The Mentor: Photography, Vol. 6, Num. 12, Serial No. 160, August 1, 1918

In Short

This volume serves as a comprehensive primer on the science and aesthetics of photography at the end of the First World War. It traces the technical evolution of the craft—from the early, laborious daguerreotype to modern film—while highlighting the work of pioneering portraitists and the expansive reach of the lens into astronomy, medicine, and motion pictures. It remains a fascinating historical artifact, documenting a moment when the camera transitioned from a mechanical novelty into a sophisticated language for recording the world and revealing the unseen.

The Story

The narrative begins by grounding photography in its etymological roots, defining it as "light-writing." It explains the fundamental physics of the camera, describing it as a light-tight box capable of projecting an image onto chemically sensitive surfaces. The text quickly moves past the historical debate over who "discovered" the medium, positing that photography was not the result of a single epiphany but the collective contribution of various investigators like Daguerre, Niépce, and Fox Talbot.

The text then navigates the technical landscape of the time. It walks the reader through the chemistry of development, describing how silver salts react to light to create a negative, and how subsequent printing processes—such as platinum, carbon, and gum-pigment—allow for varying degrees of artistic control. A significant portion of the discourse is dedicated to the distinction between the "mechanic" photographer, who works by rote, and the true craftsman. This leads to a discussion of David Octavius Hill, a Scottish painter who turned to the calotype process to capture portraits for a massive historical canvas. Hill is framed as a pivotal figure; though he was not a "great" painter, his photographic work, characterized by long, sunlight-drenched exposures, earned him a place in the second rank of portraitists, proving that the camera could capture the "psychic insight" of a subject.

As the text expands its scope, it reveals photography as a servant of science. It details how the cumulative effect of light on sensitive plates allows astronomers to capture stars otherwise invisible to the human eye, and how microphotography enables researchers to study the minute world. It even ventures into the then-modern field of radiography, explaining how X-rays—invisible ether vibrations—can record the internal structures of the body, a discovery that proved both life-saving and, in its infancy, perilous to those who did not yet understand its power.

The story concludes by looking toward the future of the medium. It touches on the "persistence of vision" that makes motion pictures possible, describing the mechanics of projection and the manipulation of time through varying frame rates. Finally, it returns to the question of art, acknowledging a devoted group of photographers who use the camera to move the spirit. The book argues that while the camera has limitations—particularly in imaginative or fantastical illustration—it possesses boundless potential for those who treat it as a tool for creative expression rather than mere documentation.

How It Unfolds

The scientific foundation The narrative establishes the physical principles of the camera obscura and the chemical interactions required to make an image permanent. It explains the transition from early, fragile methods like the wet collodion process to the standardized dry-plate and film systems of the early twentieth century.

The rise of the portraitist The focus shifts to the human element, using the work of David Octavius Hill to illustrate the importance of artistic intent in portraiture. It examines how long exposure times and natural light transformed the photographic portrait into a medium of depth and individual character.

The eye of the scientist The book explores how photography transcends human perception by recording light in deep space and magnifying microscopic details. It treats the camera as an instrument of precision, capable of documenting bone fractures via X-ray and recording phenomena that the naked eye cannot observe.

The artistic control The narrative pivots to the "control processes" like bromoil and gum-platinum, which allow the photographer to manipulate the final image as a painter might. It suggests that when a photographer goes beyond the straight record, they move from being a mere mechanic to a creative artist.

The magic of motion The final technical beat explains the mechanics of motion pictures, demystifying the illusion of movement. It illustrates how the blending of successive frames allows for the artistic manipulation of time, from slowing down a bullet to speeding up the life cycle of a plant.

The People

The book centers on the figures who pushed the boundaries of the medium. David Octavius Hill is the primary case study; a man who initially sought to use photography as a shortcut for painting, he became a master of the portrait through his sensitivity to his subjects. He represents the ideal transition from artist to photographer. Thomas Wedgwood is credited as a crucial early experimenter who sought to fix images permanently, laying the groundwork for later successes. The text also mentions various "artist photographers" of the era, such as Arnold Genthe and Clarence H. White, who represent the professional standard of the time. These individuals want to be seen as more than just technicians; they seek to establish photography as a legitimate, emotive art form. They are often challenged by the public perception of photography as an easy, mechanical process—a "stunt" that anyone can perform. By the end, these figures are presented as pioneers who have successfully elevated the craft, moving from the scientific study of light to the nuanced expression of human experience.

In Its Own Voice

"The decadence of the daguerreotype is to be regretted for at least one reason,--the man who elected to work in that medium was necessarily at least a craftsman, whereas at the present time many photographers are neither artists nor craftsmen, but merely mechanics of only fair skill."

This critique highlights the author's disdain for the loss of technical rigor that accompanied the rise of more convenient, automated photographic processes.

"Photography has not only superseded manual processes for reproduction, but has also largely replaced them for purposes of illustration."

This observation reflects the shifting landscape of visual culture in 1918, as the camera replaced the draftsman in news and advertising.

"There are a small but devoted band of photographers who use the camera as a means of artistic expression, and these men and women have produced some wonderfully fine results that fulfil the definition of art: 'A means of arousing an emotion in the spectator.'"

The author uses this definition to distinguish between the commercial, rote application of the camera and the work of those he considers true artists.

What It's Really About

At its core, the book is an argument for the legitimacy of photography as a dual-purpose discipline. It grapples with the tension between the "mechanic" who relies on the camera’s inherent accuracy and the "artist" who seeks to manipulate that accuracy to evoke emotion. The text is preoccupied with the idea that the camera is not a neutral recorder but a tool whose output is entirely dependent on the sensitivity and skill of the user. It asks whether a machine can be an instrument of art, ultimately concluding that when a user moves beyond the "straight" record into control processes, they transcend the limitations of the lens to construct an imaginative result.

Why Read It Today

Readers with an interest in the history of technology or the philosophy of art will find this volume particularly rewarding. It offers a clear, nostalgic, and precise window into the state of photography on the cusp of the modern era. The writing is straightforward and devoid of modern marketing flourishes, providing a refreshing, direct encounter with the technical concerns of 1918.

The reader should be prepared for the author’s occasional elitism; he is visibly skeptical of the "mechanics" who embraced the ease of modern, amateur-friendly cameras, preferring the labor-intensive methods of his peers. The language reflects the period's educational tone—earnest and somewhat didactic—which may feel antiquated to those accustomed to contemporary, fast-paced technical manuals. However, there is a genuine warmth in how the author describes the "magic" of a lens projecting an image onto a dark room wall. It serves as a reminder of how, even in an age of digital ubiquity, the fundamental act of capturing light remains a profound intersection of science and humanity. You will walk away from it with a new appreciation for the long, complex history of the "light-writing" we now take for granted every time we press a shutter button.