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Low-light lenses for Canon RF mount

17 low-light options that fit Canon EOS R series (full-frame R5/R6/R8) and APS-C (R7/R10/R50) — fast apertures (f/1.8 and brighter) for dim conditions. Every spec from the manufacturer's own product name and catalog.

Last verified 2026-09-01

Shooting a specific body? Per-camera fits: Canon EOS R · Canon EOS R1 · Canon EOS R10 · Canon EOS R100 · Canon EOS R3 · Canon EOS R5 · Canon EOS R5 Mark II · Canon EOS R50 · Canon EOS R6 · Canon EOS R6 Mark II · Canon EOS R7 · Canon EOS R8 · Canon EOS RP · Canon EOS R6 Mark III · Canon EOS R50 V · Canon EOS R6 V.

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FocalLensBuyMax apertureWeightTypeCoverageBest for
14mmCanon RF14mm F1.4 L VCMCanon RF 14mm f/1.4 L VCMAmazon →f/1.4578 gprimeFull-frameWide-angleAstrophotographyLandscapeLow-light
16mm16mm F1.4 DC DN for RF MountSigma 16mm f/1.4 DC DN ContemporaryAmazon →f/1.4415 gprimeAPS-CWide-angleStreetLow-lightVlogging
17-40mmSigma 17-40mm F1.8 DC | Art for Canon RF, BlackSigma 17-40mm f/1.8 DC ArtAmazon →f/1.8560 gzoomAPS-CEverydayStandard primeLow-lightPro standard zoom
20mmCanon RF 20mm f/1.4 L VCMAmazon →f/1.4519 gprimeFull-frameWide-angleAstrophotographyStreetLow-light
23mm23mm F1.4 DC DN RF MountSigma 23mm f/1.4 DC DN ContemporaryAmazon →f/1.4345 gprimeAPS-CEverydayStreetLow-light
24mmCanon RF24mm F1.4 L VCMCanon RF 24mm f/1.4 L VCMAmazon →f/1.4515 gprimeFull-frameWide-angleAstrophotographyStreetLow-light
28-70mmCanon RF 28-70mm Body f/2 L USM Lens - BlackCanon RF 28-70mm f/2 L USMAmazon →f/21430 gzoomFull-framePro standard zoomWedding & eventLow-light
30mmSigma 30mm F/1.4 DC DN Contemporary Lens for Canon RF Mount (APS-C)Sigma 30mm f/1.4 DC DN ContemporaryAmazon →f/1.4285 gprimeAPS-CStandard primeEverydayLow-light
35mmCanon RF35mm F1.4 L VCM LensCanon RF 35mm f/1.4 L VCMAmazon →f/1.4555 gprimeFull-frameStreetEverydayLow-lightWedding & event
45mmCanon RF45mm F1.2 STM, Standard Lens, BlackCanon RF 45mm f/1.2 STMAmazon →f/1.2346 gprimeFull-frameStreetEverydayLow-light
50mmCanon RF50mm F 1.2L USM Standard Lens, BlackCanon RF 50mm f/1.2 L USMAmazon →f/1.2950 gprimeFull-framePortraitLow-lightWedding & eventStandard prime
50mmCanon RF50mm F1.4 L VCMCanon RF 50mm f/1.4 L VCMAmazon →f/1.4580 gprimeFull-framePortraitLow-lightStandard primeWedding & event
50mmCanon RF50mm F1.8 STM Lens, Mirrorless Lens, Fixed Focal Length, Compatible with EOS R Series Mirrorless Cameras, CompacCanon RF 50mm f/1.8 STMAmazon →f/1.8160 gprimeFull-frameStandard primeBudgetLow-light
56mm56mm F 1.4 DC DN for RF MountSigma 56mm f/1.4 DC DN ContemporaryAmazon →f/1.4280 gprimeAPS-CPortraitLow-light
85mmCanon RF 85mm F1.2 L USM Lens, BlackCanon RF 85mm f/1.2 L USMAmazon →f/1.21195 gprimeFull-framePortraitWedding & eventLow-light
85mmCanon RF85mm F1.4 L VCM Mirror LensCanon RF 85mm f/1.4 L VCMAmazon →f/1.4636 gprimeFull-framePortraitLow-lightWedding & event
135mmCanon RF135mm F1.8 L is USMCanon RF 135mm f/1.8 L IS USMAmazon →f/1.8935 gprimeFull-framePortraitTelephotoLow-lightWedding & event

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 17 of the 17 lenses above:

LensWeightWeather sealing
Canon RF 50mm f/1.8 STM160gNone claimed
Sigma 56mm f/1.4 DC DN Contemporary280gMount gasket only
Sigma 30mm f/1.4 DC DN Contemporary285gMount gasket only (Sigma publishes 285g for the RF mount (265g E / 275g X) — RF figure used)
Sigma 23mm f/1.4 DC DN Contemporary345gMount gasket only
Canon RF 45mm f/1.2 STM346gNot verified (weight from the Canon RF lens-mount list table; sealing not stated on the source page)
Sigma 16mm f/1.4 DC DN Contemporary415gMount gasket only
Canon RF 24mm f/1.4 L VCM515gWeather-sealed
Canon RF 20mm f/1.4 L VCM519gNot verified (weight from the Canon RF lens-mount list table; sealing not stated on the source page)
Canon RF 35mm f/1.4 L VCM555gWeather-sealed
Sigma 17-40mm f/1.8 DC Art560gWeather-sealed
Canon RF 14mm f/1.4 L VCM578gWeather-sealed
Canon RF 50mm f/1.4 L VCM580gWeather-sealed
Canon RF 85mm f/1.4 L VCM636gWeather-sealed
Canon RF 135mm f/1.8 L IS USM935gWeather-sealed
Canon RF 50mm f/1.2 L USM950gWeather-sealed
Canon RF 85mm f/1.2 L USM1195gWeather-sealed
Canon RF 28-70mm f/2 L USM1430gWeather-sealed

Packing light? The lightest here is the Canon RF 50mm f/1.8 STM at 160g. The lightest weather-sealed option is the Canon RF 24mm f/1.4 L VCM at 515g.

Weights and sealing as published for each lens — 12 from the manufacturer's own spec page, 5 from a published lens database or review quoting the maker's figure (per-lens source recorded in the dataset) · methodology

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