The Good. For an affordable camera, the Sony a7 III is jam-packed with features you'll find in the more expensive bodies. It's got the autofocus power to keep up with many action shots and the very wide ISO range of the $4k Sony a9. It's got the design, full-frame sensor, Bionz X image processor, video features and image stabilization of the $3k Sony a7r III. But most importantly, it's got talents of its own. Its Eye AF has such unbelievable tracking it's able to detect your subject's eye even when he or she is not completely facing the camera. It also has excellent noise handling and a pleasantly surprising long battery life. All of that for only $2k seems too good to be true. Of course, it does have its limitations, which we will talk about below in the bad section, but in many ways, it is a dream package.
The Bad. While the bad stuff we're about to mention aren't not necessarily bad, there are some of the things about this camera that make us hesitate and consider the more expensive options. Let's just call them limitations. Granted, we consider ourselves experienced shooters, and these won't matter as much to a beginner or even a hobbyist. The 24.2-megapixel resolution might be a deal-breaker to pros. As is its color rendering, which tends to lean on the yellow side, and its dynamic range, which isn't as impressive as the a7r III's.
The Bottom Line. The Sony a7 III may not quite be in the pro league, but it's certainly got some pretty badass, pro-level features that are a treat to any entry to enthusiast photographer, and practical for experienced shooters to have. It has its limitations, yes, and there are some shooting situations that it might not be the best body for, but with the right glass and the right talent behind it, it can be a powerful tool for shooting portraits, landscapes, events, travel and even some action shots.
Pick This Up If... you're an enthusiast looking to invest in a camera with many pro-level features, an experienced hobbyist looking to upgrade to a full-frame, or a semi-pro who doesn't have a big budget. If you are a beginner photographer and don't mind shelling out a few thousand bucks (camera + lenses), this is also a great choice.
Let's just get this out of the way now: next to the Sony a7R III, which we couldn't praise highly enough, Sony's 'basic' a7 III seems a little forgettable. Although it does match the higher end model in most respects and is considerably cheaper at $1000 less, testing the Sony a7 III after spending some time bonding and falling madly in love with the a7r III makes the experience a little dissatisfying.
To be fair to the a7 III, however, it's not actually meant to compete with the a7R III, but rather to provide a more affordable, hobbyist-level alternative. As one, it's fantastic. So to give it its due, we will try to review it as separately from the a7R III as we possibly can.
From time to time, we will be comparing the two for the sole purpose of helping you decide which camera might be better for your needs, but most of the time, we will be judging the a7 III based on its own merits. Those include its awesome autofocus, its banging battery life, and the fact that it's got a 24.2-megapixel full-frame sensor in a mirrorless body.
And with that in mind, let's delve right in.
Alongside the Sony a7 III, we had the Sony FE 24-70mm F2.8 GM and the Sony FE 70-200mm F2.8 GM OSS on loan from Sony. We tested the body with these two lenses as well as the Tamron 28-75mm F/2.8 Di III RXD, which we already reviewed HERE. Be on the lookout for our reviews of the other two lenses, following this camera review.
24 MP BSI full-frame sensor
14-bit raw output
ISO expandable to 204,800
4K HDR video oversampled from 6K
1080p at up to 60 fps
5-stop, 5-axis in-body stabilization
14-stops video dynamic range
15-stops for stills
10 fps stills shooting with active AF/AE
silent or mechanical shutter
Z Battery achieves up to 710 images on single battery charge
693 point focal-plane phase-detection autofocus
425 contrast AF points
177 JPEG Image buffer
XGA OLED viewfinder with approximately 2.3 million dots
Joystick control and touchscreen
Dual SD card slots (one UHS-II)
WHAT'S IN THE BOX
Rechargeable Battery (NP-FZ100)
AC Adaptor (AC-UUD12)
Accessory shoe cap
Micro USB cable
BUILD QUALITY & DESIGN
Physically, the Sony a7 III has a lot in common with the Sony a7r III, so much so it might be hard to tell which one is which if you're not overly familiar with their individual bodies. It's made of a lightweight yet tough magnesium alloy cover, weighs about 1.7 lbs (just slightly heavier than a7r III's 1.3 lbs), and boasts six lens mount screws as well as sealing on major buttons and dials for resistance against the elements.
The a7 III features a nice, user-friendly design and button configuration, with a multi-selector joystick to quickly change focus points and even manually trigger the Eye AF, an amazing battery life of up to 610 shots and 115 minutes worth of footage when using the viewfinder, and a dual card slot, one of which is UHS-II compatible. The dials, of course, have a nice tactile feedback and offer enough resistance to prevent accidental turns.
