Calculating of Film Gate for Boujou and Syntheyes users
sony Ｆ23(imager 2/3" CCD) 9.6mm
HDC1500(imager 2/3" CCD) 9.6mm
How to Calculate
CCD have a round range, and its circle is called "Image Circle".
"2/3inch" means the size of Image Circle.
But 2/3inch(=16.9mm) is not a diameter of Image Circle.
In fact 2/3 inch CCD has just 11mm across Image Circle.
It is easy to confuse.
This grade was set long time ago when camera tube.
Old type camera tubes have curved surface.
Then the diameter of Image Circle is just 11mm.
Finally We find 9.6ｍｍ