If you forget to press the green button, it doesn't mean you'll miss the shot, because you'll get it at full aperture (or the aperture set on the lens) anyway - maybe not what you intended, but it might still be good enough.
I just used an M135/3.5 at f8, f16 and f32, with and without pressing the green button, and with matrix and spot metering, and I got every frame looking perfectly exposed.
I'd get it - it works.
HTH
John Coyle
Brisbane, Australia
----- Original Message ----- From: "Don Sanderson" <[EMAIL PROTECTED]>
To: "PDML" <[EMAIL PROTECTED]>
Sent: Wednesday, September 22, 2004 7:35 AM
Subject: spam: The "Infamous Green Button" Good or Bad??
I've stayed out of this one so far but, .......................
Since I may be in a position to purchase a *ist D in the next week or so (home re-finance), I have a few questions about the "Green Button" method for "Pre-A" lenses.
1.) How much time is actually wasted having to "pre-meter" with K/M lenses,
1/2 second? 2 seconds? More? Less?
2.) Have any of you actually missed an important shot waiting for, or
forgetting, the pre-meter step?
3.) Can this method be used in conjunction with "Spot" metering?
Since I have little problem using Spotties, Ks and the MX it doesn't sound like any big deal. Agree or dis-agree?
Don (Was going to wait but didn't expect the money to sorta fall in my lap)

