At 12:28 AM +1000 6/24/02, Tim Munro wrote: >with MLU set the flash fired once when the mirror locked up then again when >I hit the remote switch to open the shutter. Does this have any adverse >effect on the exposure? I would assume not.
Your camera is probably using E-TTL metering which uses a visible preflash. >secondly, I was using mainly fill flash in Av mode to minimise any colour >casts and when I took my omni-bounce off, which I don't normally do, the >thought occurred to me - how does the system know how much fill to give >either with or without the Stofen unit fitted? I understand that it doesn't >matter when the flash is being calculated as part of the exposure OTF, but >as a minor fill ?? The camera meters flash-originating light reflecting back from the subject, so it doesn't matter if you have a diffuser on or off. This answers your questions in more detail: http://photonotes.org/articles/eos-flash/ - Neil K. -- t e l a computer consulting + design * Vancouver, BC, Canada web: http://teladesign.com/ * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
