Exposure / Learn by doing
Histogram explained simply
What is “Histogram”?
A graph showing how many pixels are dark, mid-toned or bright. Dark values are usually on the left and bright values on the right.
- 01Dark pixels
- 02Middle tones
- 03Bright pixels
How do you use Histogram practically?
A small exercise
Photograph a white object on black paper. Look at the graph and relate the dark and bright peaks to parts of the scene.
- Make a starting version and keep it so you can compare fairly.
- Try the change in the exercise. Keep unrelated choices steady where the exercise allows.
- Compare the result at the size your viewer will actually see. Write down what changed and whether it helped.
How does Histogram solve a problem?
It helps check tonal distribution when a bright screen makes a photograph look better exposed than it is.
What can go wrong?
A histogram need not form a hill in the middle. A night scene and a white background naturally look different.
How do you turn the idea into a useful solution?
Start with the specific problem in your image or brief, try the exercise, and keep the version that meets that need. If the result is worse, return to the starting version and change one choice at a time.
Quick check: can you explain the three ideas in the diagram?
Dark pixels → Middle tones → Bright pixels. Explain how each relates to the exercise. Then compare the starting version with your result and choose the one that meets your brief.
Related video lesson
Exposure controls — Canon
This related lesson gives wider context for the topic. Camera menus and software versions may differ from yours.
Loading the player connects to YouTube. You can also watch the lesson on YouTube.Keep exploring
Try the idea in a studio shoot
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