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)
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:
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 )
- 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:
EF-S Mount (APS-C Only)
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 )
- 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:
22mm/2.0: Canon EF-M 22mm f/2.0 STM ( Amazon / B&H )
- 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:
8mm/2.8: Rokinon 8mm/2.8 Fisheye II ( Amazon / B&H )
Hi …
The photo of the Milky Way over the sea with Canon is spectacular!
Is it for sale?
I am a Scifi Author and am exploring possibilities for cover page of my new book.
All credits and photo credits will be mentioned in the book if we use this.
best regards
Aachi.
Hi. Do you have any recommended lenses for my Canon 70D or crop cams in general? Would appreciate both budget lenses and or the best for astrophotography. Thanks.
I see theres a Rokinon 8mm f/3.5 UMC Fisheye CS II Lens for Sony E- Mount along with the Rokinon 8mm f/2.8 UMC Fisheye II Lens for Sony E Mount. Which do you think is better? Also compared to the 12mm f/2.0
Thanks
For Sony E Mount, the 8mm/2.8 is the better choice.
Hello Ian
Firstly thanks for all the knowledge you share on this site as well as on YouTube
I really like your philosophy of sharing knowledge. I myself is a serious newbee from India, use a relatively amature body Canon 600D. I am considering getting a budget fast lens with relatively wide angle for my night sky photography learning.
How good is canon’s latest eos 24mm f2.8 pancake.
I know panorama stitching will be required for milky way but I can live with that..
The 24mm/2.8 isn’t ideal but it should work. Honestly, the kit lens set to 18mm/3.5 should be nearly as good so if you have the 18-55mm, start with that.
Hello Ian
Firstly thanks for all the knowledge you share on this site as well as on YouTube
I really like your philosophy of sharing knowledge. I myself is a serious newbee from India, use a relatively amature body Canon 600D. I am considering getting a budget fast lens with relatively wide angle for my night sky photography learning.
How good is canon’s latest eos 24mm f2.8.
I know panorama stitching will be required for milky way but I can live with that..
Hey Ian
I have recently purchased a Canon SL1 and would love to start getting into Astrophotography. What lens would you recommend?
Thanks!
Definitely start out with your kit lens but my first recommendation is the Tokina 11-16mm/2.8
Even over the Rokinon 16mm f2.0? I’m torn between the two…
Cheers