Sony NEX-5T vs RX100 III

The Sony Alpha NEX-5T and the Sony Cyber-shot DSC-RX100 III are two digital cameras that were announced, respectively, in August 2013 and May 2014. The NEX-5T is a mirrorless interchangeable lens camera, while the RX100 III is a fixed lens compact. The cameras are based on an APS-C (NEX-5T) and an one-inch (RX100 III) sensor. The NEX-5T has a resolution of 16 megapixels, whereas the RX100 III provides 20 MP.

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

Headline Specifications

Sony NEX-5T		Sony RX100 III
Mirrorless system camera		Fixed lens compact camera
Sony E mount lenses		24-70mm f/1.8-2.8
16 MP – APS-C sensor		20 MP – 1" sensor
1080/60p Video		1080/60p Video
ISO 100-25,600		ISO 100-12,800 (80 - 25,600)
Viewfinder optional		Electronic viewfinder (1440k dots)
3.0" LCD – 922k dots		3.0" LCD – 1229k dots
Tilting touchscreen		Tilting screen (no touchscreen)
10 shutter flaps per second		10 shutter flaps per second
330 shots per battery charge		320 shots per battery charge
111 x 59 x 39 mm, 276 g		102 x 58 x 41 mm, 290 g

Check NEX-5T offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha NEX-5T and the Sony Cyber-shot DSC-RX100 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

The physical size and weight of the Sony NEX-5T and the Sony RX100 III are illustrated in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth measures are rounded to the nearest millimeter.

The NEX-5T can be obtained in two different colors (black, silver), while the RX100 III is only available in black.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony RX100 III is notably smaller (10 percent) than the Sony NEX-5T. In this context, it is worth noting that neither the NEX-5T nor the RX100 III are weather-sealed.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 III has a lens built in, whereas the NEX-5T is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the NEX-5T and their specifications in the Sony E-Mount Lens Catalog.

Concerning battery life, the NEX-5T gets 330 shots out of its Sony NP-FW50 battery, while the RX100 III can take 320 images on a single charge of its Sony NP-BX1 power pack. The power pack in the RX100 III can be charged via the USB port, 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. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Sony NEX-5T	111 mm	59 mm	39 mm	276 g	330	n	Aug 2013	US$ 699	ebay.com
2.		Sony RX100 III	102 mm	58 mm	41 mm	290 g	320	n	May 2014	US$ 799	ebay.com
3.		Canon G5 X	112 mm	76 mm	44 mm	353 g	210	n	Oct 2015	US$ 799	ebay.com
4.		Canon G7 X	103 mm	60 mm	40 mm	304 g	210	n	Sep 2014	US$ 699	ebay.com
5.		Panasonic FZ1000	137 mm	99 mm	131 mm	831 g	360	n	Jun 2014	US$ 899	ebay.com
6.		Sony A5100	110 mm	63 mm	36 mm	283 g	400	n	Aug 2014	US$ 549	ebay.com
7.		Sony A6000	120 mm	67 mm	45 mm	344 g	360	n	Feb 2014	US$ 599	ebay.com
8.		Sony NEX-3	117 mm	62 mm	33 mm	297 g	330	n	May 2010	US$ 599	ebay.com
9.		Sony NEX-3N	110 mm	62 mm	35 mm	269 g	480	n	Feb 2013	US$ 499	ebay.com
10.		Sony NEX-5	111 mm	59 mm	38 mm	287 g	330	n	May 2010	US$ 699	ebay.com
11.		Sony NEX-5N	111 mm	59 mm	38 mm	269 g	460	n	Aug 2011	US$ 699	ebay.com
12.		Sony NEX-5R	111 mm	59 mm	39 mm	276 g	330	n	Aug 2012	US$ 749	ebay.com
13.		Sony NEX-6	120 mm	67 mm	43 mm	345 g	360	n	Sep 2012	US$ 999	ebay.com
14.		Sony NEX-C3	110 mm	60 mm	33 mm	225 g	400	n	Jun 2011	US$ 599	ebay.com
15.		Sony NEX-F3	117 mm	67 mm	42 mm	314 g	470	n	May 2012	US$ 599	ebay.com
16.		Sony RX100 II	102 mm	58 mm	38 mm	281 g	350	n	Jun 2013	US$ 749	ebay.com
17.		Sony RX100 IV	102 mm	58 mm	41 mm	298 g	280	n	Jun 2015	US$ 999	ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. 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 imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixels 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.

