5D Mark III Spot Meter

[spinworkxroy]

Eh, maybe i rephrase my question.

For example, when using zone AF..if for example i use center-weighted metering, but i move the zone to the bottom most left corner (for a landscape shot for example), does the camera do the metering from the CENTER of the screen or does it do metering on the zone at the bottom most left that i moved the AF to?
I'm asking because for example, i'm doing an AF on a rock on the bottom left and i want the exposure to be based on that rock rather than the middle of the frame…or do i have to do an AE lock on the rock, and then reframe the shot?

 

[Loswr]

Eh, maybe i rephrase my question.

For example, when using zone AF..if for example i use center-weighted metering, but i move the zone to the bottom most left corner (for a landscape shot for example), does the camera do the metering from the CENTER of the screen or does it do metering on the zone at the bottom most left that i moved the AF to?
I'm asking because for example, i'm doing an AF on a rock on the bottom left and i want the exposure to be based on that rock rather than the middle of the frame…or do i have to do an AE lock on the rock, and then reframe the shot?

Center-weighted is center weighted, regardless of the AF point/zone you select.

When using any metering mode other than evaluative, if you want to meter on a specific part of the scene, you must do just that - set to spot metering mode, put the spot metering circle where you want to meter, press AE lock, then recompose and take the shot. Evaluative biases the metering toward the selected AF point, but still averages the entire scene (and compared it to the database of stored image parameters).

This diagram shows how the metering is weighted (the coverages are from the 7D; the 5DIII is 6.2% for partial and 1.5% for spot - see p. 167 of the 5DIII manual.

Only evaluative is linked to the AF point. On 1-series bodies, spot metering can also be linked to the AF point (or iteratively sampled from up to 8 points in the scene then averaged, called multi-spot metering).

 

[wink03]

Almost have the reversed problem:

When I'm at evaluative metering, shifting around the AF-point severely adjusts the metering. Almost the function you seem to wish for...

But when you're expecting normal evaluative metering, it kind of throws you off.

How can I turn off linking the evaluative metering to the AF-points??? Can't find it anywhere in the menus or manual.

Thanks

I don't think this has been answered yet and I have the same question.

I always use single point autofocus. But, for example, if I am focusing on something white--even if that white thing is only a very small portion of the whole picture--the image is underexposed. And vice versa when I focus on something that is a dark color. The autofocus point is acting like a very precise spot meter.

Is there a way to turn off linking the evaluative metering and the focus point?

 

[Loswr]

Is there a way to turn off linking the evaluative metering and the focus point?

No, there isn't.

 

[carterart]

Almost have the reversed problem:

When I'm at evaluative metering, shifting around the AF-point severely adjusts the metering. Almost the function you seem to wish for...

But when you're expecting normal evaluative metering, it kind of throws you off.

How can I turn off linking the evaluative metering to the AF-points??? Can't find it anywhere in the menus or manual.

Thanks

I don't think this has been answered yet and I have the same question.

I always use single point autofocus. But, for example, if I am focusing on something white--even if that white thing is only a very small portion of the whole picture--the image is underexposed. And vice versa when I focus on something that is a dark color. The autofocus point is acting like a very precise spot meter.

Is there a way to turn off linking the evaluative metering and the focus point?

On MKII the evaluative metering was independent from the focal point. Surely that is what evaluative metering is for??? The MKII became the camera of choice for landscapers because of this function and being full frame. I am not happy that MKIII is metering so differently. So much so I want my MKII back. It is driving me mad.

 

[keithfullermusic]

The easiest way to fix this is to just shoot in manual. If you're outside taking pictues of people and letting the camera meter for you it's going to be off a lot of the time. The problem is, if the sky takes up 1/4 of the image vs 1/5 of the image, the metering is going to change drastically, especially if it's really bright. Just find the exposure you like and leave it like that in manual, and adjust as the light changes.

 

[ishdakuteb]

Eh, maybe i rephrase my question.

For example, when using zone AF..if for example i use center-weighted metering, but i move the zone to the bottom most left corner (for a landscape shot for example), does the camera do the metering from the CENTER of the screen or does it do metering on the zone at the bottom most left that i moved the AF to?
I'm asking because for example, i'm doing an AF on a rock on the bottom left and i want the exposure to be based on that rock rather than the middle of the frame…or do i have to do an AE lock on the rock, and then reframe the shot?

Center-weighted is center weighted, regardless of the AF point/zone you select.

When using any metering mode other than evaluative, if you want to meter on a specific part of the scene, you must do just that - set to spot metering mode, put the spot metering circle where you want to meter, press AE lock, then recompose and take the shot. Evaluative biases the metering toward the selected AF point, but still averages the entire scene (and compared it to the database of stored image parameters).

This diagram shows how the metering is weighted (the coverages are from the 7D; the 5DIII is 6.2% for partial and 1.5% for spot - see p. 167 of the 5DIII manual.

Only evaluative is linked to the AF point. On 1-series bodies, spot metering can also be linked to the AF point (or iteratively sampled from up to 8 points in the scene then averaged, called multi-spot metering).

i found that this is the best answer to this question...