More unfounded stop down advocacy. when you get down into the low light region where stop down metering wont at small apertures you are already needing to tripod mount the camera so there is no reason to be shooting wide open, most lenses are poor wide open.
Like I said if anyone here thinks stop down metering is better or as good as open aperture metering than I would like and explanation why NONE of the camera companies use it anymore or even offer it as an option in additon to open aperture metering? Because its isnt as good that's why. The very very slight advantage it has over open aperture metering in accuracy in SOME bright conditions isnt needed but the all disadvantages it has under most conditions definitely are major differences that make the meter inoperative or less convenient. In other words, stop down metering "advantages" don't matter, but open aperture metering advantages DO matter. the method with the most advantages that matter wins and stop down metering doesn't have ANY advantages that matter... JCO -----Original Message----- From: fra [mailto:[EMAIL PROTECTED] Sent: Monday, September 19, 2005 6:54 AM To: [email protected] Subject: Re: green button wars (again) Mark Erickson wrote: > My take: > > reading when the lens is stopped down. Open aperture metering takes > the meter reading with the lens wide open. "Green-button metering" > takes in less light than open aperture metering. If you try to use > "green-button metering" in low light with a small lens aperture, you > might run out of the useful range of the meter. Fortunately, with modern metering cells this is a scenario that almost never happens - who does take f/11 shots in available light at 3 EV? At such lower light levels most people shoot wider open... > On the other hand, "green-button metering"(also known as stop-down > metering) may be more accurate than open-aperture metering because it > takes the meter reading with the lens at the same aperture as will be > used to actually take Also, it isn't affected by vignetting of the lens, when using evaluative or averaging metering mode. Fra
