Daisy - center weight vs. matrix metering

Joined
May 5, 2005
Messages
733
Location
Sydney Australia
The obligatory square dead set center composition... boring stuff :wink:

Thought I'd share the difference between center weighted metering vs. matrix metering. Taken using D70 and 105mm micro. The center of the flower is about 1 cm in diameter, these are full height crop of landscape original (2000 px) resized for web.

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Exposure time : 0.020 s (1/50)
Aperture : f/4.2
Whitebalance : Cloudy (-2)
Metering Mode : center weight
Flash used : No

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Exposure time: 0.0063 s (1/160)
Aperture : f/4.5
Whitebalance : Cloudy (-2)
Metering Mode : matrix
Flash used : No


Regards,
Jonathan
 
Joined
Jan 26, 2005
Messages
978
Location
Viera Fl
Well Jonathan thank you for that.

Boy nice to really see the difference. No guessing here. Center weight wins and it is beautiful

Great job.
 
Joined
Jan 25, 2005
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994
Location
Alabama
Jonathan,

I agree that the C-W is exposed better, but I disagree that either is boring.... :lol:

Very nice compositions. :wink:
 
Joined
May 5, 2005
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Location
Sydney Australia
Thanks everyone for your feedback.

I prefer the center weight version too, the blown highlight gives the purple fringes an added edge... by accident rather than by design... :wink:

Regards,
Jonathan
 
Joined
May 1, 2005
Messages
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Location
THOUSAND OAKS, CALIF.
Hi Jonathan, I hope you don't mind but I think if you take your second shot an add some brightness and contrast in Photoshop you will see that both will look identical and it might even be a slight bit sharper. I tried it because I wanted to see the difference between center and matrix on a close-up.
Pete
 
Joined
Jan 29, 2005
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St. George, Utah
I'm assuming that both were processed the same. Obviously the matrix metering took into account the white petals and decreased the exposure. The center weighted with no white petals to consider increased the exposure because of the dark center of the flower. Both could be manipulated in PS to achieve the same exposure as Pete has pointed out. The real secret is in knowing what to expect and shooting accordingly. Personally I prefer using center weighted or spot for most individual subject exposures and matrix for scenes.

Thanks for sharing your experiment.
 
Joined
Jan 26, 2005
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Viera Fl
Thank for that to Gordon,

The more explanations I can find the better for me.

Most appreciated.

I would prefer out of camera than in post.
 
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May 5, 2005
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Location
Sydney Australia
greyflash said:
I'm assuming that both were processed the same. Obviously the matrix metering took into account the white petals and decreased the exposure. The center weighted with no white petals to consider increased the exposure because of the dark center of the flower. Both could be manipulated in PS to achieve the same exposure as Pete has pointed out. The real secret is in knowing what to expect and shooting accordingly. Personally I prefer using center weighted or spot for most individual subject exposures and matrix for scenes.

Thanks for sharing your experiment.
Hi Gordon,

Agreed. If both were post processed to be exactly the same, then there is nothing to be shared here... :wink:.

I use spot metering actually most of the time, probably because I don't do extreme closely (subject does not cover the entire frame), and I like the effect of the darken backdrop with the subject isolated but correctly exposed. Of course you need to make sure that the backdrop is darker to start with, I usually change my viewpoint until I get the right backdrop.

Here is an example with spot metering:
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But I agree with Pete that the second is slightly sharper (the first was 1/50s), and I could achieve the result of the first by post processing. As to using the same exposure but with center weight vs. matrix, I am assuming the result would be pretty much the same and not much difference to write home about.

Thanks again for all your feedback.

Regards,
Jonathan
 
G

GreenCoal

Guest
Thanks Jonathan for sharing and to all for good discussion! Always something new to learn here.

Like the subtle colors on the last one with the profile view.
 
Joined
May 3, 2005
Messages
3,925
Location
Owings Mills, MD
Wow, this is a really great discussion. Now I can really see the difference. Thank you for sharing and defining the differences in metering.
 
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