While we've heard some folks say that its weather sealing is not as good as the a7r III, we didn't get a chance to test the body out in extreme weather to attest to that. What we can say is that we tested this in several desert locations where there is more dust going around than usual, and we never had an issue with dust getting in the lens and the camera. And we were changing lenses several times.
Similarly, though we can say that mounting Sony lenses to this body didn't feel as snug and tight as it did with the a7r III, we still cannot fully confirm that this is an issue with the mount itself, as we didn't exactly use the same lenses to serve as our constant factor.
Ergonomics-wise, it's excellent. The front grip is pronounced, securing your hold without forcing you to exert a lot of effort in securing it in your hand, and it's light enough that you won't feel weighed down.
There are several customizable buttons--which you should set-up before you take the camera out for a test run--as well as the Fn button for the Function menu to give you quick access to your most used settings. And of course, there's the multi-selector or AF joystick, which lets you easily change focus points without taking your eyes off the EVF and also manually trigger the Eye AF whenever you need it. As a nice extra, it allows silent shooting with the electronic shutter feature to prevent camera shakes in crucial situations.
Though probably one of the best things about this camera's handling is the fact that despite all that power and capability, it's all nicely wrapped in a compact and lightweight body. Shooting with this camera is so effortless, it's almost as if you're not even trying.
MENUS & DISPLAYS
Granted, if you haven't used a Sony mirrorless before or are not quite as familiar with its menus and user interface, it might be worth taking it out for a few practice shoots. Don't be intimidated by the menu; there may be a lot in it, but it's honestly very easy to master.
On the other hand, if you are a Sony user, it should be a breeze as it uses Sony's new color-coded main menu, albeit with just a bit of difference in the order the settings are in.
Besides the Main Menu, the Sony a7 III also has a Function Menu, quickly accessed using the Fn button above the wheel, and the My Menu, which is the sixth tab in the Main Menu. Both are customizable, the Function Menu containing 12 slots you can use for 12 of your most used items/features.
As for the display, the a7 III has a 2359K-dot XGA OLED Tru-Finder EVF, which offers excellent image reproduction and great visibility, and a 922K-dot LCD touchscreen that tilts up to 107 degrees up and 41 degrees down so you can push past your normal reachable angles and get new perspectives.
Unfortunately, the touchscreen function is limited to setting focus. But while it might be helpful to get more use out of it--menu operation, for example--it isn't really necessary in our opinion. Call us old-fashioned, but we're so used to using the navigation wheel and buttons, we'd probably forget using the touchpad to control the menu even if it was available.
SPEED & AF PERFORMANCE
For what Sony calls its 'basic' model, the Sony a7 III is surprisingly stocked with excellent features. Its speed, to start, is impressive. Its Exmor R CMOS sensor and BIONZ X image processor combo allows fast data readout and processing speeds, and a continuous burst mode of 10fps or up to 40 uncompressed RAW shots (to compare, the Sony a7r III captures 10fps or up to 28 uncompressed RAW).
We have noticed that it experiences shorter lags than the a7R III, especially when shooting in continuous. It's perhaps because it processes smaller files, but it also means shorter wait times on your end. Though it is worth noting that you also need to pair it with faster memory cards; otherwise, that high speed is not going to matter much.
Since we're on the topic, the a7 III is also outfitted with remarkably fast autofocusing, thanks to its 693-point phase-detection AF that is combined with the high-precision contrast-detection AF, a system that Sony's dubbed its Fast Hybrid AF. Indeed, it's hard to miss a crisp and perfectly focused shot with this camera. It's one of the many things we loved about the a7R III, and we're happy to see a better version of it in this cheaper body.
Thanks to this system, the autofocus is also highly accurate, very reliable in low light conditions (down to EV-3), when shooting motion and when honing on a specific spot in the frame. While we didn't get a lot of chances to test it in very low light situations, we did witness firsthand how precise and fast it focuses in low light. It's definitely one of a7 III's top five features.
Sony pairs it with an Eye AF with unbelievable tracking--we've had one of our subjects do spins in front of the camera, and this Eye AF caught her eye before she made a complete turn. In other instances, it caught our subjects' eyes even when their faces are slightly turned away.
Not that there weren't missed shots. When we had our subjects briskly walk or run towards the camera, there were a couple of unfocused shots, especially in low light, and we had to reshoot. The camera eventually got it right though, and it definitely performs much better with better lighting.
We're less impressed with the a7 III's metering. We honestly think that the a7R III does a much better job. We've found it to slightly overexpose in situations when there's considerable shadow in the frame, resulting in some exaggerated highlights even though there wasn't much to begin with. But that difference is probably not worth paying $1k more; simply underexpose the shot.
