Nikon Z50 II vs Sony A9 III

The Nikon Z50 II and the Sony Alpha A9 III are two digital cameras that were officially introduced, respectively, in November 2024 and November 2023. Both the Z50 II and the A9 III are mirrorless interchangeable lens cameras that are based on an APS-C (Z50 II) and a full frame (A9 III) sensor. The Nikon has a resolution of 20.7 megapixels, whereas the Sony provides 24 MP.

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

Headline Specifications

Nikon Z50 II		Sony A9 III
Mirrorless system camera		Mirrorless system camera
Nikon Z mount lenses		Sony E mount lenses
20.7 MP – APS-C sensor		24 MP – Full Frame sensor
4K/60p Video		4K/120p Video
ISO 100-51,200 (100 - 204,800)		ISO 250-25,600 (125 - 51,200)
Electronic viewfinder (2360k dots)		Electronic viewfinder (9440k dots)
3.2" LCD – 1040k dots		3.2" LCD – 2100k dots
Swivel touchscreen		Fully flexible touchscreen
11 shutter flaps per second		120 shutter flaps per second
Lens stabilization only		In-body stabilization
Weathersealed body		Weathersealed body
250 shots per battery charge		530 shots per battery charge
127 x 97 x 67 mm, 550 g		136 x 97 x 83 mm, 702 g

Check Z50 II price at
amazon.com
Check A9 III price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon Z50 II and the Sony Alpha A9 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 Z50 II and the Sony A9 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 A9 III is notably larger (7 percent) than the Nikon Z50 II. Moreover, the A9 III is markedly heavier (28 percent) than the Z50 II. 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.

The battery packs of both cameras can be charged via USB, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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	Street Price
1.		Nikon Z50 II	127 mm	97 mm	67 mm	550 g	250	Y	Nov 2024	US$ 909	amazon.com
2.		Sony A9 III	136 mm	97 mm	83 mm	702 g	530	Y	Nov 2023	US$ 5 999	amazon.com
3.		Canon R8	133 mm	86 mm	70 mm	461 g	220	n	Feb 2023	US$ 1 499	amazon.com
4.		Nikon D5200	129 mm	98 mm	78 mm	555 g	500	n	Nov 2012	US$ 749	ebay.com
5.		Nikon D5300	125 mm	98 mm	76 mm	480 g	600	n	Oct 2013	US$ 799	ebay.com
6.		Nikon D5500	124 mm	97 mm	70 mm	470 g	820	n	Jan 2015	US$ 899	ebay.com
7.		Nikon Z6 III	139 mm	102 mm	74 mm	670 g	380	Y	Jun 2024	US$ 2 499	amazon.com
8.		Nikon Z30	128 mm	74 mm	60 mm	405 g	330	Y	Jun 2022	US$ 709	amazon.com
9.		Nikon Z50	127 mm	94 mm	60 mm	450 g	320	Y	Oct 2019	US$ 859	amazon.com
10.		Nikon Zf	144 mm	103 mm	49 mm	710 g	380	Y	Sep 2023	US$ 1 999	amazon.com
11.		Nikon Z fc	135 mm	94 mm	44 mm	445 g	300	n	Jun 2021	US$ 959	amazon.com
12.		Sony A1 II	136 mm	97 mm	83 mm	743 g	520	Y	Nov 2024	US$ 6 499	amazon.com
13.		Sony A7 II	127 mm	96 mm	60 mm	599 g	350	Y	Nov 2014	US$ 1 999	ebay.com
14.		Sony A7 III	127 mm	96 mm	74 mm	650 g	610	Y	Feb 2018	US$ 1 999	amazon.com
15.		Sony A9	127 mm	96 mm	63 mm	673 g	650	Y	Apr 2017	US$ 4 499	ebay.com
16.		Sony A9 II	129 mm	96 mm	76 mm	678 g	690	Y	Oct 2019	US$ 4 499	amazon.com
17.		Sony ZV-1 II	106 mm	60 mm	47 mm	292 g	290	n	May 2023	US$ 899	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 Z50 II was launched at a markedly lower price (by 85 percent) than the A9 III, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Nikon Z50 II features an APS-C sensor and the Sony A9 III a full frame sensor. The sensor area in the A9 III is 130 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

