Lighting in Photography: Natural and Artificial

Photography lighting shapes the mood and quality of a picture more than the camera does: a modest camera in good light beats an expensive one in bad light. You do not need much equipment to control light, but you do need to understand three of its qualities: how hard or soft it is, where it comes from, and what color it is. This article explains how to read and use natural light, how to work with artificial light from one or more sources, and how to handle strong midday sun in the Gulf.

Hard light and soft light

The quality of light describes the shadows it creates, and it depends on the size of the source relative to the subject:

• Hard light: a small or distant source, such as the sun in a clear sky, direct flash or a bare bulb. It casts crisp-edged shadows, emphasises texture and shows skin flaws.
• Soft light: a large, close source, such as a big window, an overcast sky or a softbox. Its shadows fade gradually, and it flatters faces and products.

The key rule: the closer the source, the larger it is relative to the subject, and the softer the light. The sun is enormous but acts as a hard source because it is so far away that it looks small in the sky. When clouds cover it, the whole sky becomes one large source and the light turns soft.

Direction of light

• Front light: comes from behind the camera, reduces shadows and flattens features. Useful for hiding skin texture, but it removes depth.
• Side light: at 45 to 90 degrees to the subject, it reveals shape and texture. It is the most used direction for portraits and products.
• Backlight: comes from behind the subject, drawing a bright outline and showing translucency in drinks, leaves and hair. It usually needs a reflector or fill light from the front.
• Top light: like midday sun or ceiling downlights, it leaves shadows under the eyes, nose and chin, and is the least flattering for faces.

Color temperature

Color temperature is measured in kelvin (K). Low numbers are warm and orange; high numbers are cool and blue. The values below are approximate and vary with the source and conditions:

When you set white balance for the main source, that source looks neutral and the others take on color casts. This is the root of the mixed lighting problem covered below.

Natural light: time and place

Golden hour and blue hour

Golden hour is the short period after sunrise and before sunset when the sun is low, so its light is warm, directional and gentler, and shadows grow long and soft. Its length varies with location and season, so do not take "hour" literally; use an app that shows sunrise, sunset and the sun's path for your location. Straight after sunset comes the blue hour, when the sky turns a deep blue that balances with building lights, ideal for exteriors of hotels, restaurants and shopfronts.

Window light

A window is the cheapest and most beautiful softbox you own. For the best results:

• Place the subject close to the window and at an angle, not facing it head-on.
• Use a window without direct sun, or cover it with a thin white curtain to soften the light.
• Switch off the room lights to avoid mixed color.
• Put a white reflector on the opposite side to open up the shadows.

This setup alone is enough for most small products, food and simple portraits. The store-specific version is in Product Photography for Online Stores on a Budget.

Open shade

Open shade is an area the sun does not reach directly but which is open to the sky, such as the shadow of a building or a large tree. Light there is soft and even but leans blue, so set white balance to shade or correct it later.

Midday sun in the Gulf

In the UAE, Kuwait, Saudi Arabia and Qatar, especially in summer, the midday sun is very high and very bright. It creates deep shadows under the eyes, more contrast than the sensor can record, and makes people squint. When you cannot move the session, try these fixes:

1. Move into open shade: a covered walkway, the shadow of a building, or a hotel lobby with a glass front. It is the simplest and most effective fix.
2. Put the sun behind the subject: it lights the hair and shoulders; then bounce light back into the face with a white or silver reflector. Do not aim a strong silver reflector straight into someone's eyes.
3. Hold a diffusion scrim over the subject: a panel of diffusion fabric held by an assistant between the sun and the person turns hard sun into soft light.
4. Use fill flash: to lift shadows while keeping a bright background. You may need high-speed sync if the shutter speed exceeds your camera's flash sync speed.
5. Use a neutral density (ND) filter: when you want a wide aperture for a soft background in bright light without going past your camera's fastest shutter speed.
6. Plan the timing: outdoor portrait and fashion sessions work best in the first hours after sunrise or shortly before sunset, and in the cooler months.

Watch the practical side too: equipment and batteries heat up, your subject needs water and shade between shots, and lenses fog when you move from an air-conditioned room into hot, humid air, which happens often in coastal cities. Leave the camera in its closed bag for a few minutes so it can approach the outside temperature before you take it out.

