Best astrophotography lenses for the Canon EOS R6 Mark II
5 astrophotography lenses that fit the Canon EOS R6 Mark II (Canon RF mount) — wide and bright for stars and night sky. Sorted brightest-aperture first; every spec from the manufacturer's catalog.
Start with the Canon RF 14mm f/1.4 L VCM. At f/1.4 it is the brightest of the 5 astrophotography Canon RF lenses that fit the Canon EOS R6 Mark II — the full comparison is below.
| Focal | Lens | Buy | Max aperture | Weight | Filter | Type | Coverage | Best for |
|---|---|---|---|---|---|---|---|---|
| 14mm | Canon RF 14mm f/1.4 L VCM | See price on Amazon | f/1.4 | 578 g | — | prime | Full-frame | Wide-angleAstrophotographyLandscapeLow-light |
| 20mm | Canon RF 20mm f/1.4 L VCM | See price on Amazon | f/1.4 | 519 g | 67mm | prime | Full-frame | Wide-angleAstrophotographyStreetLow-light |
| 24mm | Canon RF 24mm f/1.4 L VCM | See price on Amazon | f/1.4 | 515 g | 67mm | prime | Full-frame | Wide-angleAstrophotographyStreetLow-light |
| 24mm | Canon RF 24mm f/1.8 Macro IS STM | See price on Amazon | f/1.8 | 270 g | 52mm | prime | Full-frame | Wide-angleAstrophotographyStreetMacro |
| 10-20mm | Canon RF 10-20mm f/4 L IS STM | See price on Amazon | f/4 | 570 g | — | zoom | Full-frame | Wide-angleLandscapeAstrophotography |
One limit of this table: it lists only Canon RF lenses that mount natively on the Canon EOS R6 Mark II — lenses fitted through an adapter are not included here. See which mounts adapt to which.
Weight & weather sealing on the Canon EOS R6 Mark II
On long approaches the decision is often made by weight, not aperture. Published weights for 5 of the 5 lenses above:
| Lens | Weight | Weather sealing |
|---|---|---|
| Canon RF 24mm f/1.8 Macro IS STM | 270g | None claimed |
| Canon RF 24mm f/1.4 L VCM | 515g | Weather-sealed |
| Canon RF 20mm f/1.4 L VCM | 519g | Not verified |
| Canon RF 10-20mm f/4 L IS STM | 570g | Weather-sealed |
| Canon RF 14mm f/1.4 L VCM | 578g | Weather-sealed |
Packing light? The lightest here is the Canon RF 24mm f/1.8 Macro IS STM at 270g. The lightest weather-sealed option is the Canon RF 24mm f/1.4 L VCM at 515g.
FAQ
What is the best astrophotography lens for the Canon EOS R6 Mark II?
Canon RF 14mm f/1.4 L VCM (14mm f/1.4) is the standout astrophotography option that fits the Canon EOS R6 Mark II. 5 astrophotography Canon RF lenses fit in total — compare them below.
Do these astrophotography lenses fit the Canon EOS R6 Mark II?
Yes — every lens here is a Canon RF mount lens, so it fits the Canon EOS R6 Mark II and covers its full-frame sensor.
What is the lightest astrophotography lens for the Canon EOS R6 Mark II?
The Canon RF 24mm f/1.8 Macro IS STM at 270g (manufacturer-published weight). The lightest weather-sealed option is the Canon RF 24mm f/1.4 L VCM at 515g. Weights for 5 of the 5 lenses on this page are in the weight table above.
Already own the Canon EOS R6 Mark II, shopping for a spare or an upgrade? See price on Amazon
Other uses on the Canon EOS R6 Mark II: Wide-angle (11) Landscape (6) Travel (10) Low-light (12) Pro standard zoom (4) Vlogging (3) Budget (8) Street (7) Everyday (11) Wedding & event (12) Standard prime (4) Macro (5) Portrait (10) Telephoto (15) Sports & action (14) Wildlife (10)
All lenses for the Canon EOS R6 Mark II · the same use across mounts: Astrophotography lenses for Canon RF · all cameras