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White Balance
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Sep 24, 2013 06:40:54   #
jerryc41 Loc: Catskill Mts of NY
 
nekon wrote:
White balance

The Idea of this exercise is to make you aware of the accuracy of the camera's white balance Pre-sets. By the time the assignment is over, you will know what objects look like under each lighting condition, and how the pre-sets alter and correct deviations.

Things you'll need:

• A movable object /objects,of various colours
• Lighting conditions to match White balance pre-sets
• Notebook/pen/pencil

1. Direct Sunlight- Set camera to 100 ISO, Daylight pre-set, Take shot
2. Switch to Auto White balance-take a shot
3. Object(s) in open shade-Shade/cloudy pre-set-take shot
4. Switch to AWB-take shot
5. Switch to Daylight-take shot
6. Object(s) under tungsten lighting-Tungsten/incandescant pre-set-take shot
7. switch to AWB-take shot
8. Switch to daylight-take shot
9. Objec(s) under fluorescent lighting-fluorescent pre-set-take shot
10. Switch to AWB-take shot
Note what happened when image was adjusted, was adjustment correct?
White balance br br The Idea of this exercise is ... (show quote)

I do lots of comparisons like this, but one bit of advice. Even though you're using a notebook, shoot different scenes for each test. I used to set the camera on a tripod and shoot lots of different images with different settings. I found it too difficult to keep track of which was which when I looked at them later.

What I do now is make a note: "lake - ND filter" Now I know that the lake shot was testing an ND filter.

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Sep 24, 2013 07:23:19   #
crimesc324 Loc: West Palm Beach, Florida
 
lorim222315 wrote:
How do you shoot your white balance? Custom, auto, manual, or does anyone use the Kelvin scale?


Usually auto but lately switched to cloudy to warm the pictures up a bit

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Sep 24, 2013 07:31:50   #
BboH Loc: s of 2/21, Ellicott City, MD
 
I use Kelvin 98% of the time. Have a cheat-sheet that I have clipped to the strap ring that has the settings for various ambient lighting. After I set the Kelvin, I shoot something Red and if the LCD image matches to object, my WB is OK, if not I fine-tune. I have Nikon cameras

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Sep 24, 2013 08:23:38   #
Flipper2012 Loc: Alberta, Canada
 
nekon wrote:
White balance

Where, with film you either shot print film in daylight or with flash indoors, and with slide film, you used daylight or tungsten film, or used compensating filters with these. White balance is Digital’s version-you select a white balance based on the condition of the light you are using, so the camera’s meter allows for white to photograph as white
Auto white balance does a reasonable job most of the time, but it cannot cope in some situations-especially when subject is in deep shadow. You need to know when to use the white balance settings for all situations, and this table will help you understand: ( degrees Kelvin is a means of determining colour temperature)

Sunrise/sunset 2400-3000 Kelvin……………………Use Auto white balance
Tungsten lighting 3200-3500 Kelvin Note…( these settings are for studio white balance for tungsten-Use tungsten/Incandescent white balance) For Domestic tungsten lighting-2500 - 3200-you will generally get better results using auto white balance
Fluorescent lighting 4000 Kelvin …………… Use fluorescent White balance
Early morning/afternoon sun 4000 Kelvin…….Use auto white balance/ --fluorescent white balance
(Magenta filter) to counter greenish cast on skin from foliage if under trees or on really green grass
Noon sun/Sun overhead…5000-6500 Kelvin…………………….use Cloudy White balance
Flash photography in daylight 5500 Kelvin ………………………Use Flash White balance
Deep shade………………….6500 Kelvin…………………………Use cloudy/shade white balance
Shade in daylight 7500 Kelvin ………………………………......Use shade white balance
Heavy overcast, very dark shade 8000 to 10000 Kelvin………Use shade white balance plus 81a-85c glass filter

To set custom White balance: (Nikon)-Sorry I only know Nikon's method

Select a neutral coloured object to set your white balance
It’s best to avoid using a white target. The camera prefers grey.( Print yourself a grey card: In photoshop- File> New
Click on background square in toolbox
select: red 127; green 127; blue 127 from color chart- Print)


In white balance menu select "Custom"> "Preset"
select "measure"
Press shutter release halfway to return to shooting mode
press wb button until a blinking "Pre" appears in control panel and viewfinder
frame reference (grey card) so it fills the frame
and press shutter release all the way down (Camera won't take picture)
If camera was able to register a value for white balance "Good" will flash in control panel and GD will flash in viewfinder
If lighting is too dark or bright "no g d" will flash in viewfinder and control panel


If you use white in direct sunlight you'll always get a "No Gd" response from the camera because the Matrix meter is rendering it white instead of grey. Thus the trick is to select the centre-weighted meter when using a white reference in bright light and you'll get "Good" from a camera. Remember to set back to Matrix metering as soon as you're done.






Towards Perfect Colour Balance

The Idea of this exercise is to make you aware of the accuracy of the camera's white balance Pre-sets. By the time the assignment is over, you will know what objects look like under each lighting condition, and how the pre-sets alter and correct deviations.

