So what does the 1/4 wave plate do? M Stewart Milton Keynes, UK
----- Original Message ----- From: Craig Zendel <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, February 04, 2002 6:27 PM Subject: Re: EOS Exposure factors for extension tubes > Mike, > > Sorry, have to disagree with you. > > A circular polarizer does not "de-polarize", it rearranges the orientation > of the light waves. As these have already passed through the linear > polarizer they are all travelling in the same plane. When crossed, the > circular polarizer will allow through those waves at the same orientation. > Thus, the circular polarizer will pass some previously polarized light, > potentially effecting the metering. > > Try it. > > Regards, > > Craig Z * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