Of the two cameras under consideration, the Sony NEX-5T features an APS-C sensor and the Sony RX100 III an one-inch sensor. The sensor area in the RX100 III is 68 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Technology-wise, the RX100 III uses a more advanced image processing engine (BIONZ X) than the NEX-5T (BIONZ), with benefits for noise reduction, color accuracy, and processing speed.

Despite having a smaller sensor, the RX100 III offers a higher resolution of 20 megapixels, compared with 16 MP of the NEX-5T. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 4.78μm for the NEX-5T). However, it should be noted that the RX100 III is a somewhat more recent model (by 8 months) than the NEX-5T, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage.

The resolution advantage of the Sony RX100 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the RX100 III for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Sony NEX-5T are 24.6 x 16.3 inches or 62.4 x 41.5 cm for good quality, 19.6 x 13.1 inches or 49.9 x 33.2 cm for very good quality, and 16.4 x 10.9 inches or 41.6 x 27.6 cm for excellent quality prints.

The Sony Alpha NEX-5T has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Sony Cyber-shot DSC-RX100 III are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 80-25600.

In terms of underlying technology, the NEX-5T is build around a CMOS sensor, while the RX100 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 NEX-5T provides substantially higher image quality than the RX100 III, with an overall score that is 11 points higher. This advantage is based on 1.2 bits higher color depth, 0.7 EV in additional dynamic range, and 1 stops in additional low light sensitivity. 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.		Sony NEX-5T	APS-C	16.0	4912	3264	1080/60p	23.6	13.0	1015	78
2.		Sony RX100 III	1-inch	20.0	5472	3648	1080/60p	22.4	12.3	495	67
3.		Canon G5 X	1-inch	20.0	5472	3648	1080/60p	21.4	12.3	471	62
4.		Canon G7 X	1-inch	20.0	5472	3648	1080/60p	23.0	12.7	556	71
5.		Panasonic FZ1000	1-inch	20.0	5472	3648	4K/30p	22.1	11.7	517	64
6.		Sony A5100	APS-C	24.0	6000	4000	1080/60p	23.8	12.7	1347	80
7.		Sony A6000	APS-C	24.0	6000	4000	1080/60p	24.1	13.1	1347	82
8.		Sony NEX-3	APS-C	14.0	4592	3056	720/30p	22.1	12.0	830	68
9.		Sony NEX-3N	APS-C	16.0	4912	3264	1080/60i	22.8	12.5	1067	74
10.		Sony NEX-5	APS-C	14.0	4592	3056	1080/60i	22.2	12.2	796	69
11.		Sony NEX-5N	APS-C	16.0	4912	3264	1080/60i	23.6	12.7	1079	77
12.		Sony NEX-5R	APS-C	16.0	4912	3264	1080/60i	23.7	13.1	910	78
13.		Sony NEX-6	APS-C	16.0	4912	3264	1080/60i	23.7	13.1	1018	78
14.		Sony NEX-C3	APS-C	16.0	4912	3264	720/30p	22.7	12.2	1083	73
15.		Sony NEX-F3	APS-C	16.0	4912	3264	1080/60i	22.7	12.3	1114	73
16.		Sony RX100 II	1-inch	20.0	5472	3648	1080/60p	22.5	12.4	483	67
17.		Sony RX100 IV	1-inch	20.0	5472	3648	4K/30p	22.8	12.6	591	70

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (1080/60p).

