Linked Questions

120
votes
7answers
9k views

How and why do you use an image histogram?

I realize that an image histogram is a graphical display of an images tonal distribution (i.e. horizontal darks to lights, vertical pixel distribution), but how does one really use it and why? I mean, ...
28
votes
6answers
5k views

If shooting RAW, is the white balance selected in camera irrelevant for exposure?

I have read the existing question - Does the camera white balance setting affect the raw image at all? After reading the above post, I am still not clear on the part around exposure. Is it possible ...
30
votes
3answers
4k views

What is the meaning of "white balance"?

I would like to understand the term white balance. My camera has settings for white balance with the following options: Auto white balance Daylight Cloudy Shade Flash Incandescent lights White set1 / ...
4
votes
4answers
4k views

How to make camera LCD show true RAW data in JPG preview and histogram?

With Canon 650D (and presumably all the other Canon), I noticed that the picture style and full JPG processing is used to generate a review JPEG which is what the camera actually reads when reviewing ...
9
votes
3answers
2k views

Why don't cameras show an "accurate" histogram?

Why don't cameras show a histogram based on the RAW data rather than on the JPG preview? I know that a RAW file is not a viewable image and can't be displayed without applying curves and defining how ...
9
votes
2answers
1k views

How to determine optimal color correction filters for a sensor?

Originally, this question was titled: How to detemine native color temperature of a sensor? For questions about warming filters and color filters in general, leading answers indicate that for optimal ...
5
votes
2answers
1k views

How to avoid overexposing image using RGB histogram when shooting RAW and using different Picture Controls?

Since the histogram is computed from JPEG that is burned into RAW file using Picture Control (PC), how can one actualy rely on it? How precise is it when PC is set to Neutral? Simple test: Make 2 RAW ...
2
votes
3answers
426 views

How often do I need to recalibrate using a ColorChecker?

So I'm picking up a ColorChecker. Partly because I'd like to have more accurate colors and (let's be honest) partly out of curiosity and boredom. My question is: I understand that colors should ...
1
vote
2answers
872 views

How do histograms handle highlight and shadow clipping?

My camera shows a histogram in the preview: And after I take the photo: I shoot RAW, but as I understand it, the histogram is computed from JPEG, so it might indicate that the highlights and/or ...
2
votes
4answers
202 views

Why can't I set a black object as the sample when setting custom white balance?

If I set black color as a sample in the custom white balance and then take a picture.The picture has a shade of green color. could you please tell me why?
-3
votes
1answer
283 views

Why no raw channel histograms? [duplicate]

I understand the basic logic of providing histograms of JPEGs. The sensor pixel values get combined, processed, interpreted as a color, then broken out into new RGB values. So, if you were to give the ...