Analogue image editing

How Does the Smoke Get into the Picture?

A glass plate negative reveals the handmade trick.

Detail of the glass plate negative with red retouching around the cigarette and smoke.

Negative retouching - image editing with a brush and a sensitive touch

A photograph with a burning cigarette was long a popular portrait motif. It could be read as a status symbol and corresponded to a mostly masculine ideal of ease, sophistication and self-confidence. For that reason, this motif was also often requested in portrait studios. As this picture shows, the man appears elegantly and deliberately staged: in a suit, with tie, carefully arranged hair and a casually held cigarette in his hand. The bright trace above the cigarette heightens the impression of smoke, embers and urbane self-presentation.

Glass plate negative of the studio portrait with visible retouching. Positive version of the studio portrait with cigarette and smoke effect.

Technically, however, this was not entirely simple. Cigarette smoke, embers or a small open flame were difficult to capture convincingly with the photographic means of the time. Only a look at the glass plate negative shows that this is a handmade trick. In the area of the cigarette and the smoke, a conspicuous red glaze or masking paint can be seen.

The Red Paint - A Tool Long Before Photoshop

Such interventions were neither exceptional nor a modern invention. As early as the 19th century, photographic manuals described in detail how negatives were worked on with pencil, lacquer, glazes, brushes and knives. The reverse side of a glass negative was an important working surface. There, areas could be covered, weakened or scraped clear again. By the 1920s at the latest, such materials were standard darkroom supplies: catalogues offered "wet masking paint for negatives" for covering areas on the back of the plate that were not meant to appear during printing.

The red colour had a technical purpose. Many photographic papers and reproduction materials barely reacted to red light. That is why red safelight could be used in the darkroom - and why red masking paints were especially suitable for controlling particular areas during printing. What appears on the negative as a crude red trace did not appear red in the finished positive, but as a bright effect.

In this way, the glow of a cigarette, smoke or a small flame could be strengthened after the fact, or made visible at all. At first glance, the finished portrait looks like a successful photograph of a spontaneous moment. But the glass plate negative reveals the construction behind this effect: analogue image editing, long before Photoshop.

Catalogue page for retouching with offers for negative and positive retouching.
Advertising and catalogue page by Photo Porst, Nuremberg, 1929, with products for negative and positive retouching