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Standard prime lenses for L-Mount

8 standard prime options that fit Panasonic Lumix S, Leica SL, and Sigma fp full-frame bodies (the L-Mount Alliance) — the natural field of view — first prime territory. 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
17-40mmSigma 17-40mm F1.8 DC | Art for L MountSigma 17-40mm f/1.8 DC ArtAmazon →f/1.8535 gzoomAPS-CEverydayStandard primeLow-lightPro standard zoom
28-45mmSigma 28-45mm F1.8 DG DN for L MountSigma 28-45mm f/1.8 DG DN ArtAmazon →f/1.8960 gzoomFull-frameStandard primeEverydayLow-lightPro standard zoom
50mmLeica Summicron-SL 50mm f/2 ASPH. Lens (L-Mount)Leica SL 50mm f/2 APO-SummicronAmazon →f/2740 gprimeFull-frameStandard prime
50mmPanasonic LUMIX S Series Camera Lens, 50mm F1.8 L-Mount Interchangeable Lens for Mirrorless Full Frame Digital Cameras, Panasonic Lumix S 50mm f/1.8Amazon →f/1.8300 gprimeFull-frameStandard primeBudgetLow-light
50mmPanasonic LUMIX S PRO 50mm F1.4 Lens, Full-Frame L Mount, LEICA Certified, Dust/Splash/Freeze-Resistant for Panasonic LUPanasonic Lumix S PRO 50mm f/1.4Amazon →f/1.4955 gprimeFull-framePortraitLow-lightWedding & eventStandard prime
50mmSigma 50mm F1.4 DG DN F for L MountSigma 50mm f/1.4 DG DN ArtAmazon →f/1.4670 gprimeFull-framePortraitLow-lightStandard primeWedding & event
50mmSigma 50mm F 1.2 DG DN for L MountSigma 50mm f/1.2 DG DN ArtAmazon →f/1.2745 gprimeFull-frameStandard primePortraitLow-light
65mmSigma 65mm F2.0 DG DN for L-MountSigma 65mm f/2 DG DN ContemporaryAmazon →f/2405 gprimeFull-frameStandard primeEverydayPortrait

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

On long approaches the decision is often made by weight, not aperture. Published weights for 8 of the 8 lenses above:

LensWeightWeather sealing
Panasonic Lumix S 50mm f/1.8300gWeather-sealed
Sigma 65mm f/2 DG DN Contemporary405gWeather-sealed
Sigma 17-40mm f/1.8 DC Art535gWeather-sealed
Sigma 50mm f/1.4 DG DN Art670gWeather-sealed
Leica SL 50mm f/2 APO-Summicron740gWeather-sealed
Sigma 50mm f/1.2 DG DN Art745gWeather-sealed
Panasonic Lumix S PRO 50mm f/1.4955gWeather-sealed
Sigma 28-45mm f/1.8 DG DN Art960gWeather-sealed

Packing light? The lightest here is the Panasonic Lumix S 50mm f/1.8 at 300g. The lightest weather-sealed option is the Panasonic Lumix S 50mm f/1.8 at 300g — the same lens.

Weights and sealing as published for each lens — 5 from the manufacturer's own spec page, 3 from a published lens database or review quoting the maker's figure (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.