Metering modes available are multi-segment, center-weighted, spot, spot standard/large, entire screen average, and highlight. For portraits, we found that when using Face Priority, the multi-segment works best.
STILL IMAGE QUALITY
First, let's talk about the resolution wherein lies the major difference between the a7 III and its almost clone source, the a7R III. While both bodies use the brand's 35 mm full-frame Exmor R CMOS image sensor, the a7 III only has 24.2 megapixels to the a7r III's whopping 42.4 megapixels.
Let's be fair here: 24.2 megapixels is high enough for most people and it's definitely good enough to yield gorgeous details in an image. But if you compare a 24MP image to a 42MP one, you will notice a huge difference. A 42MP image will have more details and a much cleaner look.
Does that really matter? If you're a pro, then absolutely; otherwise, it's up to you to decide since that's $1k more of your hard-earned dough. Also consider that a 42MP RAW file is nearly double the storage size of a 24MP one, which means that opting for an a7R III is also a commitment in storage.
That said, there's no doubt that the a7 III produces beautiful, very sharp images with great dynamic range, a fairly accurate color rendering and excellent noise control. We've noticed that skin tones with this camera tend to be on the yellow/orangey side, and we have found ourselves often making adjustments to correct that. And while the dynamic range is great, there's still something left to be desired. But as far as noise control, it performs beautifully. In fact, many are touting it has having the best on the market.
Like with Sony's other mirrorless cameras, producing incredible images with the a7 III seems effortless, especially with the right lenses. In fact, unless they're particularly bad, any beginner with the basic knowledge of photography can.
The Sony a7 III's sensitivity range is impressive at ISO 100 to 51,200 (50 to 204,000 expandable). It's more impressive, in fact, than the a7R III.
Plus, as we mentioned earlier, it does a great job controlling the noise, especially chromatic noise. It's managed to keep chroma down even at ISO 160,000, which is very impressive. In fact, shots are still surprisingly clean at 25,600, which is pretty high; and though grain starts manifesting at 12,800, you can get images you can work with all the way to 64,000. Just a couple of tweaks in post, and you're all set.
Several file format options for video and movie capture are on hand for Sony a7 III users: 4K at 30p and 24p, and HD at 120p, 60p, 30p and 24p, which means it's excellent for enthusiasts.
What's more, it is able to cram about 2.4 times the minimum data for 4K videos and offers the Hybrid Log-Gamma picture mode, making it good enough for pros as well. We recorded similar clips in HLG and in regular modes, and though the differences are subtle, the HLG one doesn't have overblown highlights and also offers more details.
Another thing that's impressive about the a7 III is that it's got excellent IBIS, thanks to 5-axis stabilization, which according to Sony boasts gypo sensors and an algorithm that compensates for 5 types of camera shakes. Shooting the same scene and putting them together side by side, the difference is more than obvious.
Because it's got such excellent AF, it's able to keep up with movements in videos, switching and adjusting the focus smoothly. There were a couple of moments when the focus didn't transition fast enough, but most of the time, the transitions were on point and seamless.
The Sony a7 III's wireless performance is pretty solid, if limited, much like the a7R III. There's not much difference between the two. The a7 III also uses the same PlayMemories Mobile app, which is straightforward and easy to use, and allows JPEG files transfers, remote controlling, and location tagging, among others. The app is pretty basic, but it is useful in several instances, especially when you're using the remote control.
PROS & CONS
Fast and accurate AF
Unbelievable Eye AF tracking
Excellent noise control
Long battery life
Very wide sensitivity range
4k video capabilities
Hybrid Log-Gamma mode available
Impressive image stabilization
Affordable price tag
Color rendering on skin tone on the yellow end
24.2 megapixels might leave something to be desired
The Sony a7 III is an excellent mirrorless camera. A full-frame sensor trimmed with the works -- a super fast, precise autofocus and Eye AF, long battery life, a wider ISO range and impressive noise reduction, 4K capabilities and IBIS, to name a few -- that won't cost you an arm and a leg is the dream, and that's basically this.
If you're already a Sony shooter with an a7R III or an a9, this camera might feel underwhelming. That's because, even though it has many of the makings of a pro-level body, it doesn't go all the way. Hey, in that price range, compromises have to be made, right?
But that's exactly the point of this camera. You could be a mom looking to explore the world of photography, a blogger who needs high-res videos, a photography student looking to upgrade to a full-frame, or an experienced photojournalist who needs a more compact body to use in your travels. Whether you're a portraits photographer, a landscape lover, or an Instagram influencer, the Sony a7 III might just be your ideal camera.
It's for photographers who don't really need all the power and/or resolution of Sony's pricier models, but want a camera of affordable price and high caliber with which to practice the craft and from which they could learn to appreciate the beauty of pro-level features.
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