Re: SEM stereo

[T3D John Bercovitz <bercov@xxxxxxxxxx>]

Ted G writes:
 
> I also agree with John Vala that it isn't very helpful to think of 
> the EM as any kind of optical lens--at least from a 'geometric 
> optics' point of view. 
 
Not even in the limited sense I described in a previous post - that 
the e-beam leaves the pinhole and is rastered out onto the specimen 
sort of the reverse of photons going from object to entrance pupil of 
camera lens?  If not, why not?
 
Thanks,
John B
 

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