We can help you find the best zoom lens on the market. We can help you understand what a zoom lens is. A zoom lens allows the photographer to change the focal length, and they can be wide-angle, telephoto or somewhere in between.

It's important for a photographer to have the best zoom lens in their inventory, especially when they're partnering up with a great camera. Their ability to view deep into the universe can rival a few telescopes on the market because of their longer lens.

This guide is only for the best zoom lens on the market, so if you'd like to check out our round-up of the best, please do. If you're planning on getting a zoom lens, it's a good idea to consider one of the best camera backpacks and one of the best tripods.

Whether you're looking for the best camera deals or the best photo editing apps, we have more related content. All you have to do is read the round-up below to find out what makes a good zoom lens.

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Best Sony zoom lens for image quality

Sony FE 70-200mm f/2.8 G Master OSS

(Image credit: Sony)

Sony FE 70-200mm f/2.8 G Master OSS

It's a fantastic piece of kit that compensates for the fact that it isn't the longest.

There is a strong argument to be made that a quality 70-200mm should be in every photographer's kit bag.

The 2.9x zoom range makes it practical, compositionally speaking, and the f/2.8 lens gives you plenty of incoming light, allowing you to shoot either shorter shutter speeds or lower ISOs at night. You'll get a little more latitude with optical image stabilization.

This lens is deserving of the G stamp and we think it is. It is worthy of being on our best zoom lens list. There's no doubt that it's sharp with the open lens and that it improves throughout its range, but mostastrophotographers will be at the opened up end.

It is well constructed. The all-metal body feels tough and it is unlikely to be sternly tested, but if you want an all-purpose zoom, this is the one for you. We only had one hesitation. In terms of image quality, the sigma 70-200mm f/2.8 DG OS HSM is better than the others. It's worth it to see which one you prefer.

Best Sony lens for deep sky photography

Sony FE 200-600mm f/5.6-6.3 G Master OSS

(Image credit: Sony)

The zoom lens from Sony is a titan and we are not going to hold back. If you're looking for a bit of versatile gear that will give you exactly what you want, this high-quality lens is definitely the one.

This is a lens that stands up well to the torture test of being shot with a fully open lens, which is a must-have if you are looking for a lens for astronomy.

The 600mm maximum zoom is one of the benefits. The shutter speed and ISO will both cost you a bit of light, but you can only open the aperture as wide as f/6 once you crank it all the way in. When you consider the potential weight of a 600mm lens, as well as the image quality capabilities of modern sensors, the compromise is worth the cost, especially if you have a recent, full-frame camera capable of decent image quality. There are some amazing photographic opportunities that can be had with the large amount of magnification. The lens is just a shade under $2,000.

Do you think there are drawsbacks? You will need to add a camera if you have the 4.7 lbs weight. It is likely that you will need to use a powerful star tracker for the best results.

Best medium-telephoto Nikon lens

Nikon Z 70-200mm f/2.8 S-line lens image on wooden table

(Image credit: Andy Hartup)

Some bold claims have been made about the range of S-line lens. The S-line claims to be the best zoom lens for the Z-mount, with edge-to-edge sharpness and excellent optical quality.

The RF-mount lens is a bit cheaper than Canon's identically specified RF-mount lens, but it has already built up a reputation for sharpness, as we can attest to in our review. If image quality is your priority, and you're committed to the Z platform, it's hard to imagine why you'd look elsewhere for this type of mid-telephoto lens. You can go off-brand if you want, but you have to get the FTZ mount and the lens, and the sigma version doesn't have the reputation of the Nikon version.

The Nikkor Z 70-200mm f/2.8 S-Line is one of the best zooms, with a big maximum aperture and optical image stabilization, but we also like the Fn buttons and futuristic panel on the top, which replaces the old ones. This can be configured to show focus distance, but other options are also available. The control ring on the lens allows you to be more flexible.

The argument for extreme focal distances is always valid, but at 200mm this doesn't fill that brief. This is a lens that won't overwhelm most star trackers and will produce images that will survive all but the most assertive of crops. It is a future classic.

Best Nikon all-rounder for DSLRs

Nikon 70-200mm f/2.8 FL ED VR lens on a tripod

(Image credit: Jason Parnell-Brookes)

Is it too early for a camera to refer to a DSLR lens as a classic? It is obvious that this beauty of a lens is deserving of the title. It is well worth searching online auctions for well cared for examples of this excellent lens, which has been a mainstay of professional photographers for years, and is nearing its fifth birthday.

The kit's largest f-stop of f/2.8 provides plenty of light and is built for full-frame cameras. It's status as one of the best zoom lenses is due to the fact that it allows for a lot of light to be transmitted. It is portable at 3.1 lbs and doesn't require a high-end motorized star tracker, even though it does have a dependency on the camera.

The only thing we can say about this lens is that if you want to get a Z-series camera, you should spend your money on the newer Z-mount S-Line 70-200mm, which is sharper than this one.

Best Nikon lens for deep sky photography

Nikkor AF-S 200-500mm f/5.6E ED VR lens on a tripod with a blue background

(Image credit: Jason Parnell-Brookes)

The amount of lens for the money is astounding. In our review, we found that this up-to-the-second piece of glass offers a lot of bang per buck. Wildlife photographers need to think about their prayers.

Astrophotographers are also included. It is also not bad at that. The focal length can go up to 500mm. The constant aperture means less light gets to the sensor as you zoom in. If you really want that extra stop of light you will need to add an extra zero to the price.

