Am 26.10.2014 10:22, schrieb Thomas de Groot:
> On 26-10-2014 9:54, Stephen wrote:
>> On 26/10/2014 08:13, Thomas de Groot wrote:
>>> But, it is the reason why on goggles, the baseline /is/ extended.
>>> Consider also those military stereoscopic viewers. From my own
>>> experience with stereoscopic viewers used for aerial photographs,
>>> extending the baseline makes objects appear like billboards.
>>
>> Would that not be more of the "telescopic" effect of the lens's used?
>>
> Hmm... I am not sure how much the lens influences the effect indeed. My
> guts tell me it is the baseline mostly, but then who would rely on his
> guts? :-)

Actually it is a combination of the telescopic effect of the lens - 
which enlarges the viewed objects in the horizontal and vertical - and 
the /absence/ of (sufficient) baseline extension - which would emphasize 
the depth cues accordingly.

For instance, in 20x binoculars I think you'd ideally need a baseline of 
around 12m; obviously this would make such devices very impractical to 
carry around, so that's not done.

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