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Thread started 09 Feb 2012 (Thursday) 09:32
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The 7D metering Sucks at snow

 
Lowner
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Feb 10, 2012 13:17 |  #76

Matty,

It looks spot-on to me. Any more exposure would have been wrong. Even histograms must be understood and not followed "blindly".


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Bosscat
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Feb 10, 2012 13:18 as a reply to  @ post 13863041 |  #77

I honestly do not for the life of me understand why shooting in the snow baffles so many people, but I underexposed these both by 2/3rds and the second one could almost stand a full stop IMO.

Maybe it worked cause I used one of them cheapo 40D's?


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K6AZ
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Feb 10, 2012 13:30 |  #78

Learning to meter in snow is pretty easy. I can't believe asking for a snow mode unless it's in a P&S or an entry level DSLR.


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Feb 10, 2012 13:37 |  #79

Well the most redeeming thing about this thread is getting to view some great snow scenes.


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Feb 10, 2012 13:46 |  #80

windpig wrote in post #13863354 (external link)
Well the most redeeming thing about this thread is getting to view some great snow scenes.

Quite true. The way this winter's going, here in Northern Virginia we may not see more than a dusting all winter long.  :p


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Feb 10, 2012 13:59 |  #81

IMO the image by mattymx is about perfect; this is contrary to what Xcelx states about it being underexposed by 2/3 stop. One thing that can be done for improving white balance is to sett to 6500 Kelvin (as I previously mentioned) of just set to "flash" instead of the automatic setting. Since flash has slightly blue lighting, this will warm up the image just slightly. Snow is very slightly blue so scenes that are stark white are unnatural. Mattymx has pulled in in quite nicely, and the use of the CPL has also rendered the sky quite well to boot!




  
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Feb 10, 2012 14:15 |  #82

With all this talk and the fact that it is snowing rather hard currently, I decided to go and check out my metering. It appears correct to what was in the view finder at the time and the current conditions.

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Feb 10, 2012 14:19 |  #83

Chet wrote in post #13863604 (external link)
With all this talk and the fact that it is snowing rather hard currently, I decided to go and check out my metering. It appears correct to what was in the view finder at the time and the current conditions.

Looks like perfect exposure from here. :lol:


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Feb 10, 2012 14:20 |  #84

stsva wrote in post #13863626 (external link)
Looks like perfect exposure from here. :lol:

Thanks for checking as I'm working on a non calibrated screen.


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Feb 10, 2012 14:27 |  #85

Chet wrote in post #13863632 (external link)
Thanks for checking as I'm working on a non calibrated screen.

It's always best to get confirmation.


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Feb 10, 2012 14:30 |  #86

stsva wrote in post #13863414 (external link)
Quite true. The way this winter's going, here in Northern Virginia we may not see more than a dusting all winter long.  :p

We haven't seen a single snowflake this year after several years of 24" plus. Don't need to worry about snow metering this year.


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Feb 10, 2012 15:22 |  #87

I think Canon would be better off adding a small speaker with a file that asks (in a stern voice)

"HEY! DID YOU EVEN BOTHER READING THE MANUAL WHEN YOU BOUGHT THIS CAMERA? GEEEEZ!!!"

At least that one file would cover all the wrong settings rather than creating a lot of wasted settings!


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stayhumble
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Feb 17, 2012 10:33 |  #88
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daamn this guy got grilled sooo hard and never came back...poor dude.

but yeah, if you are asking for "snow mode" on a 7D you should really stop focusing on nice cameras and lenses and go back to basics. CIRCULAR POLARIZER!!!


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kcbrown
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Feb 17, 2012 15:54 |  #89

Actually, I find it rather amusing that people here are being somewhat critical of the OP's surprise that evaluative metering mode isn't getting the exposure right. Very amusing, actually. Some then go on to describe how metering works, but fail to account for the fact that it is evaluative metering mode that is in play here.

Evaluative metering mode is the "magic" metering mode. As the Wikipedia article (external link) on metering modes explains, "The design concept behind multi-zone is to reduce the need to use exposure compensation."

The whole point behind evaluative metering mode is that the camera is supposed to get the exposure right regardless of the characteristics of the scene. Exposure compensation is there in order to allow the photographer to properly deal with the mode's failings.

The very nature of the mode make it somewhat unpredictable between camera models. Later generation models tend to be better about getting the exposure right than are earlier models. Manufacturers continuously tweak the capabilities of the metering system in order to make it more accurate and flexible over time. As a result, explanations about how evaluative metering mode works are of necessity automatically dated. Future implementations will almost certainly behave differently, in that they will have fewer exceptions that require the use of exposure compensation.

If you want predictability from your metering system, evaluative is most certainly not the metering mode to use, unless you're willing to do a great deal of experimentation to learn exactly how and when the metering system fails, and to throw away all that and start anew when you switch cameras. Rather, use something that is designed to be predictable, such as center weighted average, partial, or spot metering. It would be nice if Canon gave us a straight-up averaging mode, or one that merely averaged and gave a specific and consistent amount of weight to the active autofocus point, but evaluative is not that.

The bottom line is that it's a bit laughable to criticize someone for complaining about the "magic metering mode" when the "magic" doesn't work.


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Feb 17, 2012 17:46 |  #90

Chet wrote in post #13863604 (external link)
With all this talk and the fact that it is snowing rather hard currently, I decided to go and check out my metering. It appears correct to what was in the view finder at the time and the current conditions.

QUOTED IMAGE


I think you are trying to pull a snow job on us, that is obviously photoshopped! :lol:




  
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The 7D metering Sucks at snow
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