Direction of Light in Photography

Direction of light is where the light comes from relative to your subject and your camera. It matters because a photograph is flat, and the only clues a viewer gets about shape, texture and depth are the shadows and highlights, and those are set almost entirely by direction. The same rock, face or tree photographed with the light in front, beside or behind it gives three different pictures with nothing else changed, and the quickest way to change direction is usually to move your feet.

Light, subject and camera: a three-way relationship

Direction is not a property of the light alone. It is the angle between three things: the light source, the subject and your camera. Sunlight from the east is front light if you face west, side light if you face north, and backlight if you face east. Change any one of the three and the direction changes. You can walk around the subject, turn the subject (a person, a product, a chair), or wait for the light to move. Outdoors you cannot move the sun, but you can almost always move yourself, which is why direction is the lighting control every photographer already owns.

Direction also has two parts, not one. The first is the angle around the subject, measured from your camera’s line of sight: light from straight behind you is 0 degrees, light from one side is 90 degrees, and light pointing back at the lens is 180 degrees. The second is height: how far above or below the subject the light sits. Low sun at the start and end of the day, high sun in the middle of a summer day, and light bouncing up off water or snow are the same three positions on the height scale. Both decide what the picture looks like.

One more rule sits underneath everything here: direction matters about as much as the light is hard. Bright sun or a bare bulb is a small source, so it throws crisp shadows and its direction is obvious. A heavily overcast sky is enormous, wraps light around the subject from many angles and leaves soft, faint shadows, so direction is weak. Hard and soft light is the other half of reading light, and the two always work together.

The light compass: what each angle does

Picture your subject at the centre of a circle with your camera at the bottom. As the light moves around that circle, more of the subject’s camera-facing side falls into shadow, and the shadow is what carries shape. That is the central tradeoff: the more angle, the more form and the more shadow. Moving the light toward the camera fills the shadows but flattens the subject; moving it away carves the subject but leaves more of it dark.

Add the second axis on top of this. Low light, near the horizon, makes long shadows and rakes across vertical surfaces. Light at roughly 30 to 50 degrees above the subject is the height most portrait setups use. Light from nearly overhead drops shadows straight down. Light from below turns the usual shadow pattern upside down.

To see the circle on a face before you go out, the Lighting Setup Diagram Tool lets you place a key light around a subject and see the setup from above. The angles in the table are the same ones studio photographers use to name portrait lighting patterns, so learning the compass outdoors teaches you the studio vocabulary at the same time.

Front light: color at full strength, shape at its weakest

Front light comes from behind the camera and lands on the side of the subject you are photographing. It is the old “keep the sun over your shoulder” rule, and it is easy to expose because the whole visible surface is evenly lit with no deep shadows to hold.

Its strength is color. Because you see only lit surfaces, colors render at full saturation: a painted door, a field of flowers, a sign, a bird’s plumage. Its weakness is shape. The shadows that would describe form fall behind the subject, where the camera cannot see them, so a face looks smoother and flatter and a canyon wall or brick facade loses the shadows that would show each crack. Use front light when the subject is color, pattern or information: documents, group photos where every face must be readable, flat artwork, signage.

Front light changes one more tool. A polarizer darkens blue sky most strongly in the part of the sky about 90 degrees from the sun, and barely at all in the part directly opposite the sun. With the sun straight behind you the sky you are pointing at is close to that weak spot, so a polarizer does little to it. Turn so the light comes from the side and the effect is at its strongest.

Want to know when a polarizer will darken the sky and when it will do nothing? Polarizing Filter (CPL) covers the angle to the sun and when to take it off.

Three-quarter light: the everyday working angle

Swing the light about 30 to 45 degrees off the camera’s line of sight and you get most of the color of front light with a strip of shadow along the far side of every form. That shadow is enough to make a cheek round, a tree trunk cylindrical and a cliff three-dimensional. It is the default angle for a large share of portrait, product and landscape work for that reason.

Look at the opening photo of this page. The sun is off to one side of the camera, so the faces of the sandstone ridges turned toward it are lit while the recesses between them sit in shadow, and the sky behind keeps its deep blue. Front light would have shown the same red rock as one flat wall; side light would have thrown much more of it into shadow.

