Astrophotography is a fun hobby, but can be tricky too. This is a complete guide for best lens for astrophotography on Sony A7iii.
Picking the right lens can be overwhelming, there are so many great options. You could spend hours reading reviews and searching Google only to find expensive lenses that you don’t need. I decided to make it easy by creating a list of fascinating focal lengths for astrophotography, street photography and low light situations.
Choosing the “best” lens for astrophotography can be difficult, but also a lot of fun. So in this guide I’m going to try and help to decide what your best lens for astrophotography is. There are some things we have to consider with choosing a camera lens for astrophotography, so let’s dig into it.
Best low light lens for sony a7iii
Are you interested in expanding your photography horizons? Have you ever asked yourself what the best lens for astrophotography is on a Sony A7S III? Probably not. But after reading this, you will.
Before getting into the best lenses for astrophotography, let’s consider what kind of lens would work best. There are no hard and fast rules when it comes to lens choice in astrophotography. Your situation is unique to you, your subject and your desires. I don’t believe that any one lens is “best” for all situations. With that said, however, lets discuss the focal length you should choose to capture the night sky.
With the growing popularity of astrophotography, it is becoming more and more common to use a camera lens with a low aperture number. While f/2.0 lenses are certainly not new (in fact, most people consider them to be normal lenses), in the world of astrophotography, they’re considered wide open and very fast.
Best lens for astrophotography sony a7iii
After switching camera systems, I’ve been seeking out the best Sony lenses for astrophotography for my Sony A7III
.
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My wedding photography style has been heavily influenced by my landscape and adventure photography. I love to shoot the night sky, especially with a wedding couple.
Consequently, I’ve been looking for a lens that would be versatile enough to use during the day as well as to photograph the stars at night. EDITOR’S CHOICE
Tokina FiRIN 20mm f/2
The best choice based on size, weight, quality, function and cost, this lens offers great image quality and edge to edge sharpness.CHECK CURRENT PRICE
This meant my search was mainly focused on autofocus Sony FE lenses that were not too heavy or bulky.
The Sony lens lineup has been slowly growing over time, in addition to the numerous off-brand lenses or lenses adapted from DSLRs.
I’ve found the most effective are the native Sony e mount lens options, with the third-party lens manufacturers (such as Sigma, Tokina and Tamron) coming in at a close second. Sony lenses are the smallest, lightest, and best-focusing options.
Best Sony Lenses for Night Photography
1. Sony 16-35mm f/2.8 GM
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Weight: 680g (1.5 lb)
Size (Diameter x Length): 89 x 122mm (3.5 x 4.8 in.)
Filter Diameter: 82mm
Minimum Focus Distance: 0.28m (11″)CHECK CURRENT PRICE
Without a doubt, the 16-35mm focal length range is one of my favorites. Going into this comparison, I knew the Sony 16-35 f/2.8 GM would be a strong contender for a full frame Sony camera.
I’ve often found that you get what you pay for with lenses, and that appears to be true with this Sony FE lens, which is perfect for astrophotography.
It has the flexibility to shoot super wide and also zoom in for a tighter perspective, making it the most versatile lens in this review. The only main compromise is its larger size/weight.https://imasdk.googleapis.com/js/core/bridge3.501.0_en.html#goog_975972102Volume 0%
In terms of build quality, this lens is top notch. It has a moisture-sealed design that works great (from my experience using it in total downpour conditions).
The focus/zoom is smooth and silent (a bonus for video shooters).
Sony A7III + Sony 16-35mm f/2.8 GM | 30sec f/2.8 ISO 6400
Additionally, the autofocus is very quick. All my astrophotography is done using manual focus, but having autofocus makes the lens much more versatile for everyday shooting.
Other drawbacks for this lens are the high price tag, that the maximum aperture is only f/2.8, and that it has a slightly stronger vignette compared to the others.
Having a max aperture of f/2.8 is a bit limiting when it comes to astrophotography, but you can compensate for this with a good high ISO full frame camera like the Sony A7III
. (On an APS-C body like the Sony a6400 (review), you’d definitely need to use a lower ISO and steady your shot with a tripod.)https://505ed0e3a2fa1cb6d2972586a93629d9.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.html
The vignette is mostly correctable in Lightroom but it still appears slightly darker around the edges.
Overall, I’d rank this lens number two out of the four lenses in this post.
