[Leica] R9 users, is there no exposure lock when using matrix metering, only on spot and average?

[gpinkcp at msn.com (Gary Pinkerton)]

Y'all have peaked my interest. I'm curious what type lighting situation 
would you use a lock for matrix (or multi pattern as Leica calls theirs)
Thanks
Gary

> Date: Sun, 13 Mar 2011 15:09:40 +1030
> From: benedenia at gmail.com
> To: lug at leica-users.org
> Subject: Re: [Leica] R9 users, is there no exposure lock when using matrix 
> metering, only on spot and average?
> 
> And as an aside - exposure lock is plenty useful once you have a feel
> for how the meter works.
> 
> Marty
> 
> On Sun, Mar 13, 2011 at 3:08 PM, Marty Deveney <benedenia at gmail.com> 
> wrote:
> > Not sure about the mode change, but it definitely locks.
> >
> > Marty
> >
> > On Sun, Mar 13, 2011 at 12:47 PM, Philip Forrest
> > <photo.forrest at earthlink.net> wrote:
> >> I think that exposure lock switches matrix to center-weighted at the
> >> time of making the calculation. That is, if the camera allows the two
> >> to be set at the same time the program would have to shift out of
> >> matrix or else there would be too many images that would be just
> >> unusable due to things like bright/dark areas that the matrix too
> >> account for but then were not in the final exposure. My F4 did this, if
> >> I recall correctly.
> >>
> >> Phil Forrest
> >>
> >>
> >>
> >> On Sat, 12 Mar 2011 19:33:09 -0600 (CST)
> >> grduprey at mchsi.com wrote:
> >>
> >>> Marty,
> >>>
> >>> Are you sure it works? Matrix metering by definition is a program
> >>> that takes all of the light values seen in several regions of the
> >>> frame and runs them through a complex program to come up with a
> >>> exposure value for proper exposure.  Exposure lock would be useless
> >>> in this mode.  My wife's D200 has matrix and exposure lock does not
> >>> work in this mode. Same with my R8.
> >>>
> >>> Cheers,
> >>> Gene
> >>>
> >>> ----- Original Message -----
> >>> From: "Marty Deveney" <benedenia at gmail.com>
> >>> To: "Leica Users Group" <lug at leica-users.org>
> >>> Sent: Saturday, March 12, 2011 6:09:25 PM GMT -06:00 US/Canada Central
> >>> Subject: Re: [Leica] R9 users, is there no exposure lock when using
> >>> matrix metering, only on spot and average?
> >>>
> >>> Exposure lock works in matrix mode on my Nikon F90x, F100, F4 and F5
> >>> cameras.  I just tried it.
> >>>
> >>> Leica must think that this is the way you _should_ use matrix
> >>> metering.
> >>>
> >>> Marty
> >>>
> >>> On Sun, Mar 13, 2011 at 7:23 AM,  <grduprey at mchsi.com> wrote:
> >>> > Vick,
> >>> >
> >>> > Matrix metering is a computer averaging program using a whole slew
> >>> > of factors.  Because of this there is no exposure lock, as you do
> >>> > not have a single point to lock onto.  By definition the computer
> >>> > program makes the exposure from an average of all levels in the 5
> >>> > zones used by the camera.  You can lock on to a single value only
> >>> > in spot mode.  This is the same even if you use a Nikon, Canon,
> >>> > Sony etc.  The R9 manual explains this quite clearly.
> >>> >
> >>> > Cheers,
> >>> > Gene
> >>> >
> >>> > ----- Original Message -----
> >>> > From: "Vick Ko" <vick.ko at sympatico.ca>
> >>> > To: "Leica Users Group" <lug at leica-users.org>
> >>> > Sent: Saturday, March 12, 2011 2:27:45 PM GMT -06:00 US/Canada
> >>> > Central Subject: [Leica] R9 users, is there no exposure lock when
> >>> > using matrix metering, only on spot and average?
> >>> >
> >>> > Hey, R9 users, is there no exposure lock when using matrix metering,
> >>> > only on spot and average?
> >>> >
> >>> > Mind checking on your camera for me?
> >>> >
> >>> > On mine, only the spot and average metering work with the exposure
> >>> > lock, i.e. locks the exposure when I push to the 2nd pressure point.
> >>> >
> >>> >
> >>> > Vick
> >>> >
> >>> > _______________________________________________
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> >>>
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> >>
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