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Thread started 20 Nov 2006 (Monday) 08:54
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350D strange behavior

 
mantra
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Nov 20, 2006 08:54 |  #1

Hi

I found a strange behavior of my canon 350D , every time i make a shoot with
Partial 9% at center , i found the photos more dark (lightly) under exposed

did you find the same behavior ? or is a lack of my camera

thanks
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René ­ Damkot
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Nov 20, 2006 08:59 |  #2

What were you metering of? Post a few images...


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mantra
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Nov 20, 2006 09:07 |  #3

René Damkot wrote in post #2288802 (external link)
What were you metering of? Post a few images...

in every photo , for example landascape


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canon 5d markII,24L & 24ts , 35L ,17-40L,24-70L,70-200 2.8ISL,50 1.4,85 1.4 , canon eos 3 ,eos 5 ,t90 , ae program and some very sweet fd lenses
3 analogic Hasselblad and 2 anologic Mamiya

  
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mantra
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Nov 20, 2006 09:11 as a reply to  @ mantra's post |  #4

the second


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3 analogic Hasselblad and 2 anologic Mamiya

  
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René ­ Damkot
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Nov 20, 2006 09:21 |  #5

Bright tree in the middle...
I presume the second is evaluative?
Do some reading on light metering, 18% gray and the zone system. That might help understand what's happening.


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mantra
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Nov 20, 2006 09:53 |  #6

yes the second is evalutative

René Damkot wrote in post #2288871 (external link)
Do some reading on light metering, 18% gray and the zone system. That might help understand what's happening.

sorry i did not understand what have i to do:o :o


canon 5d markII,24L & 24ts , 35L ,17-40L,24-70L,70-200 2.8ISL,50 1.4,85 1.4 , canon eos 3 ,eos 5 ,t90 , ae program and some very sweet fd lenses
3 analogic Hasselblad and 2 anologic Mamiya

  
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René ­ Damkot
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Nov 20, 2006 10:47 |  #7

Do some reading up on what your camera is metering. The light meter essentially presumes the world is 'medium gray': If you take a picture of a black cat in a coalmine, the camera doesn't know it's black, so will produce a gray image. Same for a snowman in the Alps.... That's why it's important to understand what's happening, so you can tell the camera what to do.

Some reading about exposure (external link).

Some reading about the Zone System (external link)


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Nov 20, 2006 10:53 |  #8

The camera meter is very stupid. You can't let the camera meter do your thinking for you. Move the lens around the scene to see what the variation in exposure will be. I usually use matrix metering (which gets it right most of the time). When you know how your meter reacts then you'll be able to control your exposures far more effectively.


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mantra
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Nov 20, 2006 11:30 as a reply to  @ rhys's post |  #9

I would love if a 350D owner could do 2 shoots for me , and compare them


canon 5d markII,24L & 24ts , 35L ,17-40L,24-70L,70-200 2.8ISL,50 1.4,85 1.4 , canon eos 3 ,eos 5 ,t90 , ae program and some very sweet fd lenses
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Nov 21, 2006 00:31 as a reply to  @ mantra's post |  #10

Tested 3 new 350Ds and every 350D i test under expose every time about 1/3

so i think it's normal for the 350


canon 5d markII,24L & 24ts , 35L ,17-40L,24-70L,70-200 2.8ISL,50 1.4,85 1.4 , canon eos 3 ,eos 5 ,t90 , ae program and some very sweet fd lenses
3 analogic Hasselblad and 2 anologic Mamiya

  
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René ­ Damkot
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Nov 21, 2006 02:39 |  #11

Did you all test with a lighter then medium gray tree in the middle of the VF?
My guess would be, that if a dark tree were in the middle of the VF the results might be somewhat different...


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PERSONAL MESSAGING REGARDING SELLING OR BUYING ITEMS WITH MEMBERS WHO HAVE NO POSTS IN FORUMS AND/OR WHO YOU DO NOT KNOW FROM FORUMS IS HEREBY DECLARED STRICTLY STUPID AND YOU WILL GET BURNED.

  
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Nov 21, 2006 02:42 |  #12

"Understanding Exposure" by Bryan Peterson. Probably wouldn't hurt to have a copy.


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mantra
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Nov 21, 2006 04:47 as a reply to  @ cdifoto's post |  #13

i tried 4 new 350Ds in different situation , and every canon 350 in Partial 9% at center under exose about 1/3

in every situation , and every camera (the 4 new 350) gave the same results


canon 5d markII,24L & 24ts , 35L ,17-40L,24-70L,70-200 2.8ISL,50 1.4,85 1.4 , canon eos 3 ,eos 5 ,t90 , ae program and some very sweet fd lenses
3 analogic Hasselblad and 2 anologic Mamiya

  
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StewartR
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Nov 21, 2006 08:41 |  #14

I think photo #1 looks about what I'd expect if it was done with partial metering on the yellow tree. The tree could well be a bit lighter than the standard 18% grey, so the camera has underexposed.

So what's the issue?


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AdamJL
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Nov 22, 2006 05:17 |  #15

mantra wrote in post #2292571 (external link)
Tested 3 new 350Ds and every 350D i test under expose every time about 1/3

so i think it's normal for the 350

Lucky you.. my bloody thing over-exposes by a couple of stops sometimes.
Need to get that checked out.


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350D strange behavior
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