A lit poster is not the same poster as the one you see in a room's ambient light. The right lighting reveals contrasts, lifts colors, and gives the work the presence it loses in indistinct dimness. Bad lighting flattens nuances, slowly fades the paper, and creates glare on the glass. The gap between the two is huge and rests on three technical decisions: the fixture type, the LED color temperature, and the distance between source and poster.

This article is not about professional museum lighting, which requires serious budget and rare skills. It is about simple domestic lighting, based on lamps available at standard outlets, which is plenty to showcase a poster printed on art paper. Rule of thumb: a good LED picture light costs between 80 and 200 euros, lasts ten years, and does more for poster presence than swapping the frame.

Fixture type: the picture light

The most effective fixture to light a poster is the picture light, mounted above the frame, pointed down. Its light hits the poster obliquely, revealing paper texture and avoiding glass glare. Classic brass or aged-copper gallery-style models (30 to 60 cm long, articulated arm, half-cylindrical metal shade) do the job perfectly. Honsel, Eglo, Modus for affordable options; Casambi, Astro Lighting for more design-led options.

Alternatives: spots and tracks

If the picture light is wrong (too classical aesthetic, installation constraint), orientable ceiling spots aimed at the frame at 30 degrees give a comparable result. Ideal distance between ceiling and poster: 1.50 to 2 meters. Spot too close, lighting becomes punctual; too far, it dilutes. Track lights allow position and angle adjustment, particularly useful for multi-piece gallery walls.

Avoid: direct frontal lighting (spot facing the poster like a projector), which systematically creates glass or plexiglass glare. Also avoid: string lights or LED strips stuck on the frame, which produce noisy, unflattering lighting.

Color temperature: 2700K vs 4000K

LED color temperature is measured in kelvins (K). The lower the value, the warmer the light. A 2700K LED (incandescent equivalent) gives an orange-yellow light, warming up warm colors (ochre, terracotta, brown) and softening contrasts. A 4000K LED (neutral, office-light type) gives whiter light, more faithful color rendering but hardening compositions. A 6500K LED (daylight) is too cold for interior decoration, avoid for lighting a poster.

The choice between 2700K and 4000K depends on the work. An Art Deco poster in warm tones (PLM Riviera, Cassandre liners) gains presence under 2700K. A Bauhaus piece in saturated primary colors, or a white-ground botanical, reveals better under 3500-4000K, more faithful. For general use, 3000K (in between) is the safest compromise. Color Rendering Index (CRI): aim for CRI >= 90 minimum, ideally 95+. That makes the difference between a cheap LED that dulls works and a quality LED that reveals them.

Distance and intensity

Distance from source to poster depends on power. For a 5 to 8 watt LED picture light, ideal distance: 30 to 50 cm above the frame. For a 7 to 10 watt ceiling LED spot, distance: 1.50 to 2 meters. Intensity should suffice to light the poster without saturating the glass. Empirical test: if you see your own reflection looking at the poster from 2 meters, ambient light is too strong or lighting is misplaced.

A 200-euro frame under indistinct lighting matches a 50-euro frame well lit. Light counts as much as material.

Preserving paper: avoiding fading

Modern LEDs emit very little UV, making them broadly compatible with the conservation of works on paper. But prolonged exposure to overly intense lighting (even LED) can accelerate ink fading, particularly saturated reds and blues. Standard museum recommendations: do not exceed 150 lux of continuous lighting on the work, equivalent to a 5-8 watt domestic LED at 50 cm. For posters in direct sunlight (south wall without curtain, south-facing window), plan minimal complementary lighting in the evening, and do not leave the lamp on 24 hours a day.

At Montmartre Poster, the posters in the full selection are printed on 275 gsm art paper with pigment-based inks certified for light resistance. All our frames from the frames and accessories page integrate anti-glare plexiglass that filters a significant share of residual UV, extending work lifespan under normal domestic lighting.