What is contrast in photography?
Like in life, contrast in photography is the use of opposites. As they say, variety is the spice of life, so just the presence of contrast in a photo makes it more engaging, because the difference is interesting. Unlike my senior school math teach who spoke in a monotone!
But there’s more to contrast than just variety. It’s a composition tool photographers use to add to atmosphere and influence the feeling of a photo.
How do you use contrast in photos?
Contrast can be created in a number of ways. The three most common are:
- Tonal contrast – the dynamic range of a photo extending from pure white, through gray, to pure black
- Color contrast – the use of color theory to create interesting images
- Contrast in composition is called juxtaposition – using two opposing concepts in an image
I’ve written about color contrast and juxtaposition…
So now let’s explore how to use tonal contrast in photography.
Why use tonal contrast in photography?
Using a tonal contrast that matches the mood of a photo enhances the message and helps the viewer understand the photo. When you create emotion in an image, you engage the viewer and hold their attention longer.
Have you noticed how toothpaste adverts are very bright and white? That’s because we associate bright, light images with positive, upbeat feelings. So it emphasizes the message of good health.
On the other hand, can you imagine if the scenes in Breaking Bad were all light, bright and without shadows? It just wouldn’t gel. The contrast of light and dark is a visual clue that it’s a gritty, dramatic subject.
That said, shadows aren’t just for crime. Images with shadows evoke deep emotions.
This image uses a broad range of tonal contrast from dark to light, with most of the tones falling into the midtone to light area, as you can see in the histogram below. The feeling is lighthearted and happy.
Further reading: How to read a histogram and why it’s not perfect
How do you create tonal contrast in an image?
You need light and dark areas in an image for tonal contrast. The bigger the difference between the two, the greater the tonal range will be and therefore the tonal contrast.
Light is the ultimate creator of tonal contrast in photos, because with light comes shadow. The trick lies in recognizing the impact of light and then mastering how you use it to control shadows.
1. Use direction of light for contrast in photos
The direction of light on your subject impacts the shadows and therefore the amount of contrast in an image:
- Front light – ideal if you want flat lighting without shadows
- Side light – skims light across your subject to create form and emphasize texture by creating shadows
- Backlight – perfect for deep shadows and bright highlights that define the edges of your subject
2. How quality of light affects contrast in photos
When we talk about quality of the light, we’re describing how hard or soft it is. This will also have a big impact on the tonal contrast of the scene.
Soft light tonal contrast
Soft light creates soft shadows, if any.
Think of an overcast day – the heavier the clouds the more faded shadows will be until there are no shadows. The image at the top of this article was shot at the end of a very overcast day once the sun had dipped below the horizon. These sorts of days are ideally suited to low contrast photography.
Hard light tonal contrast
Hard light creates bright highlights and deep shadows.
Think of a bright sunny day – lots of light, but also strong shadows. So on a sunny day high contrast photography is easy to achieve.
Further reading: Light quality & quantity of light – essential knowledge
Which brings us to the next point…
What’s the difference between low contrast and high contrast photography?
Contrast is not about how light or dark a photo is, but the difference between the tonal values of the lightest area and the darkest area.
Low contrast photography
With low contrast photography, the range of tones in a photo is very narrow. In other words, there isn’t a big difference between the brightest part of the image and the darkest part.
If you have a look at the histogram of a low contrast photo, you’ll see that the histogram spikes are bunched together, usually to the right of the histogram for a light low contrast image, as with the image below.
You could also have a dark low contrast image, in which case the histogram will be bunched to the left. Low contrast doesn’t mean bright, it just means that there’s a small tonal value difference between light and dark.
Further reading: What is high key photography, and how to master it
High contrast photography
On the other hand, high contrast photos encompass a broad range of tones, from deep shadows to bright highlights.
The histogram will be wide ranging, because it will contain information in all areas from black to white. In a very high contrast image you’ll see tones all the way from deepest black on the left to brightest white on the right.
You can adjust the image in post processing to deepen the shadows and raise the highlights further using the tone curve. In Lightroom, for example, you would use the whites, blacks, highlights and shadows sliders to increase the tonal contrast, as well as the tone curve tool.
Further reading: Master the Lightroom tone curve for much better photos
Using contrast for different photography styles
If we compare these popular styles of photography you can see how the use of contrast affects mood in a photo.
Contrast for a light and airy style
This is really popular for lifestyle family photography. It conveys a happy summer vibe and reminds you of those carefree days of your childhood.
There are minimal shadows, colors are muted and skies are often blown out. If you look at the histogram, most, if not all, of the information is to the right in the lights and highlights area.
In post production, shadows are lifted further to reduce tonal contrast. Sometimes vibrance is reduced to mute the brighter colors and so reduce color contrast.
Contrast for a dark and moody style
When photographing people, dark and moody is a great style for couple photography, because the shadows convey deep emotions.
Windy days that catch long hair and dramatic skies are perfect for dark and moody. Again, because this style is full of emotion. Hair and clothes blowing in the wind conveys a sense of movement.
Shadows are deep, but soft. No hard edges.
The histogram is bunched to the left in the shadows and then spreads out across darks and midtones, but doesn’t extend to the highlights on the left.
Contrast for a dramatic style
I love dramatic light for boudoir and fitness photography. It’s bold and eye catching, but at the same time feels intimate, because of all the shadows.
Dramatic images are high contrast photos. They’re predominantly dark with deep shadows and occasional highlights. Perfect for emphasising curves and defining muscle tone.
Further reading: How to use shadows in photos to add atmosphere
Tonal contrast in conclusion
When planning a shoot, think first about the feeling you want to create in the photo. This will inform how you use light to create the contrast that suites the style of the shoot.
If you use natural light, it will impact the time of day you shoot, where you shoot (in full sun, open shade or indoors) and where you position your subject in relation to the sun (back to the sun, facing the sun or side on).
Likewise, if you use flash to light your subject, or a combination of flash and ambient light, where you position the light in relation to your subject will have a big impact on the contrast in the photos and therefore the feeling.
How you process the photos in post production will also be impacted by the intention you set out with before you took your first photo.
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By Jane Allan
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