Questions tagged [histogram]

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

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Is the histogram that's shown on a DSLR different from the histogram of the same image shown in Lightroom?

I was taking some images and experimenting with the ETTR approach. I was trying to take pictures with the exposure setting that would have the right end of the histogram just touching the border on ...
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1 vote
1 answer
196 views

How can I compare histograms between a digital image and it’s print

I want to compare color histograms between a digital photo and its physically printed in cloth (like a T-shirt) version. The process is simple: Printing a digital image (with good resolution) in a T-...
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How to Read RawDigger Histogram with EV

I newly have just started to use RawDigger for inspecting raw image quality. However, still I am not too familiar with all its properties/concepts, and I am specifically confused with how to read ...
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Nikon D750 - Histogram while shooting?

Is it possible to view the histogram of a scene either through the viewfinder or in live view prior to releasing the shutter in Nikon D750? I can see it during review - but then need the extra step of ...
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2 votes
2 answers
215 views

Why is my histogram missing the mid tones?

I am shooting wine product images in my new studio using 2x Godox AD200's and 1x AD600Pro, plus 2 x small strip boxes and diffusers etc using Canon 5D mkii and 100mm macro lens. I have shot 12 wines ...
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3 votes
3 answers
267 views

Linear Gradient Histogram

Could someone explain to me in why the histogram of a linear black and white gradient looks as follows? What I do not understand: I was told that humans are more sensitive to darker and lighter ...
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4 votes
1 answer
205 views

What does "normalizing the curve" mean?

A colleague mentioned a course in digital signal processing where he remembered the expression "normalizing the curve" or "normalizing the image" to make it as accurate as possible and get better ...
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2 answers
245 views

How can I cope with a two-peak histogram with one flat and one steep peak? [closed]

See this screenshot: The not-yet-processed image depicts a rural landscape right after sunset. It looks like this: Its parameteres are: Canon EOS 70D + EF 24–105 mm f/4 L IS; ISO 800; 1/13"; f/6.3; ...
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3 answers
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Playback Screen Showing Too Much Information (Histogram Display)

I'm unsure why my playback screen on my Sony a7 III is showing so much information. It's difficult to see the pictures I'm taking because the image shows up so small. I can use the AF-ON button to ...
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3 votes
2 answers
366 views

Is this posterization? How to avoid it when stretching histogram?

Last weekend I took some photos in the mountains, where I can't control the light, nor the movement of the subjects. Some of the photos had very little contrast and brightness, and were a bit ...
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1 vote
2 answers
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Strange behaviour in darktable - image inconsistent

I am using darktable 2.6 on Windows 10. This problem started recently. After importing a raw image, when I change anything (exposure, contrast, etc), the preview temporarily resembles the jpg photo. ...
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2 votes
1 answer
270 views

Is it possible to hide the histogram in Darktable?

In the darkroom section of darktable, the histogram takes up a huge amount of vertical space. Is there any way to hide or move it?
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6 votes
2 answers
1k views

What do truncated histogram spikes indicate? [duplicate]

I teach a class in fine art printing. During my last class we were looking at an image in Lightroom CC Classic and someone asked why the midtone spike in the image histogram exceeded the top limit. It ...
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1 vote
1 answer
631 views

Nikon D500 bracketing wrong exposure preview and histogram

I have a problem with my Nikon D500 (firmware 1.13) I have set up my bracketing to start with underexposed image. I shoot in manual mode. So I turn live view on and set up exposure for first ...
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5 votes
2 answers
902 views

Why doesn't Darktable's histogram match the one my camera shows?

I'm using Darktable 2.4.2 with Canon 6D. The problem is that when I import a raw image, and apply the Canon 6D base curve, the histogram is totally different with respect to the histogram visualized ...
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2 answers
1k views

How to know correct exposure for RAW shooting when camera show JPEG Histogram

I heard that RAW Data is not the rendered data, which means it can’t be influenced by white balance, saturation, and all other settings. I believe that “RAW Data” is influenced by the intensity of ...
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4 votes
4 answers
95 views

When would you bracket a scene, if there's no data clipping?

In live view, if my histogram shows no clipping of darks nor highlights of for example a sunset scene, is there any need to bracket the shot? Shooting in RAW of course :)
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13 votes
2 answers
2k views

Why does the histogram of an image depends on the software that opened it?

If I open a raw image in Photoshop and Paintshop pro their histograms and their look is different. However, if I open a Jpeg image in both Software, then their histogram and look is the same. What ...
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3 answers
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How do I display a histogram in live view on a Nikon D7500?

I just bought the Nikon D7500. I can't find the histogram. How do I get the histogram on my screen? I would like to view it on the live view?
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-3 votes
1 answer
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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 ...
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3 votes
2 answers
573 views

Why are histograms in Entangle and RawTherapee so different?

I've made a photo in Entangle, and then opened it in RawTherapee. When comparing the histograms, I noticed that they are very different. See the screenshot: Here we can see a deep dip in G and B ...
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9 votes
3 answers
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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 ...
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2 votes
4 answers
1k views

How is tonal range of a colored image mapped to a scale of 0-255 in RGB histogram?

