Re: [photo-3d] Re: Depth ranges

[Bob Wier <wier@xxxxxxxxxxxxxxxxx>]

>        This is perfectly normal. Two rules must be applied for a convenient stereo photo of very close
>objects:
>1. The famous thirtieth rule, unless your foreground should be seen with a stretch distortion;
>2. The differnce of on-film deviations of the foreground and the background should be less than 1.6 mm, unless
>the image should be difficulet to fuse.
>    Some people say 1.2 instead of 1.6, it depends how you look at your pictures. I use a limit of 1.6, it is
>perfectly convenient in stereo projections for people seating at a distance over the double of the image
>height on the screen; 1.2 is the limit for a stereoscope well matched to the Realist, with focus about 35 mm.
>
>
>>    Date: Thu, 15 Feb 2001 07:13:24 -0700
>>    From: "David W. Kesner" <drdave@xxxxxxxxxx>
>> Subject: Re: Depth ranges
>>
>> 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.