When taking a photo on my camera using the exposure compensation feature and changing my settings, I notice that the shape does change within the histogram. The data moves to different parts of the histogram based on how much light I allow to enter that part of the photo using the exposure compensation feature. I noticed that the data slumps to the darkest part of the photo. By using the exposure compensation feature within my camera, I am able to adjust the levels of brightness within my image.


In Photoshop, I opened up a photo I had recently taken of a plant in a park. Considering the image featured one long skinny plant with a monotone, blurry background, I figured that the histogram would have all of the data collected in the middle. Almost looking like a tall skinny mountain. To my surprise, I was somewhat close to what I thought it would look like. The levels were a little bit more to the left as that part of the image was slightly darker than the right side. It is fairly easy to see what part of the histogram corresponds to which part of the image because the levels are displayed almost exactly where the subject of the photo lays within the layout of the photo. The data is close to where the subject of the photo is as well as the darkest part of the photo.

Real-Life Application:

You can tell by looking at a histogram if a photo is correctly exposed if there is data spread out across the whole image and not more on one side than the other. I went to Manito Park to take three underexposed, correctly exposed, and overexposed photos. In order to take the underexposed photos, I increased my aperture, adding in less light. I lowered my aperture to take my correctly exposed photos, and I increased my shutter speed and lowered my aperture again in order to capture the overexposed photos.


A histogram is a bar graph for images displaying data that represent and measure the levels of black and white (brightness) within a photo. Exposure compensation is a technique in photography that allows the photographer to adjust the levels of brightness within their photos. You can tell if a photograph is correctly exposed if there is data displayed across the whole image. If it’s missing on a certain edge, then it should be readjusted to add balance to the image.

Shadows display the darkest regions of the photo; midtones display the medium tones of the photo, and highlights display the brightest parts of the photo. I observed that you can adjust these levels to balance the level of brightness in your photo.