CCD sizes

[P3D John Bercovitz <bercov@xxxxxxxxxxx>]

I saved this question from sci.optics:

> What is the significance of the 1/3", 1/2", and 1" nomenclature refering to
> television camera pickup sizes?  The 1/3" is actually about 3.6mm x 4.8mm for
> a 6mm diagonal (.24" diagonal), the 1/2" is 4.8mm x 6.4mm for an 8mm diagonal
> (.32" diagonal), and the 1" is 7.86mm x 14.02mm for a 16mm diagonal
> (.63" diagonal).  Where do the popular values of 1/3", 1/2", and 1" come
> from?

I measured the active area of my 1/3" and it is 3.8 x 5.1 mm for ~.25" diag.
I'd sure like to get a second one and make a remote stereo setup.  But where
is the time?  Perennial question.

John B


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