RGB histogram (as displayed by Adobe Photoshop) of a colored image maps the available tonal range to a scale of 0-255 (pure black to pure white on horizontal axis). Tonal range, the way I understand, ...
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3 votes
4 answers
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Can I tell which photo has more contrast from their histograms?

for my BA degree I need to find out which one from the following two photos has more contrast: The histogram looks like (left histogram for the left photo, right histogram for the right photo): My ...
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2 votes
1 answer
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How Does A 5D Mk3 Generate The Histogram It Displays In Live View?

What is happening under the hood when a 5D Mk3 displays a histogram (luminance or RGB)? What exactly is the data it uses (raw sensor data, jpeg or something else)?
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2 votes
2 answers
764 views

Black clipping paranoia - rational fear or over critical? [closed]

Whilst I edit my photo's in Lightroom/Photoshop I always seem to keep a very stern eye on the clipping point warnings in the histogram. Even when the warning highlighting (the blue mask in Lightroom ...
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2 votes
2 answers
255 views

How do I read these two Lightroom histograms?

What information can I get from these two images about how a series of photos that shares such a histogram were taken/edited? Both photo series are quite pretty and nostalgic, but I don't get the ...
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2 votes
2 answers
119 views

How can I see the true, non-adaptive histogram for my photograph? [duplicate]

Given that both Lightroom and (as far as I know) Photoshop use adaptive histograms, is there any way to look at my photos using a true histogram? By true I mean showing a true distribution of ...
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3 votes
1 answer
40k views

Why does my Canon Rebel's LCD viewer show a reduced view with small boxes showing colour saturation on the side?

I have a Canon Rebel camera and recently the following problem has occurred: When it is in autofocus and I take a picture, it shows a photo of what I have taken on the left side in a box and then on ...
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7 votes
2 answers
2k views

What Is The Scale Of The Y Axis of The Histogram in Lightroom / ACR?

I understand the concept of histograms. I understand that the x-axis represents the luminosity range from min to max for either all channels or RGB individually, and I understand that the y-axis ...
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0 votes
2 answers
125 views

Lightroom/ACR Histogram Shape

If I open a raw file in ACR or Lightroom and move the exposure slider, why does the shape of the histogram change? If all I'm doing is changing the exposure, I would expect the shape itself to remain ...
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2 votes
2 answers
356 views

What is the color structure histogram and how does it work?

What is the color structure histogram and how does it work
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1 vote
2 answers
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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 ...
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3 votes
3 answers
2k views

How to interpret a histogram to know whether the photo is under or over exposed? [duplicate]

Yes, the books might have been written on this but not being a technical person, I'd like to understand in short and easy to understand language - How to interpret a histogram to know whether the ...
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1 vote
2 answers
920 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 ...
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0 votes
2 answers
170 views

Learning from other photos. Histograms: how do I know if the original photo was over/under exposed? [duplicate]

There is a photographer who shoots mostly indoors with natural light (no soft box) but sometimes he also shows outdoors photos in natural light conditions. His site is at http://www.minimallyminimal....
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6 votes
2 answers
4k views

Is there a way to automatically make the histogram of an image match another image?

Is histogram matching used in real-life photo editing ? Lets say, I have 2 images and I want the first to have histogram of second. And is there any software, that can do this?
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1 vote
2 answers
1k views

What does it mean when an RGB histogram and luminance histogram look similar?

What does it mean when both RGB histogram and luminance histogram look similar? Please explain in detali.
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17 votes
5 answers
1k 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 ...
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  • 168k
5 votes
2 answers
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 ...
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2 votes
3 answers
1k views

How do I judge correct White Balance?

Which photo has the more correct White Balance? For me the second is much better than the first. My understanding is that the R+G+B histogram needs to be as balanced as possible. Is this true, or does ...
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15 votes
2 answers
3k 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 ...
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10 votes
4 answers
917 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 ...
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3 votes
1 answer
668 views

Is it possible to get the Histogram display in Lightroom to only consider the area selected by your cropping?

I've noticed that when I crop a photo, the histogram does not change. If I am then making changes based on the histogram (ie. exposure, fill light, blacks, etc...), it would seem to me that the ...
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16 votes
4 answers
1k 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 ...
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15 votes
4 answers
2k 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 ...
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  • 8,087
4 votes
3 answers
988 views

Since I can't get a light meter reading in the Canon EOS utility on manual, what should I do instead?

I've made a giant copy stand using an artist easel that slides up and down. It's working great, and after help on here I've decided to shoot my artwork archive project on manual (M) setting while ...
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  • 119
10 votes
2 answers
3k views

Is there an easy way to select by histogram range in GIMP?

The other day I was wondering if there is an easy way in GIMP to choose the pixels that are part of a selected range on the histogram.
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  • 203
14 votes
4 answers
7k 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 ...
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26 votes
3 answers
11k views

What is Universal White Balance (UniWB)?

How and in what kind of situations should it be used?
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