Nikon Z8 vs Sony A7S III

The Nikon Z8 and the Sony Alpha 7S III are two digital cameras that were revealed to the public, respectively, in May 2023 and July 2020. Both the Z8 and the A7S III are mirrorless interchangeable lens cameras that are equipped with a full frame sensor. The Nikon has a resolution of 45.4 megapixels, whereas the Sony provides 12 MP.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications

Nikon Z8		Sony A7S III
Mirrorless system camera		Mirrorless system camera
Nikon Z mount lenses		Sony E mount lenses
45.4 MP – Full Frame sensor		12 MP – Full Frame sensor
8K/30p Video		4K/120p Video
ISO 64-25,600 (32 - 102,400)		ISO 80-102,400 (40 - 409,600)
Electronic viewfinder (3690k dots)		Electronic viewfinder (9440k dots)
3.2" LCD – 2089k dots		3.0" LCD – 1440k dots
Fully flexible touchscreen		Swivel touchscreen
30 shutter flaps per second		10 shutter flaps per second
In-body stabilization		In-body stabilization
Weathersealed body		Weathersealed body
340 shots per battery charge		600 shots per battery charge
144 x 119 x 83 mm, 910 g		127 x 97 x 81 mm, 699 g

Check Z8 price at
amazon.com
Check A7S III price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon Z8 and the Sony Alpha 7S III? Which one should you buy? Read on to find out how these two cameras compare with respect to their body size, their imaging sensors, their shooting features, their input-output connections, and their reception by expert reviewers.

Body comparison

An illustration of the physical size and weight of the Nikon Z8 and the Sony A7S III is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7S III is notably smaller (28 percent) than the Nikon Z8. Moreover, the A7S III is markedly lighter (23 percent) than the Z8. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the Z8 gets 340 shots out of its Nikon EN-EL15c battery, while the A7S III can take 600 images on a single charge of its Sony NP-FZ100 power pack. The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price (USD)	Street Price
1.		Nikon Z8	144 mm	119 mm	83 mm	910 g	340	Y	May 2023	3,999	amazon.com
2.		Sony A7S III	127 mm	97 mm	81 mm	699 g	600	Y	Jul 2020	3,499	amazon.com
3.		Canon R5	138 mm	98 mm	88 mm	738 g	320	Y	Jul 2020	3,899	amazon.com
4.		Canon R5 C	142 mm	101 mm	111 mm	770 g	320	Y	Jan 2022	4,499	amazon.com
5.		Nikon D850	146 mm	124 mm	79 mm	1005 g	1840	Y	Jul 2017	3,299	amazon.com
6.		Nikon Z6	134 mm	101 mm	67 mm	675 g	310	Y	Aug 2018	1,999	ebay.com
7.		Nikon Z6 II	134 mm	101 mm	70 mm	705 g	410	Y	Oct 2020	1,999	amazon.com
8.		Nikon Z7	134 mm	101 mm	67 mm	675 g	330	Y	Aug 2018	3,399	ebay.com
9.		Nikon Z7 II	134 mm	101 mm	70 mm	705 g	420	Y	Oct 2020	2,999	amazon.com
10.		Nikon Z9	149 mm	150 mm	91 mm	1340 g	740	Y	Oct 2021	5,499	amazon.com
11.		Panasonic S1R	149 mm	110 mm	97 mm	1016 g	380	Y	Feb 2019	3,699	amazon.com
12.		Sony A7R III	127 mm	96 mm	74 mm	650 g	650	Y	Oct 2017	3,199	ebay.com
13.		Sony A7R IV	129 mm	96 mm	78 mm	665 g	670	Y	Jul 2019	3,499	ebay.com
14.		Sony A7R IVA	129 mm	96 mm	78 mm	665 g	670	Y	Apr 2021	3,499	amazon.com
15.		Sony A7R V	131 mm	97 mm	82 mm	723 g	530	Y	Oct 2022	3,899	amazon.com
16.		Sony A7S II	127 mm	96 mm	60 mm	627 g	370	Y	Sep 2015	2,999	ebay.com
17.		Sony A9 II	129 mm	96 mm	76 mm	678 g	690	Y	Oct 2019	4,499	amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
Convert to Imperial

The price is, of course, an important factor in any camera decision. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The A7S III was launched at a somewhat lower price (by 13 percent) than the Z8, which makes it more attractive for photographers on a tight budget. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the A7S III is 1 percent smaller. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

