Best Lenses for Milky Way Photography: Canon Astrophotographers

The most common question asked on Lonely Speck answered for Canon shooters!

What is the best lens for astrophotography? The one that collects the most light.

Below is a list of the highest scoring lenses for untracked nightscape photography and astrophotography. The score is a direct representation of light gathering capabilities based on the formula:

Score = (aperture area) × (angular area) × (suggested shutter speed)

Where the shutter speed is the longest suggested shutter speed in seconds based on the “500 Rule” (500/focal length). Aperture area is the surface area calculation of the clear aperture of the lens and the angular area is the angular field of view in square radians. This score is a mathematical calculation based purely on some simple physics. It doesn’t account for other considerations like the lens’s build quality or optical aberrations but it’s a good gauge of overall light gathering capability.  You can also see the complete list of scores here, complete with calculations and further explanation.

All of the lenses listed here are my personal suggestions for photographers looking to get the absolute best astrophotography results with their camera. If using the given camera mount, these are the lenses that I would use. Most of these lenses are manual focus lenses by Rokinon which also tend to be much more affordable than their autofocus Canon counterparts. Additionally, most of the Rokinon lenses are sharper and tend to exhibit less coma aberration than their Canon counterparts. If you’re willing to learn how to use manual focus, Rokinon lenses are spectacular performers.

If you would like to know more about the thoughts that went into creating this list, please read my article on how to pick a lens for Milky Way photography.

EF Mount (Full Frame and APS-C)

Rokinon 24mm f/1.4 ED AS UMC
The Rokinon 24mm f/1.4 ED AS UMC is the best full-frame lens for astrophotography.

24mm/1.4: Rokinon 24mm f/1.4 ED AS UMC ( Amazon / B&H )

 

  • The best night photography and astrophotography lens you can buy. Excellently sharp, especially when stopped to f/2. Manual focus.
  • My full review of the Rokinon 24mm f/1.4
  • Score: 2869
  • This is my go-to lens for astrophotography on a full-frame DSLR. It’s fast, wide and shows very little aberration problems. Still my personal favorite for Canon full frame DSLRs like the 6D, 5D Mark III and 5DS/R cameras.
  • Sample from the Rokinon 24mm f/1.4:
rokinon-24m-f14-mt-shasta
Made with the Rokinon 24mm f/1.4

35mm/1.4: Rokinon 35mm f/1.4 US UMC ( Amazon / B&H )
or Sigma 35mm f/1.4 DG HSM Art Amazon / B&H )

  • Standard wide angle for tighter landscapes or stitching multiple exposures into larger panoramas. Rokinon is manual focus, Sigma is autofocus.
  • Score: 2084

14mm/2.8: Rokinon 14mm f/2.8 IF ED UMC ( Amazon / B&H )

Rokinon 14mm f/2.8 Review
The Rokinon 14mm f/2.8. Lots of glass for the money.
  • Essential ultra-wide angle for large sweeping landscapes. Manual focus. One of the most affordable full frame nightscape lenses.
  • My full review of the Rokinon 14mm f/2.8
  • Score: 1032
  • Sample image from the Rokinon 14mm f/2.8:
Canon-EOS-6D-Review-6
Made with the Rokinon 14mm f/2.8

 

EF-S Mount (APS-C Only)

Rokinon 16mm f/2.0 AS UMC CS
The Rokinon 16mm f/2.0 offers the best combination of wide field of view and large aperture for astrophotography with APS-C DSLRs.

16mm/2.0: Rokinon 16mm f/2.0 ED AS UMC CS ( Amazon / B&H )

  • The best combination of wide angle and large aperture. Manual focus.
  • Score: 1875

10mm/2.8: Rokinon 10mm f/2.8 ED AS NCS CS B&H )

  • APS-C alternative to the Rokinon 14mm/2.8. Excellent for ultra-wide angle landscapes. Manual focus.
  • Score: 1184

11mm/2.8: Tokina 11-16 f/2.8 AT-X PRO DX II ( Amazon / B&H )

  • Covers the same range as the two previous lenses combined. Excellent super wide angle zoom with autofocus.
  • Score: 1149 (at 11mm)

EF-M Mount (APS-C Mirrorless)

12mm/2.0: Rokinon 12mm f/2.0 NCS CS ( Amazon / B&H )

Rokinon 12mm f/2.0 NCS CS on Canon EOS M
The Rokinon 12mm f/2.0 my favorite lens for astrophotography on a mirrorless system. It’s both fast and wide and it’s very lightweight and compact in size.

