1. Definition of Photography
The word "photography" comes from Greek: phōs (φῶς — light) and graphē (γραφή — drawing, writing). Literally, it means "drawing with light".
According to Langford's Basic Photography, photography is the process of recording an image of a scene by using light falling onto a light-sensitive surface (in a digital camera, this is the sensor).
"Photography is a way of recording images of a scene by using light falling onto a light-sensitive surface."
Photography is not just technique — it is the combination of science (optics, chemistry, sensors), art (composition, light, storytelling) and vision (how we see the world through the frame).
2. Brief History
The basic idea of photography existed long before the camera was invented. Below are the key milestones:
| Period | Event | Significance |
|---|---|---|
| 5th century BCE | Mozi (China) and Aristotle (Greece) described the camera obscura phenomenon | The first principle: light passing through a small hole creates an inverted image |
| 16th century | The camera obscura became a drawing aid for painters | Artists used it to sketch perspective |
| 1826 | Joseph Nicéphore Niépce took the first photograph (View from the Window at Le Gras) | The first permanent photograph in history |
| 1839 | Louis Daguerre announced the daguerreotype process | Photography became a mass medium |
| 1888 | George Eastman launched the Kodak camera with roll film | Photography became accessible to the public |
| 1975 | Steven Sasson (Kodak) built the first digital camera | The digital era began |
| 2000s–present | Mirrorless cameras, smartphones, AI photography | Photography became globally ubiquitous |
"The camera obscura, the daguerreotype, and the digital sensor are separated by almost two thousand years of technological evolution — yet the principle remains: light enters, an image forms, and it is captured."
3. Main Genres
Modern photography is divided into many genres, each with its own techniques and purposes:
- Portrait: Captures the appearance and personality of a person or group. Typically uses a focal length of 85–135mm and a wide aperture to separate the subject from the background.
- Landscape: Captures nature, cities, or expansive scenery. Typically uses a wide focal length (16–35mm) and a small aperture (f/8–f/16) to ensure a deep depth of field.
- Street: Captures candid moments in public spaces. Requires quick reflexes and storytelling instinct.
- Documentary / Photojournalism: Records facts, events, or stories of social significance. Requires high professional ethics.
- Macro: Close-up photography of small subjects (insects, flowers, details) at a magnification ratio of 1:1 or greater.
- Wildlife: Photographing animals in their natural habitat. Requires long focal lengths (200–600mm) and fast shutter speeds.
- Still Life: Photographing inanimate objects, often arranged for artistic or commercial purposes.
- Fashion: Showcasing clothing, accessories, and style. Combines portraiture and visual art.
"Every genre demands its own visual language. A portrait is a conversation; a landscape is a meditation; a street photograph is a capture."
4. Thinking About Light
Light is the raw material of photography. Without light, there is no image. Understanding light is the most important skill a photography student needs to develop.
Four Properties of Light
- Intensity: How strong or weak the light is. Directly affects exposure.
- Quality: Whether the light is hard or soft. Hard light creates sharp shadows; soft light creates smooth transitions.
- Direction: Where the light comes from — front, back, side, top, bottom. Each direction creates a different emotion.
- Color: Color temperature (Kelvin). Warm yellow light (2700K–3500K), white daylight (5000K–5500K), cool blue light (6500K–10000K).
"Light is the raw material of photography. Without light there is no image. The photographer's first task is to learn to see light."
In upcoming lessons, you will learn in detail about:
- Lesson 03: How to control light through aperture, shutter speed, and ISO (the exposure triangle).
- Lesson 06: Natural light — golden hour, blue hour, and light direction.
- Lesson 09: Artificial light — flash, continuous lights, and modifiers.
5. Demo: Camera Obscura
To understand the basic principle of photography, interact with the demo below. You will see how light passing through a small hole creates an inverted image on a surface.
6. Summary
After this lesson, you have learned:
- Definition: Photography is "drawing with light" — the process of recording an image with light falling onto a light-sensitive surface.
- History: From the camera obscura (5th century BCE) → Niépce (1826) → Daguerre (1839) → Kodak (1888) → digital camera (1975) → smartphones.
- Genres: Portrait, landscape, street, documentary, macro, wildlife, still life, fashion.
- Light: Four properties — intensity, quality, direction, and color.
Hands-on Exercises
- Observe the light throughout the day where you live: morning, midday, and evening. Note how intensity and color change.
- Take 5 photos representing 5 different genres (portrait, landscape, street, still life, macro). Use any camera — even your smartphone.
- Revisit the "Primary Sources" at the top of the lesson. Note at least 1 thing you want to explore in more depth.
Don't look at the subject or the scene first — look at the shadows first! If the shadows under the nose and eyes are hard-edged and deep black, the light is harsh. Move your subject two steps back into the shade of a porch or tree canopy: the light will instantly turn soft, skin tones will even out, and eyes will open naturally.
Never shoot a portrait in an open field under midday sun (11 AM – 2 PM). Top light shining straight down will cast dark "panda-eye" shadows in the eye sockets and blow out the forehead and cheekbones with unrecoverable highlights, no matter how much post-processing you do.