On a person, light at this angle and a little above eye level creates loop lighting, where the shadow of the nose loops down toward the corner of the mouth, or, a little further around and higher, the small lit triangle on the shadow-side cheek of Rembrandt lighting. Which way the face turns matters too. With the lit side of the face toward the camera it is broad lighting, which shows more light and widens a face; with the shadowed side toward the camera it is short lighting, which slims it and adds depth.

Side light: texture, relief and volume

Side light strikes the subject from about 90 degrees, so the camera sees a lit half and a shadowed half. When it comes in at a low, grazing angle it is often called raking light. Every bump, groove and ridge on a surface casts its own small shadow, and the build-up of thousands of tiny shadows is what the eye reads as texture.

This is why landscape photographers want the sun low. Low sun travels almost parallel to the ground, so it rakes across vertical and textured surfaces instead of falling on them from above. A mountain range, an eroded cliff or a stucco wall that looks featureless at noon can look carved an hour after sunrise, because the direction of the light changed. The light also got warmer, but warmth alone does not carve anything; the angle does.

Test your eye: pick the photo below that shows the surface texture more strongly, then read why.

Which photo shows the surface texture more strongly?

A B

Side light is not automatically flattering on people. The same raking shadows that reveal rock texture reveal every pore, wrinkle and blemish, and with no fill, half the face drops into darkness. That is split lighting: strong and dramatic, but a choice, not a default. If you want the shape of side light with less contrast, keep the light where it is and add light to the shadow side with a reflector, a white wall or a weaker second light. The ratio between the bright side and the shadow side is what decides how dramatic the result looks.

Want the shape of side light without losing half the face to shadow? Lighting Ratios Explained shows how much fill gives a gentle 2:1 and how little gives a moody 8:1.

Backlight, rim light and glow

Backlight comes from behind the subject, toward the camera. The side you are photographing gets little direct light, and three things become possible: a silhouette, a lit rim, and a glow through anything thin enough to let light through.

A silhouette is an exposure choice, not something backlight does on its own. If you expose for the bright background, the subject goes dark and only its outline remains. That works when the outline is simple and separate: one tree, a person in profile, a boat on open water. A tangle of overlapping shapes against a bright sky just reads as a dark blob. The silhouette guide covers how to expose and pose for one.

If you want detail in the subject instead, expose for the subject. Your camera’s meter sees the bright background and darkens the whole frame to compensate, which is why backlit faces so often come out too dark. Dial in roughly +1 to +2 stops of exposure compensation, or use spot metering on the subject, and accept that the background will go bright. A reflector or a little flash from the front lets you keep both.

See the two choices side by side: pick the photo below that metered for the subject rather than the background, then read why.

Which photo metered for the subject rather than the background?

A B

When the light source sits behind the subject and is either hidden by it or just off to one side, only the edges catch light. That bright outline is rim light, and it separates a dark subject from a dark background better than any other angle. Hair, fur, steam, dust, spider silk and the fine seed heads of grasses light up most of all, because their edges and fibers are thin enough to glow.

Backlight has a cost: the light is pointing at your lens, so stray light can enter the glass and lower contrast or add flare. A lens hood, shading the front of the lens with your hand, or hiding the sun just behind a branch or the subject’s head all help. Backlighting: Silhouettes, Rim Light, and Dramatic Effects goes further into each of these looks.

Is your backlit subject still coming out too dark? Exposure Compensation explains how far to push the +/- control and when your meter is being fooled.

Height of the light: low, high and overhead

The second axis changes pictures as much as the first. Low light makes long shadows, which spread texture and shape across the ground and up vertical surfaces. High light makes short shadows that hide under things. How long a shadow is depends only on how high the sun is, so the numbers are worth knowing:

“Midday” and “overhead” are not the same thing. The sun is only ever directly overhead between the tropics. Everywhere else, the noon sun is lower in winter than in summer, and lower the further you are from the equator. At noon on the solstices and equinoxes it stands this high:

So at 45 degrees latitude, a person’s noon shadow is about 0.4 times their height in midsummer and about 2.5 times their height in midwinter. Winter noon light far from the equator rakes like a summer afternoon. Summer noon light is where the trouble starts.

