Rose, Markus Schleinzer's Berlinale 2026 film starring Sandra Huller, is set in the early 17th century. The story exists almost entirely in interior spaces lit by candlelight. Cinematographer Gerald Kerkletz faced a challenge that is both practical and philosophical: how do you light a 17th-century world with 21st-century cinematographic precision?
Real candles present obvious problems. Open flames are fire hazards on a film set. The intensity of real candles is far too dim for cinematography without supplemental lighting, which would destroy the historical authenticity of the image. The light from real candles is inconsistent—the flames flicker unpredictably, and the intensity changes moment to moment. In a scene requiring multiple takes for performance reasons, the lighting would be different every time, making continuity impossible.
Kerkletz's solution was to commission custom prototype LED candles. The ASC Berlinale roundup noted these "cleverly-made prototype LED candles" as a key technical decision. The LED candles would have needed to replicate several properties of real flames: the color temperature—approximately 1800-2200K, warm orange-red light with deep red content—the flicker pattern that mimics real flame movement, and the intensity falloff that real candles produce, where light is bright near the flame and falls off rapidly into shadow.
Building prototype LED candles specifically for one film represents an extraordinary level of commitment to visual authenticity. This was not an off-the-shelf solution. This was custom equipment engineered to solve a specific cinematographic problem. The candles had to look like candles when photographed, had to produce light that behaved like candlelight, and had to be controllable and consistent so that multiple takes would match.
The alternative would have been to use LED panels dressed as candles, or to supplement real candles with off-camera LED panels that would bring up the overall light level. Both approaches would have produced cinematography that was technically compromised. The LED panels would not have integrated seamlessly into the production design. The light would have read as supplemental rather than as the primary source. The 17th-century world would have looked lit rather than illuminated.
Kerkletz's commitment to prototype LED candles is a statement about what period authenticity requires. It is not sufficient to dress the production design to look like the 17th century and then light it with contemporary cinematographic tools. The light itself has to authenticate the period. The prototypes candles maintain the visual continuity of the historical setting. When the audience looks at the images, they are seeing light that behaves like 17th-century candlelight, even though the source is 21st-century technology.
The black-and-white photography that Rose uses reinforces the authenticity argument. By shooting in B&W, Schleinzer eliminates color as a visual marker. The light is the primary visual information. The prototype LED candles are essential because the light itself has to communicate the period. In color cinematography, production design and costume can carry historical information. In B&W, light carries that entire burden. The light has to look like candlelight, unambiguously and consistently.
For cinematographers approaching period work, Kerkletz's approach demonstrates that authenticity sometimes requires custom solutions. Off-the-shelf equipment may not be sufficient to achieve the visual language the story requires. The investment in prototype LED candles—the engineering time, the testing, the integration into the set—is justified because the result is cinematography that is visually and historically authentic in ways that conventional lighting compromises would not achieve.
The prototype candles also provide operational advantages: consistency across takes, safety, precise control over the direction and intensity of light, and the ability to adjust color temperature and flicker patterns in post-production if necessary. But these practical advantages are secondary to the primary purpose: the candles make the 17th-century world visually authentic. The cinematography photographs that authenticity directly.
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