The flat discs work just like domes - and are for measuring incident light i.e. light falling on the subject. So you meter standing where your subject is and point the meter at the camera (on tripod, preferably). You can point the meter at the light source but the it gives you the highlight value - useful, but you have to think a bit. But you always have to do that anyway... Its hard to imagine why one or the other would be for 3D subjects and the other... forget it. All the best! Raimo Personal photography homepage at http://www.uusikaupunki.fi/~raikorho
-----Alkuperäinen viesti----- Lähettäjä: Anthony Farr <[EMAIL PROTECTED]> Vastaanottaja: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Päivä: 28. toukokuuta 2003 6:44 Aihe: Re: Incident meter suggestions wanted >The flat dome, aka "Lumidisc" or incident disk, is used for metering of flat >surfaces e.g. copywork, or where walls or floors are the important subject >matter. It's possible to read the light incident on THAT particular plane, >rather than all of the planes in a scene. Using an incident dome in copy >photography gives a reading about a half stop out (but I've forgotten >whether it produces over or under exposure). > >Incident domes are for metering 3 dimensional subject matter with respect to >the camera's viewpoint (by reading from subject position BACK TOWARDS the >camera). > >regards, >Anthony Farr > >----- Original Message ----- >From: "zcaballero" <[EMAIL PROTECTED]> > > > >> How do the flater dome affect readings? More or lesss accurate than >> bigger, rounded dome? Have you compared readings? >> Z >> >