Sharpness: Great! // Aberration: Minimal // Vignette: Minimal
2. Sony 24mm f/1.4 GM
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Weight: 445g (1 lb)
Size (Diameter x Length): 75 x 92mm (3 x 3.6 in.)
Filter Diameter: 67mm
Minimum Focus Distance: 0.24m (10″)https://505ed0e3a2fa1cb6d2972586a93629d9.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.htmlCHECK CURRENT PRICE
The recently released (late 2018) Sony 24mm f/1.4 GM lens is another top-quality lens for astrophotography from Sony. This lens balances nicely when paired with the Sony A7III and has a sturdy feel. (See other lenses that work well with Sony a7 series cameras here.)
It’s the eighth lens in the G-Master series and is supposed to be the highest quality of the lenses Sony makes. I think it lives up to the expectations of the GM series and also has some unique features.
The manual aperture ring has a classic quality to it and allows you to get a more tactile control (but can be de-clicked for silent operation).
I’m not sure I find this all that useful but it could be interesting to have a more analog feel when using it.
At 445 grams, it is about 200 grams lighter than the Canon DSLR equivalent. It feels quite lightweight for the quality, which is typical with full frame Sony lens options – Sony FE camera lenses are often marginally lighter than other manufacturer equivalents.
This lens also has a moisture seal and a thin gasket at the lens mount, similar to the Sony 16-35mm f/2.8 above.
Sony A7III + Sony 24mm f/1.4 GM | 15sec at f/2.0 ISO 6400
Auto focus is also very fast, silent, and smooth with a manual focus override available at any time (it almost always nails the focus so I don’t use this feature).
The vignetting on this lens was kind of strong, especially at the widest apertures that are almost always used for astrophotography.
At f/2, the edges appeared about one stop darker than the middle of the frame.
The lens correction in Lightroom is not able to fully overcome this, making it a problem that is a bit frustrating for such a high-end lens. Other than that, image quality is very good, even when used on an APS-C body (but remember the crop factor, which reduces the field of view to around 35mm.)
I also felt that the 24mm focal length of this lens is on the long side for astrophotography, especially when trying to capture the vastness of the milky way.
As mentioned above, I prefer a wider angle view to get more of the sky. This becomes especially important if there isn’t any moonlight to illuminate the landscape.
Overall, I’d rank this number three out of the four lenses reviewed in this post.
Sharpness: Great! // Aberration: Minimal // Vignette: Minimal
3. Zeiss Batis 25mm f/2
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Weight: 335g (12 oz)
Size (Diameter x Length): 81 x 78mm (3.2 x 3.1 in.)
Filter Diameter: 67mm
Minimum Focus Distance: 0.20m (8″)https://505ed0e3a2fa1cb6d2972586a93629d9.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.htmlCHECK CURRENT PRICE
As the lightest lens in this post, the Zeiss Batis 25mm f/2 has a very nice weight distribution when paired with the Sony A7III
.
This lens has been around for a while and offers a nice balance of low aperture and lightweight design.
The barrel diameter, at 81mm, is quite large compared to the 78mm length, giving this lens a strange look, although it balances well on the Sony A7III
. (You can see some other of the best lenses for the Sony a7III here.)
The other thing that stands out is the unique smooth rubber focus ring. Unlike many lenses that have ridges on the focus ring, the Zeiss has a smooth but sticky rubber band.
It felt smooth to operate but did make a slight rubbing noise when rotated.
Sony A7III + Zeiss Batis 25mm f/2 | 15sec at f/2.0 ISO 6400
The Batis series also has a digital display, showing the hyper-focal distance on the lens itself. It indicates the exact focus distance as well as the nearest and farthest distance that the lens is in focus.https://505ed0e3a2fa1cb6d2972586a93629d9.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.html
This is a cool feature but the display was difficult to read, so I found it a bit frustrating.
The main advantages of the Zeiss are its lightweight design, clean feel, and large aperture.
Disadvantages include some aberration issues, stronger than expected vignette, and maybe a slightly lower light transmission than other lenses at the same settings.
I couldn’t tell if it was actually producing a darker image with the same exposure settings, or if the vignette just made it look darker.
Overall, this was my least favorite lens of the ones in this review for night photography.
Sharpness: Average (aberration could be affecting my perception of sharpness) // Aberration: Some // Vignette: Strong
4. Tokina FiRIN 20mm f/2
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Weight: 464g (1 lb)
Size (Diameter x Length): 73 x 81mm (2.9 x 3.2 in.)