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the RX100 III has an electronic viewfinder (1440k dots), which can be very helpful when shooting in bright sunlight. In contrast, the NEX-5T relies on live view and the rear LCD for framing. That said, the NEX-5T can be equipped with an optional viewfinder – the FDA-EV1S. The following table reports on some other key feature differences and similarities of the Sony NEX-5T, the Sony RX100 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.		Sony NEX-5T	optional	n	3.0 / 922	tilting	Y	1/4000s	10.0/s	n	n
2.		Sony RX100 III	1440	n	3.0 / 1229	tilting	n	1/2000s	10.0/s	Y	Y
3.		Canon G5 X	2360	n	3.0 / 1040	swivel	Y	1/2000s	5.9/s	Y	Y
4.		Canon G7 X	none	n	3.0 / 1040	tilting	Y	1/2000s	6.5/s	Y	Y
5.		Panasonic FZ1000	2359	n	3.0 / 921	swivel	n	1/4000s	12.0/s	Y	Y
6.		Sony A5100	none	n	3.0 / 922	tilting	Y	1/4000s	6.0/s	Y	n
7.		Sony A6000	1440	n	3.0 / 922	tilting	n	1/4000s	11.0/s	Y	n
8.		Sony NEX-3	optional	n	3.0 / 920	tilting	n	1/4000s	7.0/s	n	n
9.		Sony NEX-3N	optional	n	3.0 / 460	tilting	n	1/4000s	4.0/s	Y	n
10.		Sony NEX-5	optional	n	3.0 / 920	tilting	n	1/4000s	7.0/s	n	n
11.		Sony NEX-5N	optional	n	3.0 / 920	tilting	Y	1/4000s	10.0/s	n	n
12.		Sony NEX-5R	optional	n	3.0 / 920	tilting	Y	1/4000s	10.0/s	n	n
13.		Sony NEX-6	2359	n	3.0 / 921	tilting	n	1/4000s	10.0/s	Y	n
14.		Sony NEX-C3	optional	n	3.0 / 920	tilting	n	1/4000s	5.5/s	n	n
15.		Sony NEX-F3	optional	n	3.0 / 920	tilting	n	1/4000s	5.5/s	Y	n
16.		Sony RX100 II	optional	n	3.0 / 1229	tilting	n	1/2000s	10.0/s	Y	Y
17.		Sony RX100 IV	2359	n	3.0 / 1228	tilting	n	1/2000s	16.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The NEX-5T has a touchscreen, while the RX100 III has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

Concerning the storage of imaging data, both the NEX-5T and the RX100 III write their files to SDXC or Memory Stick PRO Duo cards. The RX100 III supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the NEX-5T cannot take advantage of Ultra High Speed SD cards.

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 Sony Alpha NEX-5T and Sony Cyber-shot DSC-RX100 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.		Sony NEX-5T	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
2.		Sony RX100 III	-	stereo / mono	-	-	micro	2.0	Y	Y	-
3.		Canon G5 X	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
4.		Canon G7 X	-	stereo / mono	-	-	micro	2.0	Y	Y	-
5.		Panasonic FZ1000	Y	stereo / mono	Y	-	micro	2.0	Y	Y	-
6.		Sony A5100	-	stereo / mono	-	-	micro	2.0	Y	Y	-
7.		Sony A6000	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
8.		Sony NEX-3	Y	stereo / mono	-	-	mini	2.0	-	-	-
9.		Sony NEX-3N	-	stereo / mono	-	-	micro	2.0	-	-	-
10.		Sony NEX-5	Y	stereo / mono	-	-	mini	2.0	-	-	-
11.		Sony NEX-5N	Y	stereo / mono	-	-	mini	2.0	-	-	-
12.		Sony NEX-5R	Y	stereo / mono	-	-	mini	2.0	Y	-	-
13.		Sony NEX-6	Y	stereo / mono	-	-	mini	2.0	Y	-	-
14.		Sony NEX-C3	Y	stereo / mono	-	-	mini	2.0	-	-	-
15.		Sony NEX-F3	Y	stereo / mono	-	-	mini	2.0	-	-	-
16.		Sony RX100 II	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
17.		Sony RX100 IV	-	stereo / mono	-	-	micro	2.0	Y	Y	-

It is notable that the NEX-5T has a hotshoe, while the RX100 III does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Both the NEX-5T and the RX100 III have been discontinued, but can regularly be found used on ebay. The NEX-5T was replaced by the Sony A5100, while the RX100 III was followed by the Sony RX100 IV. Further information on the features and operation of the NEX-5T and RX100 III can be found, respectively, in the Sony NEX-5T Manual (free pdf) or the online Sony RX100 III Manual.