 

  • Best lens for astrophotography on a mirrorless system. Nice and compact, best combination of super-wide field of view and large aperture.
  • Score: 2176
  • Sample image from the Rokinon 12mm f/2:
Rokinon-12mm-f2-NCS-CS-Review-Thumb-24
Made with the Rokinon 12mm f/2

22mm/2.0: Canon EF-M 22mm f/2.0 STM ( Amazon / B&H )

Canon EOS M
Canon EOS M and Canon EF-M 22mm f/2.0 lens
  • Surprisingly sharp and extremely compact lens. Also very cheap. Standard wide angle view makes it good for panorama stitches.
  • Score: 1505
  • Sample image from the Canon EF-M 22mm f/2 STM:
IMG_9682-Edit2-2
Made with the Canon EF-M 22mm f/2 STM

8mm/2.8: Rokinon 8mm/2.8 Fisheye II ( Amazon / B&H )

    • Ultra wide angle fisheye that both fast and extremely wide. Fisheye distortion requires you to keep the horizon in the center of the frame unless you want a curved horizon.
    • Excellent when defished.
    • Score: 1237
    • Sample image from the Rokinon 8mm f/2.8 Fisheye:
Alabama Hills Workshop
Made with the Rokinon 8mm f/2.8 Fisheye

235 Replies to “Best Lenses for Milky Way Photography: Canon Astrophotographers”

  1. Dear Ian,

    I have a canon 500D and just starting to go into astrophotography. I am torn between the following lenses:
    – tokina 11-16mm: i heard that it has very bad CA and loses sharpness at 16mm
    – samyang 10mm: im worried about distortion since it’s ultra wide, otherwise i think its sharper than the tokina
    – samyang 16mm: heard amazing reviews about this but worried that 16mm might not be too wide for landacapes/astro.

    I am mainly interested in astro and landscapes. I currently have the 18-55mm lens kit. I am looking for a major improvement.

    Any tips would be highly appreciated.

    Thanks!

    1. I’d love to know this, too. I have the 550D/T2i. It’s quite poor in low light, so I’m hoping a higher max aperture (2.0 or greater) would help with getting a bit more light to the sensor. I have the 14mm f/2.8, and while I haven’t used it extensively, I’ve been a bit underwhelmed with the results. I was considering getting rid of the 14mm and getting the 16mm, instead. Or is there something else I should be considering? I can’t make the jump from the T2i to a more capable camera at the moment, unfortunately.

  2. I’m a little confused with your ranking system, is a lens in the Full Frame category better for any camera or only for the full frame cameras? I guess my real question is, for a Canon 70d for astrophotography would you recommend the 24mm f/1.4 or the 16mm f/2.0?
    Thanks for the article

  3. Hi,
    I bought a Canon 750D for hobby and was thinking about getting the EF-S 18-55mm but as someone mentioned above the max aperture is 3.5 I was wondering if you thought the EF-S 24mm F2.8 STM or the EF-M 22mm f2 STM would be any good (I have a pretty low budget and will start practicing with the standard 18-55 set at 18 as you suggested above but was wondering if either of these would do a substantially better job)
    I was also thinking about getting an adapter and T-Ring for my telescope (it’s not a super duper telescope, just a skywatcher 900/114mm) but was wondering if there is much of an issue of getting dust in the camera body mounting it this way?
    Also (because I am very new to this) are you able to tell me any of the shutter speeds for the above pictures?
    Sorry to bombard you with questions. I appreciate any advice; thanks for your time.

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