With 45.4MP, the Z8 offers a higher resolution than the A7S III (12MP), but the Z8 has smaller individual pixels (pixel pitch of 4.35μm versus 8.40μm for the A7S III). However, the Z8 is a much more recent model (by 2 years and 9 months) than the A7S III, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the Z8 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Nikon Z8 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the Z8 for good quality output (200 dots per inch) amounts to 41.3 x 27.5 inches or 104.9 x 69.9 cm, for very good quality (250 dpi) 33 x 22 inches or 83.9 x 55.9 cm, and for excellent quality (300 dpi) 27.5 x 18.3 inches or 69.9 x 46.6 cm. The corresponding values for the Sony A7S III are 21.2 x 14.2 inches or 53.8 x 36 cm for good quality, 17 x 11.3 inches or 43.1 x 28.8 cm for very good quality, and 14.1 x 9.4 inches or 35.9 x 24 cm for excellent quality prints.

The Nikon Z8 has a native sensitivity range from ISO 64 to ISO 25600, which can be extended to ISO 32-102400. The corresponding ISO settings for the Sony Alpha 7S III are ISO 80 to ISO 102400, with the possibility to increase the ISO range to 40-409600.

In terms of underlying technology, the Z8 is build around a Stacked BSI-CMOS sensor, while the A7S III uses a BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under review, the Z8 provides substantially higher image quality than the A7S III, with an overall score that is 12 points higher. This advantage is based on 2.6 bits higher color depth, 0.3 EV in additional dynamic range, and 0 stops in additional low light sensitivity. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Nikon Z8	Full Frame	45.4	8256	5504	8K/30p	26.3	14.2	2548	98
2.		Sony A7S III	Full Frame	12.0	4240	2832	4K/120p	23.7	13.9	2520	86
3.		Canon R5	Full Frame	44.8	8192	5464	8K/30p	25.3	14.6	3042	95
4.		Canon R5 C	Full Frame	44.8	8192	5464	8k/60p	25.4	14.5	3082	96
5.		Nikon D850	Full Frame	45.4	8256	5504	4K/30p	26.4	14.8	2660	100
6.		Nikon Z6	Full Frame	24.3	6048	4024	4K/30p	25.3	14.3	3299	95
7.		Nikon Z6 II	Full Frame	24.3	6048	4024	4K/60p	25.0	14.4	3303	94
8.		Nikon Z7	Full Frame	45.4	8256	5504	4K/30p	26.3	14.6	2668	99
9.		Nikon Z7 II	Full Frame	45.4	8256	5504	4K/60p	26.3	14.7	2841	100
10.		Nikon Z9	Full Frame	45.4	8256	5504	8K/30p	26.3	14.4	2451	98
11.		Panasonic S1R	Full Frame	46.7	8368	5584	4K/60p	26.4	14.1	3525	100
12.		Sony A7R III	Full Frame	42.2	7952	5304	4K/30p	26.0	14.7	3523	100
13.		Sony A7R IV	Full Frame	60.2	9504	6336	4K/30p	26.0	14.8	3344	99
14.		Sony A7R IVA	Full Frame	60.2	9504	6336	4K/30p	26.0	14.8	3344	99
15.		Sony A7R V	Full Frame	60.2	9504	6336	8k/24p	26.5	14.8	3187	100
16.		Sony A7S II	Full Frame	12.0	4240	2832	4K/30p	23.6	13.3	2993	85
17.		Sony A9 II	Full Frame	24.0	6000	4000	4K/30p	25.0	14.0	3434	93
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the Z8 provides a higher video resolution than the A7S III. It can shoot video footage at 8K/30p, while the Sony is limited to 4K/120p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The two cameras under review are similar with respect to both having an electronic viewfinder. However, the one in the A7S III offers a substantially higher resolution than the one in the Z8 (9440k vs 3690k dots). The table below summarizes some of the other core capabilities of the Nikon Z8 and Sony A7S III in connection with corresponding information for a sample of similar cameras.

