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What is Histogram in Photography?

What is Histogram in Photography?

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Rating: 4.0; Vote: 1
I'll explain the concept of the histogram using Photoshop. Keep in mind that this is just for illustration purposes. The histogram can be used in any photo editing application including your camera. Looking up at the definition of the histogram is not enough, you need to understand what the origin of a Histogram is. The most fundamental concept on which histogram is built is pixel and luminosity. That's it! A histogram just represents these two data, the number of pixels and how bright or dark the pixel is. To simplify it, the histogram is nothing but a graph that shows how many pixels are dark, how many are bright and how many fall under mid-tones. On the horizontal axis or x-axis, it shows you the brightness. On the vertical axis or y-axis, it shows you the number of pixels in that particular brightness level. So, for example, if an image has a lot of bright skies and blue ocean, the histogram will incline towards the right. On the other hand, if your image is a night shot, the histogram will incline towards the left. Besides this, the most essential feature and purpose of the histogram is to show limits. A histogram is not endless. It has limits on both the sides. What do these limits mean? Well, a screen can show a fixed range of light. It can never be as bright as the sun or as dark as outer space. The histogram shows you the range of light that a screen can represent. Any pixel beyond those limits will be shown either completely black or completely white and will have no details. Now, the camera can see more than a screen can and hence using the histogram, our purpose is to bring the graph within the limit. For the second part, I'll use Lightroom to demonstrate how to bring the graph inside the safe area
Date: 2022-07-19

Comments and reviews: 14


Hey! Unmesh You are excellent as usual. ymYou must be science student and a self taught, self learner as a self taught person can only knew so much of miniature details & understanding.
And you are a great teacher as you connect the this world of Photoshop to any another world of science, human nature, to nature to existence.
By the way you didn't finished histogram completely as I'm curious to know
1) What the the graph (red, blue, yellow etc) stands for in (histogram?
2) and can we get perfection & desired result by stretching/shrinking histogram?
(as a curious soul I played with histogram.
Thanx

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Ive been trying to understand histogram for sometime now but never can as everyone tells you keep your histogram looking like this and that but no one ever explain why. I think maybe they dont know why and was just following others like sheep.
Thank you for explaining histogram. I finally got it when you described the eyes limitations with seeing the levels of black and white. Now I feel I can use histogram in camera with confidence.
Thanks again
Pete

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Wow, you have really travelled through a journey of growth, i never imagined you one produced bad quality videos, i thought it was all Gucci for for you but i can see that everyone can grow if they stay consistent. what you are producing lately is incomparable, your contribution cannever be underestimated. Thankyou for the love
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Excellent explantation - thank you! It would be great to group some of your tutorials for beginners as this is really important to understand at the start of learning PS. Also, as a new person to PS is it important to also learn Lightroom? It seems PS covers most of the tools Lightroom offers? As always, thank you so much: -)
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Any chance of doing a video on astrophotography editing? We all stack photos in Deep sky stacker then finish off in photoshop or similair program, would be nice to see how to get the black perfect and nebula colours being really vibrant. Thanks
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i think him not being a scholar of grammatical english is actually a blessing for teaching, his words and sentences are really simple and super understable.
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Thank you so much for this tutorial. I was just thinking I should to know some details about histogram and your video showed me up randomly: )
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I've been doing photography for 4+ years and you taught me so much about histograms I didn't know. I'm so humbled. Thank you!
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this was so concise that a foreigner with 50% English would have comprehended it, as always you delivered as expected.
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I couldn't say how I adore this guy. All the tutorials are really helpful, especially for the novices. I'll stay tuned.
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that was a great explanation of the histogram. thank you. Very good at teaching, keep the videos coming pls.
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Your videos are very knowledgeable but please make ir t shorter so that we can watch without getting bored.
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I was watching the video in full screen and at 8: 50 I just got hang like adobe premiere in 1gb ram laptop.
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I suck at drawing. You are so funny. nice tutorials. I never saw someone so concise and patient. thank you
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