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Confused about metering/focusing

Steve6344

Aventura, US
517 posts

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Steve6344 Gold Member Nikonian since 31st Jul 2012
Tue 30-Oct-12 08:57 PM

Suppose I have selected a particular metering mode, ie spot. Now let's say I manually select an off-center focus point. When I press the release button half way I assume the spot metering is done at the selected focus point and not in the actual center of the picture. Is that correct? Is the same true if I am selecting center-weighted metering? (Sorry if this is stupid question-I looked at the manual but it didn't seem to explain it very well.) Thanks.

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blw

Richmond, US
28713 posts

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#1. "RE: Confused about metering/focusing" | In response to Reply # 0

blw Moderator Awarded for his high level of expertise in various areas Nikonian since 18th Jun 2004
Tue 30-Oct-12 08:34 PM

No, center weighted means, well, weighted in the center! But spot works as you described.

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Steve6344

Aventura, US
517 posts

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#2. "RE: Confused about metering/focusing" | In response to Reply # 1

Steve6344 Gold Member Nikonian since 31st Jul 2012
Tue 30-Oct-12 10:32 PM

Thanks for responding.

So If I'm focusing in the corner and using center weighted metering the metering is being done in the center.

What is the scenario that would result in someone shooting that way?

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JosephK

Seattle, WA, US
7109 posts

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#3. "RE: Confused about metering/focusing" | In response to Reply # 2

JosephK Silver Member Fellow Ribbon awarded for his excellent and frequent contributions and sharing his in-depth knowledge and experience with the community in the Nikonians spirit. Nikonian since 17th Apr 2006
Tue 30-Oct-12 11:01 PM

>So If I'm focusing in the corner and using center weighted
>metering the metering is being done in the center.

That is correct.

>What is the scenario that would result in someone shooting
>that way?

Trying to come up with something that even remotely makes sense, say you are shooting a bride, you want her outstretched hand in focus (corner) but her dress (center) to govern the metering.

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Joseph K
Seattle, WA, USA

D700, D200, D70S, 24-70mm f/2.8, VR 70-200mm f/2.8 II,
50mm f/1.4 D, 70-300mm f/4.5-5.6 VR, 18-70mm f/3.5-4.5 DX

blw

Richmond, US
28713 posts

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#4. "RE: Confused about metering/focusing" | In response to Reply # 2

blw Moderator Awarded for his high level of expertise in various areas Nikonian since 18th Jun 2004
Tue 30-Oct-12 11:13 PM

Center weighted is, I think, mostly a matter of compatibility with the past. Forty years ago having a meter at all was at the technological state of the art; the first meters were averaging meters that pretty much read the entire frame. Center weighted meters were developed to improve upon that, and they have been refined over time. One of their appealing characteristics is that they are very consistent. Unlike the default matrix (or Canon "evaluative") meter, small changes in the frame composition do NOT sometimes cause large swings in the meter reading. So for those two reasons center weighted meters are still with us. But as you note, there are more advanced situations where center weighted doesn't really make a lot of sense.

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My gallery is online. Comments and critique welcomed any time!

Steve6344

Aventura, US
517 posts

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#5. "RE: Confused about metering/focusing" | In response to Reply # 4

Steve6344 Gold Member Nikonian since 31st Jul 2012
Wed 31-Oct-12 09:37 AM

So I guess a good way to use center-weighted metering would be to meter and focus in the center by holding the release button half way down and then to recompose as desired and shoot. Does that make sense?

What type of metering is used most of the time?

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blw

Richmond, US
28713 posts

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#6. "RE: Confused about metering/focusing" | In response to Reply # 5

blw Moderator Awarded for his high level of expertise in various areas Nikonian since 18th Jun 2004
Wed 31-Oct-12 10:44 AM

That's a reasonable strategy. It's what people always did in the days when center-weighted was state-of-the-art.

> What type of metering is used most of the time?

Depends. I use matrix a lot. I also use spot a lot. Some folks use CW all the time. Horses for courses.

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My gallery is online. Comments and critique welcomed any time!

Chris Platt

Newburg, US
481 posts

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#7. "RE: Confused about metering/focusing" | In response to Reply # 5

Chris Platt Silver Member Nikonian since 30th Sep 2012
Wed 31-Oct-12 01:05 PM

I use CW most of the time and use the AE lock button if I want to reframe the image.

G