Core Features

		Camera Model	Viewfinder (Type or 000 dots)	Control Panel (yes/no)	LCD Specifications (inch/000 dots)	LCD Attach- ment	Touch Screen (yes/no)	Max Shutter Speed *	Max Shutter Flaps *	Built-in Flash (yes/no)	Built-in Image Stab
1.		Nikon Z8	3690	Y	3.2 / 2089	full-flex	Y	1/32000s	30.0/s	n	Y
2.		Sony A7S III	9440	n	3.0 / 1440	swivel	Y	1/8000s	10.0/s	n	Y
3.		Canon R5	5760	Y	3.2 / 2100	swivel	Y	1/8000s	12.0/s	n	Y
4.		Canon R5 C	5760	Y	3.2 / 2100	swivel	Y	1/8000s	12.0/s	n	n
5.		Nikon D850	optical	Y	3.2 / 2359	tilting	Y	1/8000s	9.0/s	n	n
6.		Nikon Z6	3690	Y	3.2 / 2100	tilting	Y	1/8000s	12.0/s	n	Y
7.		Nikon Z6 II	3690	Y	3.2 / 2100	tilting	Y	1/8000s	14.0/s	n	Y
8.		Nikon Z7	3690	Y	3.2 / 2100	tilting	Y	1/8000s	9.0/s	n	Y
9.		Nikon Z7 II	3690	Y	3.2 / 2100	tilting	Y	1/8000s	10.0/s	n	Y
10.		Nikon Z9	3690	Y	3.2 / 2089	full-flex	Y	1/32000s	30.0/s	n	Y
11.		Panasonic S1R	5760	Y	3.2 / 2100	full-flex	Y	1/8000s	9.0/s	n	Y
12.		Sony A7R III	3686	n	3.0 / 1440	tilting	Y	1/8000s	10.0/s	n	Y
13.		Sony A7R IV	5760	n	3.0 / 1440	tilting	Y	1/8000s	10.0/s	n	Y
14.		Sony A7R IVA	5760	n	3.0 / 2340	tilting	Y	1/8000s	10.0/s	n	Y
15.		Sony A7R V	9440	n	3.2 / 2100	full-flex	Y	1/8000s	10.0/s	n	Y
16.		Sony A7S II	2400	n	3.0 / 1229	tilting	n	1/8000s	5.0/s	n	Y
17.		Sony A9 II	3686	n	3.0 / 1440	tilting	Y	1/8000s	20.0/s	n	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the Z8, but is missing on the A7S III is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, both cameras under consideration feature an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).

The Nikon Z8 has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.

The Z8 writes its imaging data to CFexpress (type B) or SDXC cards, while the A7S III uses CFexpress (type A) or SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. Moreover, both cameras support UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s).

Connectivity comparison

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Nikon Z8 and Sony Alpha 7S III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections

		Camera Model	Hotshoe Port	Internal Mic / Speaker	Microphone Port	Headphone Port	HDMI Port	USB Port	WiFi Support	NFC Support	Bluetooth Support
1.		Nikon Z8	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
2.		Sony A7S III	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
3.		Canon R5	Y	mono / mono	Y	Y	micro	3.2	Y	-	Y
4.		Canon R5 C	Y	stereo / mono	Y	Y	micro	3.2	Y	-	Y
5.		Nikon D850	Y	stereo / mono	Y	Y	mini	3.0	Y	Y	Y
6.		Nikon Z6	Y	stereo / mono	Y	Y	micro	3.1	Y	-	Y
7.		Nikon Z6 II	Y	stereo / mono	Y	Y	micro	3.2	Y	-	Y
8.		Nikon Z7	Y	stereo / mono	Y	Y	micro	3.1	Y	-	Y
9.		Nikon Z7 II	Y	stereo / mono	Y	Y	micro	3.2	Y	-	Y
10.		Nikon Z9	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
11.		Panasonic S1R	Y	stereo / mono	Y	Y	full	3.1	Y	-	Y
12.		Sony A7R III	Y	stereo / mono	Y	Y	micro	3.1	Y	Y	Y
13.		Sony A7R IV	Y	stereo / mono	Y	Y	micro	3.1	Y	Y	Y
14.		Sony A7R IVA	Y	stereo / mono	Y	Y	micro	3.2	Y	Y	Y
15.		Sony A7R V	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
16.		Sony A7S II	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
17.		Sony A9 II	Y	stereo / mono	Y	Y	micro	3.1	Y	Y	Y

Studio photographers will appreciate that the Nikon Z8 (unlike the A7S III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the Z8 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the Z8 and the A7S III are recent models that are part of the current product line-up. The A7S III replaced the earlier Sony A7S II, while the Z8 does not have a direct predecessor. Further information on the features and operation of the Z8 and A7S III can be found, respectively, in the Nikon Z8 Manual (free pdf) or the online Sony A7S III Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Nikon Z8 or the Sony A7S III – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Advantages of the Nikon Z8:

