Spring 2012

Spring 2012
by ani

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Questions about how to choose the correct colour balance for a given scene, and how it affects photos.

learn more… | top users | synonyms (2)

4
votes
2answers
2k views

How does Aperture 3 set the default White Balance when developing a RAW file?

I already learned that on raw images no white balance transformation has been applied yet. 1) If Aperture develops the preview images (without manually setting the WB by the user) it has to decide ...
4
votes
1answer
267 views

Are scene modes, white balance, color tones, and similar just post-processing effects?

What happens when the following settings are changed: White balance Color tones Scene modes Are these parameters affect the way in which the photo is taken or they are just applied by processing ...
4
votes
1answer
681 views

Does this sunrise photograph have a problem with white balance?

I find this scene "all" "Orangey". The trees are also looking a kind Orangey. Is the colour balance wrong? Or it is normal for a sunrise scene? http://1x.com/forum/bookmarked/32030/critique-on-photo-...
2
votes
1answer
265 views

Why is there a colour cast when using an incorrect white balance?

I understand what colour balance is and how it is meant to be used. However I don't fully understand why we see what we see if an incorrect White Balance is used. If for example we take a photo out ...
2
votes
0answers
133 views

How to get correct white balance with different types of light sources? [duplicate]

Possible Duplicate: How do I properly white-balance my photographs when I'm shooting in mixed-lighting environments? I was at a wedding recently, and the reception hall had these huge ...
2
votes
2answers
98 views

What should I do with negative values when computing sRGB colors from spectra?

This question is from the computational side of things. Maybe some of you computational photography folks can help me out. If I have a normalized CIE XYZ tristimulus vector like this one: (x, y, z) ...
2
votes
6answers
1k views

How does the gray level in a target impact the true color after calibration

I'm trying to learn how to take photos that are color accurate. I'm testing on a newly painted wall in my kitchen, and has a biege paint with some green tone. http://www.flickr.com/photos/...
2
votes
1answer
465 views

Does Lightroom export white-balance temperature and tint value to JPEG metadata?

When I export a JPEG from Lightroom 3.6, is the white-balance temperature and tint value written in the JPEG file somewhere? Could I later take that JPEG and see (in the EXIF for example) what the WB ...
1
vote
3answers
1k views

Why does using the flash mess up the white balance?

When I take a photo without flash, I get reasonable white-balance: But when I turn on the flash, everything becomes yellow, which is not how the scene looks to the naked eye: Why does this ...
1
vote
3answers
150 views

What is the “right” displayed color?

Taking in consideration the web environment only, not screen-to-print jobs, let's suppose that we have a font color e.g. #f1ecd6 Hex, displayed by a LCD, properly—by a hardware device—calibrated, ...
1
vote
2answers
761 views

What is the math behind white-balance, and how to choose it?

Given a bad balanced RGB image (in terms of white balance), how can I choose the proper color balance that needs to be applyed (as a RGB vector where 128,128,128 is the neutral)? Same question for a ...
1
vote
4answers
597 views

Will LEDs work with a point & shoot camera for light booth digital photography?

I am planning on using multiple strips of LEDs to light up a 2 ft x 2 ft x 2 ft light booth for taking pictures of small items. LED output is Cool White 6500k. Digital camera is low cost 5 megapixel ...