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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 30 Jan 2007 (Tuesday) 09:04
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Custom White Balance question

 
Midlife ­ Crisis
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77 posts
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Location: Michigan
     
Jan 30, 2007 09:04 |  #1

I have been having a hard time getting consistant white balance results using my 30D inside our church on the stage. 3 times a month I will take pictures on the same stage, same lighting using either RAW or Jpegs and everytime the white balance is different. In the past I tried using the manual color temperature setting for all and it still comes out different.

To get consistant results I am thinking that I'll need to snap a picture of a grey/white paper, use that as the white balance, protect it in the card, and use it the following week. Sound right?

Another question I have is if it is possible when I use the Custom White Balance setting with a pic of a white/grey piece of paper can I find out what the actual color temp that the camera used? I use DPP and PS 6.

Any thoughts and thanks in advance...


30D
17-55 IS
70-200 f2.8 IS
Leica M3 :p

  
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René ­ Damkot
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Jan 30, 2007 09:47 |  #2

Midlife Crisis wrote in post #2625296 (external link)
I have been having a hard time getting consistant white balance results using my 30D inside our church on the stage. 3 times a month I will take pictures on the same stage, same lighting using either RAW or Jpegs and everytime the white balance is different. 1) In the past I tried using the manual color temperature setting for all and it still comes out different.

2)To get consistant results I am thinking that I'll need to snap a picture of a grey/white paper, use that as the white balance, protect it in the card, and use it the following week. Sound right?

3)Another question I have is if it is possible when I use the Custom White Balance setting with a pic of a white/grey piece of paper can I find out what the actual color temp that the camera used? I use DPP and PS 6.

Any thoughts and thanks in advance...

1) What lighting? If flurescant tubes, that is bound to happen, since they 'shift color' as the mains cycle (50 or 60Hz depending on where you are). IIRC solution is to use a slower shutterspeed.
2) Not if light changes from week to week (FI when daylight mixes with ambient: Different time of day or different weather = different mix) In that case your best bet might be to make a CWB every time.
Also, be aware that if light isn't constant throughout the entire venue, you'ld need a few CWB's... RAW would be easier.
3) Not in DPP. ACR for instance does show the color temp when you use the 'eyedropper'.


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Midlife ­ Crisis
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Jan 30, 2007 10:30 |  #3

Thanks for your answer Rene.
The stage has strong spotlight tungsten lighting. The light from the windows don't really come into play much as far as the white balance problem. I realize the spotlights will have different temps throughout the stage but even if I manually set the color temp in the camera (around 3700) there is a drastic change from one week to the next even on the same spot on the stage.


30D
17-55 IS
70-200 f2.8 IS
Leica M3 :p

  
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René ­ Damkot
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Jan 30, 2007 10:51 |  #4

Maybe the spots are dimmed? That would cause them to become warmer in color.
That being said: Why not use the tungsten ('lightbulb') setting for WB?
Either that or K=3200 works fine for me...
Have a read here (external link).


"I think the idea of art kills creativity" - Douglas Adams
Why Color Management.
Color Problems? Click here.
MySpace (external link)
Get Colormanaged (external link)
Twitter (external link)
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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Midlife ­ Crisis
THREAD ­ STARTER
Member
77 posts
Joined Nov 2006
Location: Michigan
     
Jan 30, 2007 11:07 |  #5

Thanks for the link. In DPP while I shot RAW I changed the color temp setting using the various temps and determined that around 3700 is the best. In the background are panels of wood that when in person are brown but were more red when the color temp was off.


30D
17-55 IS
70-200 f2.8 IS
Leica M3 :p

  
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Custom White Balance question
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