Review summary

So what conclusions can be drawn? Is there a clear favorite between the Sony NEX-5T and the Sony RX100 III? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Reasons to prefer the Sony Alpha NEX-5T:

• Better image quality: Scores substantially higher (11 points) in the DXO overall assessment.
• Richer colors: Generates images with noticeably better colors (1.2 bits more color depth).
• More dynamic range: Captures a larger spectrum of light and dark details (0.7 EV of extra DR).
• Better low-light sensitivity: Requires less light for good images (1 stops ISO advantage).
• Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
• Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• More heavily discounted: Has been on the market for longer (launched in August 2013).

Arguments in favor of the Sony Cyber-shot DSC-RX100 III:

• More detail: Has more megapixels (20 vs 16MP), which boosts linear resolution by 12%.
• Better jpgs: Has a more modern image processing engine (BIONZ X vs BIONZ).
• Easier framing: Has an electronic viewfinder for image composition and settings control.
• More detailed LCD: Has a higher resolution rear screen (1229k vs 922k dots).
• Ready to shoot: Has an integrated lens, whereas the NEX-5T necessitates an extra lens.
• Easier travel charging: Can be conveniently charged via its USB port.
• Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
• Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Was introduced somewhat (8 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the RX100 III comes out slightly ahead of the NEX-5T (10 : 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 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 Sony NEX-5T and the Sony RX100 III place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Travel-Zoom Camera listings 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the NEX-5T or the RX100 III. 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 table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.		Sony NEX-5T	..	..	..	..	4.5/5	4.5/5	Aug 2013	US$ 699	ebay.com
2.		Sony RX100 III	5/5	+ +	..	82/100	4.5/5	5/5	May 2014	US$ 799	ebay.com
3.		Canon G5 X	5/5	+ +	..	78/100	4.5/5	4.5/5	Oct 2015	US$ 799	ebay.com
4.		Canon G7 X	4/5	+ +	..	77/100	4.5/5	4.5/5	Sep 2014	US$ 699	ebay.com
5.		Panasonic FZ1000	4/5	+ +	..	82/100	4.5/5	4.5/5	Jun 2014	US$ 899	ebay.com
6.		Sony A5100	4.5/5	+	..	..	4.5/5	5/5	Aug 2014	US$ 549	ebay.com
7.		Sony A6000	5/5	+	4.5/5	80/100	4.5/5	5/5	Feb 2014	US$ 599	ebay.com
8.		Sony NEX-3	..	..	..	70/100	4.5/5	4/5	May 2010	US$ 599	ebay.com
9.		Sony NEX-3N	3/5	..	..	..	4.5/5	4.5/5	Feb 2013	US$ 499	ebay.com
10.		Sony NEX-5	3/5	+ +	..	71/100	4.5/5	4/5	May 2010	US$ 699	ebay.com
11.		Sony NEX-5N	3/5	+ +	..	79/100	4.5/5	4.5/5	Aug 2011	US$ 699	ebay.com
12.		Sony NEX-5R	..	..	..	..	4.5/5	4.5/5	Aug 2012	US$ 749	ebay.com
13.		Sony NEX-6	5/5	+ +	..	78/100	4.5/5	4.5/5	Sep 2012	US$ 999	ebay.com
14.		Sony NEX-C3	3/5	+ +	..	74/100	4.5/5	4/5	Jun 2011	US$ 599	ebay.com
15.		Sony NEX-F3	4/5	..	..	74/100	4.5/5	4.5/5	May 2012	US$ 599	ebay.com
16.		Sony RX100 II	5/5	+ +	..	79/100	4.5/5	4.5/5	Jun 2013	US$ 749	ebay.com
17.		Sony RX100 IV	4.5/5	+ +	..	85/100	4/5	4.5/5	Jun 2015	US$ 999	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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