2002-09-27 What does the 4/3 inch measure? Is it the length or the width? I think they are referring to the aspect ratio, a unitless dimension, yet sticking inches on it. Innumerate people who don't comprehend what an aspect ratio is are attaching the word inch to it and all the dummies are following suit.
In reality, the 4/3 or 4:3 can be viewed as 4/3 mm/mm or inch/inch. The FFU-ites are calling it inches instead of inch per inch. If someone out there knows better or thinks differently, please inform us. John ----- Original Message ----- From: "Wizard of OS" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Friday, 2002-09-27 05:46 Subject: Re: [USMA:22360] Re: 2 metric companies developing non-metric devices > Kodak mentioned Full Frame LCD, I guess they meant full 35 mm aspect, so > this makes me considering that 4/3" aren hidden 35 mm! > > what do you think about it? > > bye > ----- Original Message ----- > From: "kilopascal" <[EMAIL PROTECTED]> > To: "U.S. Metric Association" <[EMAIL PROTECTED]> > Sent: Friday, September 27, 2002 5:53 AM > Subject: [USMA:22360] Re: 2 metric companies developing non-metric devices > > > > 2002-09-26 > > > > > > I don't think the 4/3 refers to inches at all. If you look down the > chart, > > the 4/3 is listed as the aspect ratio. That is, the dimensions are 4 > units > > long and 3 units high. If you look again at the chart the photoactive > area > > is given as 17.8 �m x 13.4 �m. 17.8 x 3/4 = 13.4 and 13.4 x 4/3 = 17.8. > > > > If I'm not mistaken, the VHS video camera CCD sensor was called a 2/3 inch > > sensor. Now that I see this page, I think the 2/3 had nothing to do with > > inches, but was the width to length aspect ratio of the device. > > > > This is getting to the point of utter ridiculousness placing the term > > "inches" where it does not apply. An aspect ratio is unitless. Markus > and > > Michael, since you are both fluent in German, you need to contact PC welt > > and straighten them out. They really need to stop parroting inches or > zoll > > with out verifying if inch is real or used as a trade name and to start > > using metric trade names where they apply when writing in German. I'm > sure > > they think a 3.5 zoll floppy is 88.9 mm instead of the true 90 mm width. > > > > Point them to this page shown below and show them that nothing is in zoll. > > > > John > > > > > > Subject: [USMA:22352] Re: 2 metric companies developing non-metric devices > > > I'm puzzled, as to what dimension in that system will be 4/3". The > > > sensor shown on > > > > > > http://www.kodak.com/country/US/en/digital/ccd/kaf5100ce.shtml > > > > > has an image area diagonale of 22.3 mm. > > > > > >
