Re: Hyperstereo

[P3D Gabriel Jacob <jacob@xxxxxxxxxxxxxx>]

Lincoln Kamm writes that 3 inches of separation is not enough for the 
Grand Canyon. You have a very good point there in that regard because
if one doesn't have enough separation the image will look flat. But that
is not at all that bad in the sense that only the far away distant
objects will show no depth. In certain cases like the Grand Canyon
it is okay and if not excessively done with each and every picture.

I have some pics of a beach in Greece where I took some pics of
the beach and surroundings. It came out pretty good and was done 
with a separation of roughly two feet with a 50mm lens. The depth
was good but the background trees which were a couple of hundred
feet away had a cutout board effect. Also the mountains rising behind
above the trees a further few kilometers were more flat. This didn't
capture the sense of the majestic mountains rising in the background
as much as I would have liked it too. Now would more separation (and
medium format size) have helped. Probably yes. That and better resolution.
Yes even a 35mm camera is not adequate to capture the imagery our eyes
see all the time in 3D and is why the mountains don't look so flat to
our naked eyes with roughly 2 1/2 inches separation. There is a fine
balance between the depth and shrinking everything. In my pic maybe a bit
more depth would have been nice, but anymore and it still would have
lost the feeling of the space I tried to capture. So a comprimise is
in order between the two.
As to Wrebbit taking normal separation when they take some close-up
pics, I haven't seen any yet. In general even their close up pics are
slightly on the hyper side. 

BTW regarding simultaneous 3D picture taking I noticed another one that
was not done simultaneously and suggests a wide separation which indeed
it is. On the New York containerror ;-) 1, pic #5 the images are not
identical and I don't mean perspective wise! This one is an example of
excessive hyper stereo. Pic #3 is not as bad. Both are aerial shots of
NYC. Another example of excessive stereo is in Great America 1, pic #1
which shows Los Angeles. In that pic even with the wide base it 
didn't help resolve the depth of the background skyline and mountains.
Of course the distant background has another variable working against
it which is the inherit loss of detail in far away objects due to haze
,etc. So all in all I think as 3Dr.T suggests, one has to cautiously
and judicatively be aware of when and where to use wide stereo bases.
They have their place but let's not get too hyper all the time.

As to the 3Discover plans, yes as Lincoln mentions they have quite a few
titles on the drawing boards. Sorry Greece is not mentioned at the
present time. They don't contract out as yet, so sorry Dr.T, you can't
get a free trip out of them yet.

Gabriel who still happens to love his 3Discover.


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