So, guys, what would be your verdict ? Will or will not it disturb proper measurement in any mode (regular exposure, ETTL or TTL) or AF ? Right now I have troubles to realize the internal structure fo the camera, when the light passes though the screen and when not.
Alex --- Malcolm Stewart <[EMAIL PROTECTED]> wrote: > ----- Original Message ----- > From: "Mr. Bill" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Sunday, February 29, 2004 11:08 PM > Subject: Re: EOS Bill Maxwell's HI-LUX enhanced screens > > > > 1) I though EOS metering sensors were in the bottom of the film > chamber > > with the light path going through the main mirror and off a > secondary > > mirror hinged behind it. That seems to be the way it is in my EOS > 5. > > If this were the case, the focusing screen you use would have no > effect > > on exposure. > > > > 2) Any "brighter" focusing screen trades brightness for the ability > to > > manually focus. A brighter screen passes more non-image forming > light > > through to your eye, rather than capturing it to focus on the > screen. > > > > MR. Bill > > Hi, > EOS cameras measure "ordinary" exposure using sensors in the > pentaprism area. > The sensors in the bottom of the film chamber are either for AF > (using a > "secret" mirror hinged behind and below the main mirror, or are for > the TTL > flash system. E-TTL cameras measure flash exposure using the same > sensors as > used for "ordinary" exposure, but at a different time - they use the > pre-flash > which is transmitted just before the main flash, or if mirror-up > delayed action > is selected, they measure just after the pre-flash which is > transmitted just > before the mirror goes up - so that the returns can be measured by > the sensors > in the pentaprism housing. > > Malcolm > Milton Keynes, UK > www.megalith.freeserve.co.uk/oddimage.htm > http://myweb.tiscali.co.uk/ms1938/ __________________________________ Do you Yahoo!? New Yahoo! Photos - easier uploading and sharing. http://photos.yahoo.com/ * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
