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Astrophotography lenses for L-Mount

5 astrophotography options that fit Panasonic Lumix S, Leica SL, and Sigma fp full-frame bodies (the L-Mount Alliance) — wide and bright for stars and night sky. Every spec from the manufacturer's own product name and catalog.

Last verified 2026-09-01

Shooting a specific body? Per-camera fits: Leica SL3 · Panasonic Lumix S1R II · Panasonic Lumix S5 · Panasonic Lumix S5 II · Panasonic Lumix S5 IIX · Panasonic Lumix S9 · Sigma fp L.

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FocalLensBuyMax apertureWeightTypeCoverageBest for
14-24mmSigma 14-24mm F2.8 DG DN Art Lens for Leica LSigma 14-24mm f/2.8 DG DN ArtAmazon →f/2.8795 gzoomFull-frameWide-angleAstrophotographyLandscape
18mmPanasonic LUMIX S Series Camera Lens, 18mm F1.8 L-Mount Interchangeable Lens for Mirrorless Full Frame Digital Cameras -Panasonic Lumix S 18mm f/1.8Amazon →f/1.8340 gprimeFull-frameWide-angleAstrophotographyStreetLow-light
20mmSigma 20mm f/1.4 DG DN Art Lens for L MountSigma 20mm f/1.4 DG DN ArtAmazon →f/1.4635 gprimeFull-frameWide-angleAstrophotographyLandscape
24mmPanasonic LUMIX S Series Camera Lens, 24mm F1.8 L-Mount Interchangeable Lens for Mirrorless Full Frame Digital Cameras, Panasonic Lumix S 24mm f/1.8Amazon →f/1.8310 gprimeFull-frameWide-angleAstrophotographyLandscape
24mmSigma 24mm F1.4 Art DG DN Lens for L MountSigma 24mm f/1.4 DG DN ArtAmazon →f/1.4520 gprimeFull-frameWide-angleAstrophotographyStreetLow-light

Weight & weather sealing: which of these can you carry all day?

On long approaches the decision is often made by weight, not aperture. Manufacturer-published weights for 5 of the 5 lenses above:

LensWeightWeather sealing
Panasonic Lumix S 24mm f/1.8310gWeather-sealed (dust- and splash-resistant, rated to -10 °C (Panasonic))
Panasonic Lumix S 18mm f/1.8340gWeather-sealed (dust- and splash-resistant, rated to -10 °C (Panasonic))
Sigma 24mm f/1.4 DG DN Art520gWeather-sealed
Sigma 20mm f/1.4 DG DN Art635gWeather-sealed
Sigma 14-24mm f/2.8 DG DN Art795gWeather-sealed

Packing light? The lightest here is the Panasonic Lumix S 24mm f/1.8 at 310g. The lightest weather-sealed option is the Panasonic Lumix S 24mm f/1.8 at 310g — the same lens.

Weights and sealing from each manufacturer's published spec sheet (per-lens source recorded in the dataset) · methodology

All L-Mount lenses: the full L-Mount index · other mounts: Sony E · Canon RF · Nikon Z · Fujifilm X · Micro Four Thirds.