High light from straight above casts shadows straight down: into the eye sockets, under the nose and under the chin. It also flattens landscapes the way front light flattens a face, because vertical rock receives light at a steep angle and its shadows shrink. But high light is not bad in itself. Butterfly lighting, a classic beauty setup, is high front light: the light sits above the camera, angled down, and leaves a small shadow under the nose. The problem is light that is too high and slightly behind the brow, with nothing in front to fill the eyes. High light also suits subjects seen from above, such as food, flat-lays and aerial views, where you want even light across a horizontal surface.

When the sun is high and you are photographing a person, change the direction rather than fighting it. Step into a doorway, under a porch roof or to the edge of a tree’s shade, and the overhead sky is blocked while light from the open side still reaches the face. Top light becomes soft side or front light. Open shade explains where to find it and where to put your subject, and shooting in harsh daylight covers the other options.

Need to know when the sun will be low enough to rake across your scene? The Golden Hour Calculator gives the times for your location and date.

Light from below

Light from below the subject turns the familiar shadow pattern upside down. Shadows fall upward, above the brow and up the sides of the nose, which is why a face lit by a campfire or a phone screen held at chest height looks strange or menacing. Used on purpose it is a strong tool for drama or unease; a laptop lighting a video call from below just looks off.

Weak light from below is far from rare, though. Water, sand, snow, pale stone and light pavement all bounce sunlight upward. It fills the shadows under a brim, a chin or a bridge, and it is why a portrait on a beach or in snow has brighter, more open eyes than the same portrait on dark grass. Photographers copy this on purpose with a reflector held low and angled up. As long as the main light is still above, light from below acts as fill and looks natural.

When there is no direction at all

In thick fog or heavy overcast, light arrives from the whole sky at once. There is no single dominant direction and almost no shadow.

This is the opposite of raking side light: instead of thousands of small shadows there are none, and the subject reads as shape and tone rather than sculpted form. That can be exactly right for a quiet, graphic picture. The point is to recognize “no direction” when you see it, rather than choose it by accident.

Most overcast days are not completely directionless, though. The sky is usually brightest overhead and on one side, and a person facing an open field from under a tree, or standing near a window, still gets light from one side. The overcast day guide has a section on finding that direction in flat light.

Not sure whether the light you are looking at is hard enough for its direction to matter? Hard Light vs Soft Light explains how the size of the source sets the shadow edge.

How to read the direction of light on any scene

You can tell where the light is coming from even when you cannot see the source. Look for three kinds of evidence.

1. Shadows. Shadows point away from the light. Their length tells you the height (long means low), and their edges tell you how hard the light is (crisp edges mean a small source such as direct sun).
2. Highlights on round things. On a ball, a tree trunk, a cheek or a bottle, the brightest point faces the light. If the highlight sits on the side of the form nearest you, it is front light; on the edge, side or rim light.
3. The catchlight. A catchlight is the reflection of the light source in an eye or any glossy surface. Its position works like a clock face: at 10 or 2 o’clock the light is high and to one side, the classic portrait position. A missing catchlight usually means the light is too high, too far behind the subject, or blocked by a brow or hat brim. It does not mean the light is too soft: a soft source is a large one, and it makes a larger catchlight, not none.

When you need a quick read anywhere, hold up your hand, or your fist, near the subject and turn it. Watch which side lights up and where the shadow falls. It is a pocket version of the subject, and it shows in a second what a test shot would.

Changing direction: move, turn or wait

Once you can read direction, you have three ways to change it.

• Move yourself. Walk around the subject. Moving 90 degrees around a tree turns front light into side light; another 90 degrees makes it backlight. Ten steps can turn a flat wall of trunks into a scene full of bark texture.
• Turn the subject. A person, a product or a bowl of fruit can be rotated toward or away from a window. Turning a sitter a quarter turn changes the pattern on the face more than any setting will.
• Wait, or come back. The sun moves across the sky at up to 15 degrees an hour. A scene that is front lit in the morning may be side lit by mid-afternoon. For a landscape you cannot walk around, choosing the time of day and the time of year is choosing the direction. Planning around the sun shows how to find where it will be, both its compass bearing and its height.