With 24MP, the A9 III offers a higher resolution than the Z50 II (20.7MP), but the A9 III nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 4.22μm for the Z50 II) due to its larger sensor. However, the Z50 II is a somewhat more recent model (by 1 year) than the A9 III, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the Z50 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A9 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A9 III for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Nikon Z50 II are 27.8 x 18.6 inches or 70.7 x 47.1 cm for good quality, 22.3 x 14.8 inches or 56.6 x 37.7 cm for very good quality, and 18.6 x 12.4 inches or 47.1 x 31.4 cm for excellent quality prints.

The Nikon Z50 II has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 100-204800. The corresponding ISO settings for the Sony Alpha A9 III are ISO 250 to ISO 25600, with the possibility to increase the ISO range to 125-51200.

In terms of underlying technology, the Z50 II is build around a CMOS sensor, while the A9 III uses a Stacked 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 assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Nikon Z50 II	APS-C	20.7	5568	3712	4K/60p	24.3	14.1	2467	86
2.		Sony A9 III	Full Frame	24.0	6000	4000	4K/120p	25.4	14.7	3243	96
3.		Canon R8	Full Frame	24.0	6000	4000	4k/60p	24.5	14.7	3295	93
4.		Nikon D5200	APS-C	24.0	6000	4000	1080/60i	24.2	13.9	1284	84
5.		Nikon D5300	APS-C	24.0	6000	4000	1080/60p	24.0	13.9	1338	83
6.		Nikon D5500	APS-C	24.0	6000	4000	1080/60p	24.1	14.0	1438	84
7.		Nikon Z6 III	Full Frame	24.3	6048	4024	6K/60p	25.4	14.8	3318	97
8.		Nikon Z30	APS-C	20.7	5568	3712	4K/30p	24.3	13.9	2230	86
9.		Nikon Z50	APS-C	20.7	5568	3712	4K/30p	24.1	13.6	1963	84
10.		Nikon Zf	Full Frame	24.3	6048	4024	4K/60p	25.4	14.7	3243	96
11.		Nikon Z fc	APS-C	20.7	5568	3712	4K/30p	24.2	13.8	2131	85
12.		Sony A1 II	Full Frame	49.8	8640	5760	8k/30p	25.4	14.8	3363	97
13.		Sony A7 II	Full Frame	24.0	6000	4000	1080/60p	24.9	13.6	2449	90
14.		Sony A7 III	Full Frame	24.0	6000	4000	4K/30p	25.0	14.7	3730	96
15.		Sony A9	Full Frame	24.0	6000	4000	4K/30p	24.9	13.3	3517	92
16.		Sony A9 II	Full Frame	24.0	6000	4000	4K/30p	25.0	14.0	3434	93
17.		Sony ZV-1 II	1-inch	20.0	5472	3648	4K/30p	22.3	12.9	965	67
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. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A9 III provides a faster frame rate than the Z50 II. It can shoot movie footage at 4K/120p, while the Nikon is limited to 4K/60p.