Filter Diameter: 62mm
Minimum Focus Distance: 0.28m (11″)https://505ed0e3a2fa1cb6d2972586a93629d9.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.htmlCHECK CURRENT PRICE
The Tokina FiRIN 20mm f/2 is the second iteration of this ultra wide angle lens, this time adding in autofocus.
Having the AF capability makes this lens much more appealing because it can be used for more than just astrophotography or slow-moving subjects.
The AF version is optically the same as the MF design and produces a very high-quality image.
I was very happy with the build quality, especially the size of this lens (the smallest lens reviewed here).
It is a little heavier (20 grams more than the Sony 24mm f/1.4) and not as silent (autofocus noise) as the other lenses but remains competitive with a maximum aperture of f/2.
Sony A7III + Tokina FiRIN 20mm f/2 | 15sec f/2.0 ISO 6400
I was very happy with the sharpness, minimal vignette, and wide focal length. Additionally, I liked the sturdy feel of this lens.https://505ed0e3a2fa1cb6d2972586a93629d9.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.html
The only other issue I noticed was that the autofocus is not as fast as the native Sony wide angle lenses.
A quick assessment revealed some autofocus lag. As an astrophotography lens, this isn’t important, but any lens I buy should serve more than one purpose.
Overall this lens has some excellent features and is my first choice of the four lenses I tested.
Sharpness: Great // Aberration: Minimal // Vignette: Minimal
Choosing a Lens for Astrophotography | Factors to consider
Sony A7III
+ Sony 16-35mm f/2.8 GM | 15sec f/2.8 ISO 3200
After reviewing a long list of options for the best lens for astrophotography, I refined my search and tested these four lenses:
- Sony 16-35mm f/2.8 GM
- Sony 24 f/1.4 GM
- Zeiss Batis 25mm f/2
- Tokina FiRIN 20mm f/2
If you’re in a hurry, skip to the bottom to see my conclusion about which one is best! The main review factors I used are:
- Focal length
To shoot the stars, I typically prefer a focal length of 24mm or wider, with the sweet spot being around 20mm.
When you get above 24mm, it can become more difficult to shoot at longer shutter speeds because you start to get motion blur in the stars due to the rotation of the earth.
This can be done tastefully, but my preference is for a wide angle lens shot with tack-sharp stars.
Extremely wide focal lengths are great for getting a full view of the night sky. However, it can get more difficult to get an interesting composition because they reduce the emphasis on the foreground. It’s also harder to find ultra wide angle lens options for Sony APS-C cameras, for truly immersive astrophotography.https://505ed0e3a2fa1cb6d2972586a93629d9.safeframe.googlesyndication.com/safeframe/1-0-38/html/container.html
Distortion can be a problem with super wide-angle lenses. A rectilinear 14mm lens is the max I would consider.
How about if you want to take a photo of the moon or a particular subject in the night sky? Check out this article on astrophotography using a DSLR and a telescope.
- Aperture
My main requirement is a wide angle lens with a maximum aperture of 2.8 or greater. I find the sweet spot to be about f/2. This brings in a lot of light but allows both the foreground and the stars in the night sky to be in focus.
Shooting at f/1.4 lets in a lot of light, which is great. However, you have to nail the focus exactly to retain sharpness. I like to give myself just a little more flexibility and shoot at f/2.
- Aberration and Vignetting
I also want a lens that is very sharp, has minimal vignetting, minimal aberration, and excellent overall image quality.
(Learn more about lens vignetting here.)
There are a lot of different types of aberration but for this review of the best Sony lens for astrophotography, I kept it simple and summarized each lens with a general assessment: good or bad.
Best Sony Lens for Astrophotography | Conclusion
Sony A7III + Sony 16-35mm f/2.8 GM | 15sec f/2.8 ISO 6400
Based on my experience testing these four lenses, I’ll be adding the Tokina FiRIN 20mm f/2 lens to my kit. It seems to be the best balance of size, weight, quality, function, and cost.
All of these lenses are great options, but the Tokina FiRIN 20mm really fit my style of shooting. It has the quality I’m looking for while still being less than $1,000.
I’d love to hear your opinion in the comments if you came to a different conclusion or have another suggestion of the best lens for astrophotography on a Sony mirrorless camera.