The weight is a factor that should be considered when selecting the best zoom lens. The Sigma 150-600mm is a little heavier at 5.1 lbs. It's worth remembering that using a lens with this kind of formidable focal length will generally require a pro-grade tracker anyways, even if you notch you over the limit in terms of tripod or star tracker capacity.

There is only one caveat. The price of the sigma 150-600mm f/6-6.3dg OS HSM is similar to that of the other one. It's a bit darker when you zoom all the way in, but you still get another 100mm of reach and a reduction in weight.

Best budget mid-telephoto lens

Sigma 70-200mm f/2.8 DG OS HSM

(Image credit: Sigma)

Sigma 70-200mm f/2.8 DG OS HSM

It is an excellent quality, affordable price and bright maximum aperture.

You used to buy a lens from the same company that made your camera if you couldn't afford to stay on-brand. The 70-200mm f/2.8DG OS HSM is one of the best zooms out there, and it's a beautiful case in point, because it's one of the high-end ones.

It's more affordable than other zooms in this list, at just under the $1500 mark, and it's comparable to legacy DSLRs with the same focal length and aperture combination. It is very similar to Canon andNikon's Z and RF mount lens.

We thought there were a lot of good points when we tested the sigma 70-200mm f/2.8 DG OS HSM, including a large maximum aperture that will allow you to keep either shutter speed or ISO under control. There are compromises with all equipment The biggest factor here is weight, which makes it hard to get a long lens such as the Nikkor 200-500mm or the sigma 150-600mm. You are giving up more than a stop at the long end in both instances. If you don't want an up-to-the-second lens, this is a good option.

Best for travel photography

The Canon RF 24-240mm zoom lens

(Image credit: Future)

Thanks to its 10x zoom range, this lens has a lot of practical uses. 24mm is a proper wide-angle, lending itself to a range of general-purpose travel photography, while 240mm is a proper telephoto, allowing you to do all but the most ambitious wildlife or sports photography. It's for around the $900 mark.

We thought in our review of the Canon 24-240mm that it has a lot of work to do, since it's pretty impressive in that regard. The Sigma 150-600 is 3.5 times longer in terms of maximum focal length and has the same largest aperture when zooming in, but it is less expensive. For the money, there are better alternatives to the Canon 240-240mm.

The size and weight of the 150-600mm makes it a great choice for photographing people in foreign cities. If you want to shoot the night sky with an RF-mount lens, we recommend looking at either Canon or sigma.

Best long-range budget lens

Sigma 150-600mm f/5-6.3 DG OS HSM C

(Image credit: Sigma)

This is a heck of a lot of lens, and you can't deny that for the price. The longest lens on the list is 600mm, which is enough for deep sky photography. It is very much at the long end of what can be achieved with a DSLR or a lens. This is the only thing that beats the 300-800mm, or the 200-500mm, or the Canon RF 100500mm.

The cons need to be out of the way. If you want to transition from the world of ultra-wide, ultra-large-aperture photography, the maximum zoom of f/6.3 isn't a lot of fun. You will need to be on a high-end star tracker in order to get steady results at this lens' long end, which means buying this lens is probably the beginning of some serious work. There will be a fair amount of trial and error here.

The positive things? The large zoom range allows for a lot of different compositions. The 600mm focal length is practical, astronomically speaking, and although better image quality is certainly possible at this extreme focal length, you will have to shell out a lot for it. The 200-400mm is just as good but costs $7,000. This is a great buy for people on a budget, with multiple lens mounts, and at a price many can afford.

Best Canon zoom lens

Lens, tripod mount, and hood image for Canon RF 70-200mm f2.8 lens review_Lauren Scott

(Image credit: Lauren Scott)

Canon's introduction of the RF-mount for its pro range of mirrorless cameras was greeted with cautious optimism by photographers until they got their hands on Canon's new pro-series lenses. Canon's L-series lens have always been the envy of other photographers, and the L-series RF lens can take the series to a whole new level.

There is a case in point. It's expensive but we found the image quality amazing. Sharpness and contrast are abundant from the center to the corner of the picture. If you are in the market for a lens that is better suited for deep sky photography, this is the one for you.

There are some nice features, apart from great image quality and fast maximum aperture. The control ring can be tailored to adjust many camera settings. The Canon version has a front element that goes out when you zoom in. That means the lens is just 146mm long when it is not in use.

You pay for the quality, of course, and for this amount of money, you could easily afford a much longer zoom lens, which would be ideal for photographing stars. If image quality is a hill you are happy to die on, and if you are a photographer with pro ambitions, your Canon RF-mount camera will never be happier than when this lens is attached.

You need to know a few things before you buy a zoom lens. The length of your lens is determined by the amount of millimetres you have. Super-telephoto is usually considered to be anything longer than 400mm. It starts with a reasonable amount of magnification and can zoom in to 300mm, which is a significant amount of magnification.

When shopping for a zoom lens, there are other factors to consider. The bigger the hole in the lens that light passes through, the more light can get through at the same time, with a correlation between shutter speed and ISO. An f/2.8 is larger than an f/ 5.6 and is described as an f-stop. If you are planning to shoot long-exposure tracked shots, we recommend you use a lens with the biggest aperture. If you want to take a simple picture of the moon, you can use a cheaper lens with a smaller focal point.

You should also consider image stabilization, also known as IS, VR, OS, and OSS, when looking at the best zoom lens. If you want to shoot images at night without a tripod, the lens will detect tiny amounts of movement and move its glass elements within to keep your image stable.

Those looking for equipment that will travel long distances in a camera backpack should be careful with their weight. If you want to use your lens for deep-space photography on a motorized star tracking system, you will need to be careful about how much you use.

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