Feature comparison

Beyond 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 A9 III offers a substantially higher resolution than the one in the Z50 II (9440k vs 2360k dots). The following table reports on some other key feature differences and similarities of the Nikon Z50 II, the Sony A9 III, and comparable 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 Z50 II	2360	n	3.2 / 1040	swivel	Y	1/4000s	11.0/s	Y	n
2.		Sony A9 III	9440	n	3.2 / 2100	full-flex	Y	1/80000s	120.0/s	n	Y
3.		Canon R8	2360	n	3.0 / 1620	swivel	Y	1/4000s	6.0/s	n	n
4.		Nikon D5200	optical	n	3.0 / 921	swivel	n	1/4000s	5.0/s	Y	n
5.		Nikon D5300	optical	n	3.2 / 1037	swivel	n	1/4000s	5.0/s	Y	n
6.		Nikon D5500	optical	n	3.2 / 1037	swivel	Y	1/4000s	5.0/s	Y	n
7.		Nikon Z6 III	5760	Y	3.2 / 2100	swivel	Y	1/8000s	14.0/s	n	Y
8.		Nikon Z30	none	n	3.0 / 1040	swivel	Y	1/4000s	11.0/s	Y	n
9.		Nikon Z50	2360	n	3.2 / 1040	tilting	Y	1/4000s	11.0/s	Y	n
10.		Nikon Zf	3690	n	3.2 / 2100	swivel	Y	1/8000s	14.0/s	n	Y
11.		Nikon Z fc	2360	Y	3.0 / 1040	swivel	Y	1/4000s	11.0/s	n	n
12.		Sony A1 II	9437	n	3.2 / 2100	full-flex	Y	1/8000s	30.0/s	n	Y
13.		Sony A7 II	2400	n	3.0 / 1230	tilting	n	1/8000s	5.0/s	n	Y
14.		Sony A7 III	2359	n	3.0 / 922	tilting	Y	1/8000s	10.0/s	n	Y
15.		Sony A9	3686	n	3.0 / 1440	tilting	Y	1/8000s	20.0/s	n	Y
16.		Sony A9 II	3686	n	3.0 / 1440	tilting	Y	1/8000s	20.0/s	n	Y
17.		Sony ZV-1 II	none	n	3.0 / 922	swivel	Y	1/2000s	24.0/s	n	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The Z50 II has one, while the A9 III does not. While the built-in flash of the Z50 II is not very powerful, it can at times be useful as a fill-in light.

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 Z50 II and the Sony A9 III both have 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 Z50 II writes its imaging data to SDXC cards, while the A9 III uses CFexpress (type A) or SDXC cards. The A9 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the Z50 II only has one slot. Both cameras support UHS-II cards, which provide for 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 Z50 II and Sony Alpha A9 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 Z50 II	Y	stereo / mono	Y	Y	micro	3.0	Y	-	Y
2.		Sony A9 III	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
3.		Canon R8	Y	stereo / mono	Y	Y	micro	3.2	Y	-	Y
4.		Nikon D5200	Y	stereo / mono	Y	-	mini	2.0	-	-	-
5.		Nikon D5300	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
6.		Nikon D5500	Y	stereo / mono	Y	-	mini	2.0	Y	-	-
7.		Nikon Z6 III	Y	stereo / mono	Y	Y	micro	3.2	Y	-	Y
8.		Nikon Z30	Y	stereo / mono	Y	-	micro	3.2	Y	-	Y
9.		Nikon Z50	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
10.		Nikon Zf	Y	stereo / mono	Y	Y	micro	3.2	Y	-	Y
11.		Nikon Z fc	Y	stereo / mono	Y	-	micro	3.2	Y	-	Y
12.		Sony A1 II	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
13.		Sony A7 II	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
14.		Sony A7 III	Y	stereo / mono	Y	Y	micro	3.1	Y	Y	Y
15.		Sony A9	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	Y
16.		Sony A9 II	Y	stereo / mono	Y	Y	micro	3.1	Y	Y	Y
17.		Sony ZV-1 II	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y

Studio photographers will appreciate that the Sony A9 III (unlike the Z50 II) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the Z50 II and the A9 III are recent models that are part of the current product line-up. The A9 III replaced the earlier Sony A9 II, while the Z50 II followed on from the Nikon Z50. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Sony websites.

Review summary

So what is the bottom line? Is the Nikon Z50 II better than the Sony A9 III or vice versa? A synthesis of the relative strong points of each of the models is listed below.

Arguments in favor of the Nikon Z50 II:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• Less heavy: Is lighter (by 152g or 22 percent) and hence easier to carry around.
• Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
• More affordable: Was introduced into a lower priced category (85 percent cheaper at launch).
• More modern: Is somewhat more recent (announced 1 year after the A9 III).

