[photo-3d] Re: Depth ranges

[cfholzner@xxxxxxxx]

--- In photo-3d@xxxx, "David W. Kesner" <drdave@xxxx> wrote
> > ( the 1/30 rule of thumb> 
> OK, I understand the rule, but I still don't understand why 
> macro images I have taken with a stereobase of 11mm have 
> objects less than a foot away that are hard to fuse, yet the 
> mushroom image does not with objects that are hundreds of feet 
> away.
> 
> David W. Kesner
> Boise, Idaho, USA
> drdave@xxxx

Lets do the math:

Stereo base of 11mm times 30 equals 330 mm for the nearest object.

330 mm divided by 25.4 mm/inch = 12.99 inches.  

As long as the nearest object is no closer then 12.99 inches you are 
following the 1/30 rule.  Objects less then 12.99 inches away may be 
hard to fuse.

Chuck