[MF3D.FORUM:1107] Re: Miniturization.

[Alan Lewis <3-d@xxxxxxxx>]

Bill Glickman wrote:

> > >The only problem I have with this..... when shooting scenes
> > >that have subjects from 30ft to 500ft.... wouldn't a 65mm base produce
> very
> > >little stereo effect...almost as if you were looking at 2d slides in a
> > >viewer...of course no one would complain because if its good film and a
> good
> > >chrome with a good viewer, then it creates a nice view, not neccessarily
> a
> > >strong depth scene, or a scene that makes people say, I feel like I am
> > >standing in there.  Am I off base here?

You seem to have a lot of different effects that you are trying to
attain all at one time.  This will be difficult.

For the scene mentioned above I feel the more normal stereo base of
around 65 to 75mm would be better, you will get the 3d effect from the
foreground object and the distant object will look normal (not much 3d
effect).  This how we actually see something like this.
There will not be any problem viewing a slide like this when using a
normal stereo base.

The question remains if this is pleasing to you.  I am saying that it
will be the easiest to view, will have 3d effects, and will appear
natural.

> 
>          FYI, all these shots used 80mm lenses.  But this strategy seems
> like a great idea!  It would the problem with certain shots, but give the
> immersive feel in the shots that have no reference subject..... now one last
> issue though, my cameras do not due a 65mm base, 6" or 150mm is as close as
> mine get, is that still OK considering nothing is closer than say 12 ft?
> Just your opinion, I will experiment....

You mention the "immersive" feel.  Are you using the larger stereo base
of your cameras to accentuate the 3d effect, and are you defining this
as the immersive feel?

When I think of an immersive feel I think of having an image that is so
large that I feel like it has no boundaries and I am standing right
inside the scene.  I don't equate it with how much the 3d is accentuated
by camera separation.  I feel these are two different effects.

Are you trying to force as much 3d effect as possible out of every
picture?  I would think this would produce images that are too hard to
view comfortably.  

I've used hyper stereo base on cameras many times and I don't always get
an image that I like.  It really only works in specific circumstances. 
I agree with George on this point; If there are any near objects at all
then I would recommend a more normal stereo base and reserve the hyper
base for distant only scenes.

-- 
Alan Lewis  
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