Advantages of the Sony Alpha A9 III:

• More detail: Has more megapixels (24 vs 20.7MP), which boosts linear resolution by 8%.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
• Richer colors: The pixel size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
• Better video: Provides higher movie framerates (4K/120p versus 4K/60p).
• More detailed viewfinder: Has higher resolution electronic viewfinder (9440k vs 2360k dots).
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.9x vs 0.68x).
• More detailed LCD: Has a higher resolution rear screen (2100k vs 1040k dots).
• Faster shutter: Has higher mechanical shutter speed (1/80000s vs 1/4000s) to freeze action.
• Faster burst: Shoots at higher frequency (120 vs 11 flaps/sec) to capture the decisive moment.
• Longer lasting: Gets more shots (530 versus 250) out of a single battery charge.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• More solid recording: Has a full-sized HDMI port for a sturdy connection to an external recorder.
• Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
• Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
• More heavily discounted: Has been on the market for longer (launched in November 2023).

If the count of individual advantages (bullet points above) is taken as a guide, the A9 III is the clear winner of the contest (18 : 5 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision. A professional wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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 Z50 II and the Sony A9 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 remains incomplete and does no justice, for example, to the way the Z50 II or the A9 III perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why hands-on reviews by experts are important. The following table reports the overall ratings of the cameras as published by some of the major 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	Street Price
1.		Nikon Z50 II	..	..	..	88/100	..	..	Nov 2024	US$ 909	amazon.com
2.		Sony A9 III	4.5/5	..	..	91/100	..	..	Nov 2023	US$ 5 999	amazon.com
3.		Canon R8	4.5/5	+ +	4.5/5	87/100	4/5	4.5/5	Feb 2023	US$ 1 499	amazon.com
4.		Nikon D5200	4/5	+ +	..	79/100	4.5/5	4.5/5	Nov 2012	US$ 749	ebay.com
5.		Nikon D5300	4/5	+ +	..	79/100	4.5/5	4.5/5	Oct 2013	US$ 799	ebay.com
6.		Nikon D5500	5/5	+	..	79/100	4.5/5	4.5/5	Jan 2015	US$ 899	ebay.com
7.		Nikon Z6 III	..	..	..	..	..	..	Jun 2024	US$ 2 499	amazon.com
8.		Nikon Z30	4/5	..	4/5	86/100	4.5/5	4/5	Jun 2022	US$ 709	amazon.com
9.		Nikon Z50	5/5	..	5/5	85/100	4.5/5	4.5/5	Oct 2019	US$ 859	amazon.com
10.		Nikon Zf	4.5/5	..	4.5/5	90/100	4.5/5	5/5	Sep 2023	US$ 1 999	amazon.com
11.		Nikon Z fc	4/5	..	4.5/5	86/100	5/5	4.5/5	Jun 2021	US$ 959	amazon.com
12.		Sony A1 II	..	..	..	..	..	..	Nov 2024	US$ 6 499	amazon.com
13.		Sony A7 II	5/5	+	4/5	82/100	4.5/5	5/5	Nov 2014	US$ 1 999	ebay.com
14.		Sony A7 III	..	+ +	4.5/5	89/100	5/5	5/5	Feb 2018	US$ 1 999	amazon.com
15.		Sony A9	5/5	+ +	4.8/5	89/100	5/5	5/5	Apr 2017	US$ 4 499	ebay.com
16.		Sony A9 II	..	..	5/5	90/100	5/5	5/5	Oct 2019	US$ 4 499	amazon.com
17.		Sony ZV-1 II	4.5/5	..	3.5/5	83/100	3.5/5	4.5/5	May 2023	US$ 899	amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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 Z50 II price at
amazon.com
Check A9 III price at
amazon.com

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

~

Check Z50 II price at
amazon.com
Check A9 III price at
amazon.com

Did you notice an error on this page? If so, please get in touch, so that we can correct the information.