Things you'll need:

• A movable object /objects,of various colours
• Lighting conditions to match White balance pre-sets
• Notebook/pen/pencil



1. Direct Sunlight- Set camera to 100 ISO, Daylight pre-set, Take shot
2. Switch to Auto White balance-take a shot
3. Object(s) in open shade-Shade/cloudy pre-set-take shot
4. Switch to AWB-take shot
5. Switch to Daylight-take shot
6. Object(s) under tungsten lighting-Tungsten/incandescant pre-set-take shot
7. switch to AWB-take shot
8. Switch to daylight-take shot
9. Objec(s) under fluorescent lighting-fluorescent pre-set-take shot
10. Switch to AWB-take shot
11. Switch to daylight-take shot
12. Object(s) under cloudy lighting-cloudy pre-set-take shot
13. switch to AWB-take shot
14. switch to daylight-take shot
15. Object(s) ready for flash lighting-flash pre-set-take shot
16. Switch to AWB-take shot
17. Switch to Daylight-take shot
18. Object(s) under window light-Shade pre-set-take shot
19. Switch to AWB-take shot
20. Switch to daylight-take shot
21. Object(s) under overcast lighting-shade pre-set-take shot
22. Switch to AWB-take shot
23. Switch to daylight-take shot
24. Object(s) ready for open bulb lighting-flash pre-set-take shot
25. Switch toAWB=take shot; then Daylight-take shot
In your imaging Program, see how the object(s) look(s) in each pre-set,and the differences switching pre-sets made to your object(s).
Note what happened when image was adjusted, was adjustment correct?
White balance br br Where, with film you either s... (show quote)

Very good post for those needing this. It was a lot of work on your part and should be very helpful for all that require this.

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Sep 24, 2013 08:53:52   #
nekon Loc: Carterton, New Zealand
 
Flipper2012 wrote:
Very good post for those needing this. It was a lot of work on your part and should be very helpful for all that require this.




Yes, it depends on how exact you want to be, the less post processing for me, the better-if you nail both exposure and white balance, noise never becomes a problem. Although this exercise appears complex, once mastered it becomes second nature

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Sep 24, 2013 09:20:28   #
bigwolf40 Loc: Effort, Pa.
 
I tried what Bryan Peterson said in is video which was set it on cloudy and forget it. I wasn't quite sure but I tried it and really like the results. I do most of my shooting out doors....Rich

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Sep 24, 2013 09:33:58   #
nascar27 Loc: Kansas City, MO
 
lorim222315 wrote:
How do you shoot your white balance? Custom, auto, manual, or does anyone use the Kelvin scale?


Currently about half auto & half manual. I always tweek in PP afterwards. 8-)

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Sep 24, 2013 09:40:20   #
idrabefi Loc: Michigan
 
Normally change to whatever environment I'm in (i.e., sun, cloudy, shade, etc.) unless I really want to be tack on. Then, white card is used. It's small, easy, and takes about 1 minute. Never unhappy with results.

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Sep 24, 2013 09:40:49   #
BermBuster Loc: Hi Desert S.Cal
 
nekon wrote:
White balance

Where, with film you either shot print film in daylight or with flash indoors, and with slide film, you used daylight or tungsten film, or used compensating filters with these. ................


Thanks for the info -
Having never learned the 'Film Side', I can see how Digital made things "easy". I think this will help me explain White balance to someone who isn't 'getting it'... Thanks again-Great Job!

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Sep 24, 2013 10:00:33   #
michaelgem
 
bigwolf40 wrote:
I tried what Bryan Peterson said in is video which was set it on cloudy and forget it. I wasn't quite sure but I tried it and really like the results. I do most of my shooting out doors....Rich


Using auto WB vs setting on cloudy accomplishes two different goals.

Bryan likes his shots a little warmer. The cloudy setting is a cooler higher color temperature setting than 5000K noon daylight, so shots taken in noon daylight come out warmer looking. Shots in late afternoon or at sunset come out richly warm.

On the other hand, the auto WB setting, if it does its job as intended, will give the same neutral color balance result in noon daylight, cooler cloudy lighting, late afternoon or sunset.

Auto white balance acts like your eyes which adjust your color perception so that white or gray appears white or gray under cool/bluish skys, noon/neutral daylight, or warm/yellowish late afternoon sun.

If your desired result is for the shot in late afternoon to have that golden glow, leaving the setting on cloudy will accomplish that different goal.

Michael

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Sep 24, 2013 10:40:02   #
planepics Loc: St. Louis burbs, but originally Chicago burbs
 
LoneRangeFinder wrote:
I do all of the above depending on the situation. On rare occasion, I use the Kelvin scale which gets me pretty close.

I have a few custom "pre-sets" that I return to. Usually I do auto.


I've never tried the Kelvin scale, but I think I remember seeing that my new A77 has the ability to choose it. I have been using auto and it usually turns out. I don't own (or have ever used) a grey card.

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Sep 24, 2013 12:02:15   #
bigwolf40 Loc: Effort, Pa.
 
michael maybe I like it because I'm just a very warm person.LOL...Rich

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Sep 24, 2013 12:09:49   #
chapjohn Loc: Tigard, Oregon
 
When outside I almost always use cloudy WB.

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Sep 24, 2013 12:12:37   #
jeep_daddy Loc: Prescott AZ
 
lorim222315 wrote:
How do you shoot your white balance? Custom, auto, manual, or does anyone use the Kelvin scale?


I use 5500K for most sunny day wildlife and Auto W/B for most everything else. If I have mixed lighting indoors and if I remember to bring my grey card, I create a Custom W/B. I'm going to purchase one of these soon.

http://www.amazon.com/X-Rite-MSCCPP-ColorChecker-Passport/dp/B002NU5UW8/ref=sr_1_1?ie=UTF8&qid=1380038671&sr=8-1&keywords=colorchecker+passport

or I might try one of these if I used Picasa:

http://www.amazon.com/CameraTrax-24ColorCard-3x5-OneSnapColor-Balance-Guidebook/dp/B005IUBU2O/ref=sr_1_4?ie=UTF8&qid=1380038671&sr=8-4&keywords=colorchecker+passport

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Sep 24, 2013 12:14:48   #
Photographer Jim Loc: Rio Vista, CA
 
I have an ExpoDisc, so I often use custom white balance.

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