Tutorials Video

A History of Photography

History · ~20 min

Overview

Photography's history is a chain of chemistry and optics breakthroughs, each solving the previous method's biggest limitation (exposure time, permanence, portability, color) and several of the vocabulary and convention choices from that chemical era (f-stops, ISO, the shutter itself) persist unchanged into fully digital cameras.

What You Need

No equipment required. This is a reference and context guide, not a hands-on tutorial

Steps

The first fixed images (1820s-1830s)

Nicéphore Niépce's 1826 or 1827 heliograph is generally regarded as the earliest surviving photograph, requiring an exposure of at least several hours. Louis Daguerre's daguerreotype process, announced in 1839, reduced exposure times to a still-lengthy several minutes but produced a sharp, detailed, and (crucially) reasonably practical image, and is often treated as photography's true public debut.

Film, portability, and mass adoption (1880s-1900s)

George Eastman's Kodak camera (1888) and, more importantly, flexible roll film replaced fragile glass plates, and the marketing promise 'you press the button, we do the rest' (Kodak handled development) made photography accessible to non-experts for the first time. A genuine democratization moment directly analogous to the smartphone camera a century later.

Standardizing exposure: f-stops, film speed, and the shutter (1900s-1940s)

The f-stop numbering system (f/1.4, f/2, f/2.8...) standardizing aperture across different lenses, and film speed ratings (which became ISO) both emerged from decades of manufacturers needing interoperable, predictable exposure math. The same math still used in fully digital cameras today. The mechanical shutter, which literally opens and closes to control exposure time, gave photography and later video the vocabulary ('shutter speed') that persists even in devices with no physical shutter at all.

Color, then digital, photography (1930s-2000s)

Kodachrome (1935) made color photography commercially practical, though black-and-white remained dominant in photojournalism for decades afterward for cost and archival-permanence reasons. Digital photography, commercially viable from the late 1980s-1990s and dominant by the mid-2000s, replaced the chemical process entirely but kept its vocabulary (aperture, ISO, shutter speed) because the underlying exposure physics (how much light reaches the sensor, for how long) hadn't changed at all.

Pro Tips

Every camera setting a photographer adjusts today (aperture, shutter speed, ISO) is vocabulary inherited from 19th and early 20th century chemical photography, not a digital-era invention.
Kodak's 'you press the button, we do the rest' democratization of photography in 1888 is the direct ancestor of the smartphone camera's democratization of both photography and video a century later.
Photojournalism's slow, cost-driven adoption of color (well into the late 20th century in many outlets) is a reminder that new formats often lag behind their technical availability for economic and stylistic reasons, not just technical ones.

Knowledge Base

What You'll Learn

Photography's chemical era set the exposure vocabulary and conventions that digital cameras inherited wholesale. The physics of light and exposure never changed even as the recording medium did completely.

Quick Timeline

1826/27: Niépce's first fixed photographic image.
1839: Daguerre's practical daguerreotype process.
1888: Kodak roll film camera democratizes photography.
1935: Kodachrome makes color photography practical.
Late 1980s-2000s: Digital photography becomes dominant.

Why This Still Matters

Anyone learning still photography fundamentals today (see this site's own photography fundamentals tutorial) is learning a vocabulary and set of controls (aperture, shutter, ISO) that are direct, unmodified inheritances from 19th and early 20th century chemical photography. The medium changed from chemistry to silicon. The exposure triangle didn't.

Where This Fits

This guide covers one specific part of the history of media technology. The wider picture — how each link in the chain from capture through transmission to display was actually built, who built it, and why the credit so often landed somewhere else — is in A History of Broadcast Technology: The Chain From Capture to Screen, which frames the discipline as a whole and links out to the detailed guides underneath it, including this one. If you are starting from scratch rather than solving a specific problem, read that first and come back here.

FAQ

Q: Why do f-stops use such an odd numbering sequence (f/1.4, f/2, f/2.8)?
A: Each standard stop represents a halving or doubling of the amount of light reaching the film or sensor, and because aperture area scales with the square of the f-number, the sequence follows roughly the square root of 2 (1.4, 2, 2.8, 4...) to produce even light-doubling steps. An elegant solution standardized industry-wide in the early-to-mid 20th century.

Q: When did digital photography actually overtake film?
A: Digital cameras became broadly viable for professional and enthusiast use through the 1990s-early 2000s, and consumer film sales collapsed sharply through the mid-to-late 2000s as digital compact cameras and then camera phones became widespread. The transition took roughly 15-20 years from first viable digital cameras to film becoming a niche/enthusiast format.