Artificial light: flash and continuous light

There are two main kinds:

• Flash (speedlights or studio strobes): very powerful and instantaneous, so it freezes motion and can overpower sunlight. You only see its effect after the shot, and it takes some practice.
• Continuous light (mostly LED panels and lamps): what you see is what you get, and it works for both photos and video. It is usually weaker than flash, so you may need to raise ISO or slow the shutter.

When choosing LED lights, check the color rendering index (CRI) or an equivalent metric. Low-rated lights render skin and products inaccurately and can add a green or magenta tint. A value of 95 or above is a common recommendation for color-critical work.

Modifiers shape the light coming out of a source: softboxes and umbrellas soften it, a beauty dish gives something between hard and soft, and a snoot confines it to a small spot.

Remember the inverse square law: light intensity falls off roughly with the square of the distance. Double the distance between source and subject and only about a quarter of the light arrives, two stops less. That is why light drops off quickly toward the background when the source is close to the subject, an easy way to get a dark backdrop. How the amount of light translates into aperture, shutter speed and ISO is explained in The Exposure Triangle.

Three-point lighting: key, fill and rim

This classic setup underlies most professional lighting:

• Key light: the main and strongest source, usually 30 to 45 degrees to the side of the subject and slightly above eye level.
• Fill light: weaker than the key, on the opposite side, opening up shadows without removing them. A simple reflector can do this job instead of a second light.
• Rim light: from behind at an angle, it draws a bright edge on hair and shoulders and separates the subject from a dark background.

The ratio between key and fill sets the mood: a small difference gives a bright, friendly image suited to corporate work; a large difference gives drama. You can add a background light to separate or color the backdrop. Applying this to staff and executive portraits is covered in Portrait and Corporate Headshot Photography.

One-light setups

One good source and a reflector are enough for professional results:

• Rembrandt lighting: the light at about 45 degrees and above head height, producing a small triangle of light on the shadow-side cheek. Add a reflector on the other side to soften the shadow.
• Loop lighting: the light a little closer to the camera axis, so the nose casts a small loop-shaped shadow on the cheek. Flattering for most faces and well suited to staff photos.
• Butterfly lighting: the light in front of and above the face, with a reflector under the chin. It emphasises cheekbones and is common in beauty work.
• Products: a large softbox from the side or back-side, a white reflector opposite, and a curved sweep background so no line shows where table meets wall.
• Food: light from behind or back-side to bring out steam, gloss and texture, with a small reflector in front. Dishes and styling are covered in Food Photography for Restaurants and Cafés.

Mixed lighting and its problems

Mixed lighting means sources of different colors in the same scene: bluish daylight from a window, warm ceiling lights, perhaps a screen or an illuminated sign. The camera can only white-balance for one source, so a face turns orange on one side and blue on the other, and that is hard to fix later even from a RAW file. Fixes, in order:

1. Turn off unnecessary sources and keep one dominant source.
2. Match colors with gels: a CTO (orange) gel on the flash to match warm tungsten lights, or a CTB (blue) gel on a warm light to match daylight.
3. Set white balance for the source lighting the subject, not the biggest source in the scene.
4. Shoot RAW to keep the most room for correction.

The problem is very common in apartments and villas, where window light competes with ceiling lights, and in conference halls. Solutions are covered in Real Estate and Architectural Photography and Event and Conference Photography.

Reflectors and flags

• White reflector: returns soft, neutral light; the safest choice.
• Silver reflector: returns stronger, more specular light; useful from further away or on overcast days.
• Gold reflector: adds warmth, but can look unnatural on some skin tones if overdone.
• Black flag: absorbs light instead of reflecting it, deepening the shadow on one side of a face or product. Useful when the light is too flat in a white-walled room.

The budget version: a sheet of white foam board from a stationery shop and a piece of black card.

Lighting checklist

• What is the main source, and from which side does it come?
• Are the shadows hard or soft, and does that suit the subject?
• Are there sources of different colors you can switch off?
• Is white balance set for the source lighting the subject?
• Are the shadows under the eyes or behind the product acceptable, or do they need a reflector?
• Outdoors: can the session move into shade or to a better time?
• Have you checked the histogram to make sure highlights are not clipped?

Light is one of the five core skills in our photography fundamentals guide, and getting it right does half the work for all the others.