With artificial light the same three moves apply, plus the obvious fourth: move the light. Keep everything else fixed and move only the key light around the subject, and you will see the compass at work in a few minutes.

Common mistakes and misconceptions about light direction

• “Keep the sun behind you.” This old rule gives safe exposures and flat pictures. Front light is one choice out of the whole circle. Walk around the subject before deciding.
• “Backlight means a silhouette” or “backlight ruins photos.” The silhouette comes from exposing for the background. Expose for the subject and backlight gives glowing edges and translucent color.
• “Midday is always bad, and the noon sun is overhead.” The noon sun is only overhead in the tropics. Far from the equator in winter it stays low all day. And high light suits food, flat-lays, aerials and butterfly lighting.
• “Side light is flattering.” It shows shape and also every wrinkle. On faces, soften it, fill it, or turn the person slightly toward the light.
• “Direction matters just as much on a cloudy day.” Under soft light, direction is weak. Look for the brightest part of the sky and use that, but do not expect hard shadows.
• “More light is better light.” Brightness sets exposure. Direction sets how the subject looks. A dim, raking light often beats a bright, flat one.
• Forgetting how fast the sun moves. At up to 15 degrees an hour, the raking light on a cliff can change noticeably within half an hour. Be set up before it arrives.

Try this: walk the light compass in 10 minutes

Find one subject with visible texture and a rounded shape in direct sun or beside a single window: a tree trunk, a stone wall with a pot in front of it, a pumpkin, or a friend willing to sit still. Set a fixed exposure (manual mode, or note your settings and use exposure lock) so that only the light changes, not the camera.

1. Stand so the light comes from directly behind you and take a frame. That is 0 degrees.
2. Walk a quarter of the way around, keeping the same distance. Take one frame at about 45 degrees and one at 90 degrees.
3. Keep going until the light points toward you, at about 135 degrees and 180 degrees. Shade the lens with your hand for these.
4. Take one more backlit frame about 1.5 stops brighter (slow the shutter speed by 1.5 stops in manual, or dial in +1.5 exposure compensation in an auto mode), so the subject keeps its detail.

Lay the six frames side by side and judge them on three questions. In which frame does the subject look most three-dimensional? In which is the color strongest? In which does the outline separate most cleanly from the background? Most people find the answers are three different frames, and that is the lesson: there is no best direction, only the one that shows what you want to show. Repeat it at a different time of day and you will also see the effect of height.

Want to check you can read the light and say what its angle will do? Try the natural light quiz, which covers the quality and direction of light.

Questions about direction of light

What is the best direction of light for portraits?

There is no single best, but light about 30 to 45 degrees to one side and somewhat above eye level suits most faces, because it shapes the face while keeping both eyes lit. Turn the person toward the light for softer, younger-looking skin, or away from it for more drama. Window light portraits are the easiest place to practise this.

Why do my backlit photos come out dark?

The meter sees the bright sky or window behind the subject and lowers the exposure to keep it from blowing out, which leaves the subject too dark. Add about +1 to +2 stops of exposure compensation, spot meter on the subject, or add light from the front with a reflector or flash.

Is midday sun always bad for photography?

No. It is hard on faces and on landscapes that depend on relief, but it suits subjects seen from above, strong graphic shadows, clear water and bold color. How high the noon sun stands also depends on where you are and the season, so winter noon far from the equator can look like a summer afternoon.

Does direction of light matter on an overcast day?

Much less than in sun, because a cloudy sky is a huge source that lights the subject from many angles. There is usually still a brighter side, often overhead or toward open sky, and placing a person so that side lights the face gives gentle shape.

How can I tell where the light is coming from if I cannot see the sun?

Read the shadows: they point away from the source and their length tells you its height. Then check the brightest highlight on any rounded object and the catchlight in an eye, both of which face the light.

What is the difference between side light and rim light?

Side light comes from about 90 degrees, so half the visible subject is lit. Rim light comes from behind, roughly 120 to 160 degrees around or hidden directly behind the subject, so only a thin bright edge is lit and the rest stays in shadow.