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Thread started 09 Feb 2009 (Monday) 20:18
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EXIF Data Question: Metering Mode = "Matrix"

 
snyderman
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Feb 09, 2009 20:18 |  #1

What does this mean? I've read through a my 30D book and not seeing this listed anywhere. The camera is usually set to 'evaluate' metering mode.

Any insight for me please and thank you?

dave


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tsw910
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Feb 09, 2009 20:31 |  #2

Matrix metering is known with Nikon .. not Canon


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snyderman
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Feb 09, 2009 20:39 |  #3

tsw910 wrote in post #7291514 (external link)
Matrix metering is known with Nikon .. not Canon

No reason to doubt your explanation, but I'm shooting with a Canon 30D and Canon lenses and all my exif data says 'matrix' on the metering mode item. Can you see the data on this pic? If not, please tell me how to copy a pic from photobucket to this site so you can see? Thanks, I really appreciate your help.

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mrkgoo
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Feb 09, 2009 20:45 |  #4

Probably depends on the software you are using to read the exif.




  
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eror11
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Feb 09, 2009 20:45 |  #5

Yeah, I can see the data - 30D and matrix... anyway, I think it's the same as evaluative, I have matrix on my pics as well (400D)...


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E-K
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Feb 09, 2009 20:47 |  #6

What are you using to view the EXIF? Some just use "matrix" as a generic term which would equate to evaluative for a Canon.

e-k




  
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snyderman
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Feb 09, 2009 20:48 |  #7

eror11 wrote in post #7291647 (external link)
Yeah, I can see the data - 30D and matrix... anyway, I think it's the same as evaluative, I have matrix on my pics as well (400D)...

Great! thanks. I have the camera set to 'evaluate' as a rule. I was looking at the exif data in Picasa3--could be why the data says matrix, I guess. No big deal, but it was a puzzler to me!

thanks again.

dave


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snyderman
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Feb 09, 2009 20:49 |  #8

E-K wrote in post #7291660 (external link)
What are you using to view the EXIF? Some just use "matrix" as a generic term which would equate to evaluative for a Canon.

e-k

thanks e-k. Using Picasa3 to store most of my work right now.

dave


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iof
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Feb 09, 2009 21:07 |  #9

When I read your exif using Opanda IExif 2 I get Metering Mode = Pattern. Mrkgoo gets my vote.


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PhantomII
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Feb 09, 2009 21:30 |  #10

Using the Exif Viewer plug-in for Firefox, it shows "evaluative" under camera maker notes and "pattern / multi-segment (5)" under Sub IFD




  
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beepclick
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Feb 09, 2009 21:42 |  #11

My Panda EXIF viewer says "pattern" mode.

When you browse your files in Canon's DPP software, click File/Info and see what that says.


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Sean
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Feb 09, 2009 22:09 |  #12

snyderman wrote in post #7291598 (external link)
No reason to doubt your explanation, but I'm shooting with a Canon 30D and Canon lenses and all my exif data says 'matrix' on the metering mode item. Can you see the data on this pic? If not, please tell me how to copy a pic from photobucket to this site so you can see? Thanks, I really appreciate your help.

Did you take this pic, or is it an example of what you are talking about?


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Hermeto
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Feb 09, 2009 22:23 |  #13
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Matrix = Pattern = Evaluative


What we see depends mainly on what we look for.

  
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static808
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Feb 09, 2009 22:45 as a reply to  @ Hermeto's post |  #14

when i read the thread title, i thought i was in nikoncafe.com...


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basroil
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Feb 09, 2009 23:05 |  #15

using FxIF (firefox), i get Camera Make: Canon
Camera Model: Canon EOS 30D
Image Date: 2009:02:06 19:52:11
Flash Used: No
Focal Length: 85.0mm
CCD Width: 14.19mm
Exposure Time: 0.0020 s (1/500)
Aperture: f/2.0
ISO equiv: 1600
White Balance: Auto
Metering Mode: Matrix
Exposure: Manual
Exposure Mode: Manual


Basically, the exif data is integer flags rather than string flags.

Kind of like this:
You are given a question with three answers:

What is the sum of 1+1
Answer 1: 1
Answer 2: 2
Answer 3: 3

The answer is Answer 2.

Now, if i asked you:
What is the sum of one plus one:
Answer 1: One
Answer 2:Two
Answer 3: Three

The answer is still Answer 2.

Rather than say M, Tv, Av; partial, evaluative, spot;auto wb, incandescent, fluorescent; the camera will just write 321 for Av with evaluative metering and auto WB.

The problem is, the exif reader needs to convert those values (which are generally covered by some exif or xml standard), and tell you what it means. However, some companies call the same modes different things. Nikon likes linear algebra, canon likes numerical methods. The answer is singular, but it can be said a lot of different ways.


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EXIF Data Question: Metering Mode = "Matrix"
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