonstrate it myself to
others
and get over with this case. In other words, if it's a bird, it's demonstrable.
Peace,
Europa
[edit on 29-3-2008 by Europa733]