• More detail: Offers more megapixels (45.4 vs 12MP) with a 95% higher linear resolution.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Better image quality: Scores substantially higher (12 points) in the DXO overall assessment.
• Richer colors: Generates images with noticeably better colors (2.6 bits more color depth).
• Better video: Provides higher definition movie capture (8K/30p vs 4K/120p).
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (2089k vs 1440k dots).
• Faster shutter: Has higher mechanical shutter speed (1/32000s vs 1/8000s) to freeze action.
• Faster burst: Shoots at higher frequency (30 vs 10 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• Easier geotagging: Features an internal GPS sensor to log localization data.
• Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
• More modern: Reflects 2 years and 9 months of technical progress since the A7S III launch.

Reasons to prefer the Sony Alpha 7S III:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• More detailed viewfinder: Has higher resolution electronic viewfinder (9440k vs 3690k dots).
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.91x vs 0.80x).
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• More compact: Is smaller (127x97mm vs 144x119mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 211g or 23 percent) and is thus easier to take along.
• Longer lasting: Gets more shots (600 versus 340) out of a single battery charge.
• More affordable: Was released into a lower priced segment (13 percent cheaper at launch).
• More heavily discounted: Has been around for much longer (launched in July 2020).

If the number of relative strengths (bullet points above) is taken as a guide, the Z8 is the clear winner of the match-up (14 : 9 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision on a new camera. A professional wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro shooter. Hence, the decision which camera is best and worth buying is often a very personal one.

How about other alternatives? Do the specifications of the Nikon Z8 and the Sony A7S III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the Z8 and the A7S III in practical situations. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], dpreview [DPR], ephotozine [EPZ], photographyblog [PB]). As can be seen, the professional reviewers agree in many cases on the quality of different cameras, but sometimes their assessments diverge, reinforcing the earlier point that a camera decision is often a very personal choice.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price (USD)	Street Price
1.		Nikon Z8	5/5	..	5/5	94/100	5/5	4.5/5	May 2023	3,999	amazon.com
2.		Sony A7S III	4.5/5	+ +	5/5	91/100	4.5/5	5/5	Jul 2020	3,499	amazon.com
3.		Canon R5	4.5/5	+	4/5	91/100	4.5/5	4.5/5	Jul 2020	3,899	amazon.com
4.		Canon R5 C	..	+ +	..	..	..	..	Jan 2022	4,499	amazon.com
5.		Nikon D850	4.5/5	+ +	5/5	89/100	4.5/5	5/5	Jul 2017	3,299	amazon.com
6.		Nikon Z6	5/5	..	5/5	89/100	4.5/5	5/5	Aug 2018	1,999	ebay.com
7.		Nikon Z6 II	4.5/5	..	4/5	89/100	4.5/5	4.5/5	Oct 2020	1,999	amazon.com
8.		Nikon Z7	5/5	+	4.8/5	89/100	4.5/5	5/5	Aug 2018	3,399	ebay.com
9.		Nikon Z7 II	4.5/5	..	4.5/5	..	4.5/5	4.5/5	Oct 2020	2,999	amazon.com
10.		Nikon Z9	5/5	..	4.5/5	94/100	5/5	5/5	Oct 2021	5,499	amazon.com
11.		Panasonic S1R	4.5/5	..	4.6/5	89/100	4.5/5	4.5/5	Feb 2019	3,699	amazon.com
12.		Sony A7R III	..	+ +	4/5	90/100	4.5/5	5/5	Oct 2017	3,199	ebay.com
13.		Sony A7R IV	5/5	+	4.5/5	91/100	4.5/5	5/5	Jul 2019	3,499	ebay.com
14.		Sony A7R IVA	5/5	+	4.5/5	91/100	4.5/5	5/5	Apr 2021	3,499	amazon.com
15.		Sony A7R V	5/5	+ +	4.5/5	92/100	..	..	Oct 2022	3,899	amazon.com
16.		Sony A7S II	5/5	+	..	..	4.5/5	5/5	Sep 2015	2,999	ebay.com
17.		Sony A9 II	..	..	5/5	90/100	5/5	5/5	Oct 2019	4,499	amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Check Z8 price at
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Check A7S III price at
amazon.com

Other camera comparisons

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