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In photography the histogram is a visual representation of the distribution of the tones in a photograph.

learn more… | top users | synonyms

86
votes
6answers
4k 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, ...
21
votes
3answers
7k views

What is Universal White Balance (UniWB)?

How and in what kind of situations should it be used?
11
votes
4answers
560 views

If my histogram shows nothing at the ends of the scale, does it mean the dynamic range of my camera isn't reached?

If my histogram spikes in the middle and evens out pretty much evenly but not completely to the ends (0 & 255), does this just mean that my scene doesn't have the deep shadows or brightest ...
12
votes
2answers
1k views

How do I interpret individual colors on RGB histogram?

I know how to read the Luminosity histogram and I thought that I knew how to read RGB histogram as well, until I saw the following example: The RGB histogram shows exactly the same 3 'spikes'. What ...
16
votes
4answers
889 views

How does histogram shape affect the aesthetics of a picture?

For having more contrast in an image, it's good to have a wide range (i.e. difference between highest and lowest) of light intensities in a picture; and for keeping details, neither highlights nor ...
1
vote
2answers
139 views

How do I tell if an image is exposed correctly when I can't trust the LCD? [duplicate]

I used exposure compensation when I take my shots and adjust it whenever it needs adjustments. Most of the time I shoot using Manual mode. My problem is, when I'm out on a sunny day I can't judge ...
14
votes
4answers
1k views

Why should I use the Zone System when the histogram gives me all the information I need?

DSLR cameras, by and large, give very complete information about how the photo is exposed, in the form of a histogram and image of a trial exposure. It shows the light distribution for both luminance ...
13
votes
2answers
349 views

How can I use a histogram to expose correctly when the scene is very dark?

If I am photographing a scene with a lot of dark background, how can I use the histogram to tell if the exposure is correct? For instance, at an outdoor concert in which the performers are moderately ...
11
votes
4answers
2k views

What does it mean if the main peak of my Histogram is beyond the top of the chart?

I tried reading this thread about histograms, but couldn't understand it well enough to answer this question. I took some shots yesterday where the main peak of my Histogram was actually off the ...
1
vote
2answers
233 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 ...