Sony A5100 vs Nikon 1 J4

The Sony Alpha A5100 and the Nikon 1 J4 are two digital cameras that were officially introduced, respectively, in August 2014 and April 2014. Both the A5100 and the J4 are mirrorless interchangeable lens cameras that are based on an APS-C (A5100) and an one-inch (J4) sensor. The Sony has a resolution of 24 megapixels, whereas the Nikon provides 18.2 MP.

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

Headline Specifications

Sony A5100		Nikon 1 J4
Mirrorless system camera		Mirrorless system camera
Sony E mount lenses		Nikon 1 mount lenses
24 MP – APS-C sensor		18.2 MP – 1" sensor
1080/60p Video		1080/60p Video
ISO 100-25,600		ISO 160-12,800
No viewfinder, LCD framing		No viewfinder, LCD framing
3.0" LCD – 922k dots		3.0" LCD – 1037k dots
Tilting touchscreen		no rear screen
6 shutter flaps per second		60 shutter flaps per second
400 shots per battery charge		300 shots per battery charge
110 x 63 x 36 mm, 283 g		100 x 60 x 29 mm, 232 g

Check A5100 offers at
ebay.com
Check J4 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A5100 and the Nikon 1 J4? 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 Sony A5100 and the Nikon 1 J4 is provided 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 dimensions are rounded to the nearest millimeter.

The A5100 can be obtained in two different colors (black, white), while the J4 is available in four color-versions (black, silver, orange, white).

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon 1 J4 is notably smaller (13 percent) than the Sony A5100. Moreover, the J4 is markedly lighter (18 percent) than the A5100. In this context, it is worth noting that neither the A5100 nor the J4 are weather-sealed.

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 power pack in the A5100 can be charged via the USB port, so that it is not always necessary to take the battery charger along 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 (USD)	Street Price
1.		Sony A5100	110 mm	63 mm	36 mm	283 g	400	n	Aug 2014	549	ebay.com
2.		Nikon 1 J4	100 mm	60 mm	29 mm	232 g	300	n	Apr 2014	549	ebay.com
3.		Canon G9 X	98 mm	58 mm	31 mm	209 g	220	n	Oct 2015	529	ebay.com
4.		Canon SL1	117 mm	91 mm	69 mm	407 g	380	n	Mar 2013	549	ebay.com
5.		Nikon 1 J5	98 mm	60 mm	32 mm	231 g	250	n	Apr 2015	399	ebay.com
6.		Nikon 1 V2	109 mm	82 mm	46 mm	278 g	310	n	Oct 2012	799	ebay.com
7.		Nikon 1 V3	111 mm	65 mm	33 mm	381 g	310	n	Mar 2014	799	ebay.com
8.		Sony A3000	128 mm	91 mm	85 mm	411 g	470	n	Aug 2013	329	ebay.com
9.		Sony A5000	110 mm	63 mm	36 mm	269 g	420	n	Jan 2014	449	ebay.com
10.		Sony A6000	120 mm	67 mm	45 mm	344 g	360	n	Feb 2014	599	ebay.com
11.		Sony NEX-3	117 mm	62 mm	33 mm	297 g	330	n	May 2010	599	ebay.com
12.		Sony NEX-3N	110 mm	62 mm	35 mm	269 g	480	n	Feb 2013	499	ebay.com
13.		Sony NEX-5T	111 mm	59 mm	39 mm	276 g	330	n	Aug 2013	699	ebay.com
14.		Sony NEX-F3	117 mm	67 mm	42 mm	314 g	470	n	May 2012	599	ebay.com
15.		Sony RX100	102 mm	58 mm	36 mm	240 g	330	n	Jun 2012	649	ebay.com
16.		Sony RX100 II	102 mm	58 mm	38 mm	281 g	350	n	Jun 2013	749	ebay.com
17.		Sony RX100 IV	102 mm	58 mm	41 mm	298 g	280	n	Jun 2015	999	ebay.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 retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The two cameras under review were launched at the same price and fall into the same market segment. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Sony A5100 features an APS-C sensor and the Nikon 1 J4 an one-inch sensor. The sensor area in the J4 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.

With 24MP, the A5100 offers a higher resolution than the J4 (18.2MP), but the A5100 nevertheless has larger individual pixels (pixel pitch of 3.91μm versus 2.52μm for the J4) due to its larger sensor. Moreover, the A5100 is a somewhat more recent model (by 4 months) than the J4, and its sensor might have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels. Coming back to sensor resolution, it should be mentioned that the J4 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A5100 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A5100 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 1 J4 are 26.2 x 17.4 inches or 66.4 x 44.3 cm for good quality, 20.9 x 14 inches or 53.2 x 35.4 cm for very good quality, and 17.4 x 11.6 inches or 44.3 x 29.5 cm for excellent quality prints.

The Sony Alpha A5100 has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Nikon 1 J4 are ISO 160 to ISO 12800 (no boost).

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. 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. Of the two cameras under review, the A5100 provides substantially higher image quality than the J4, with an overall score that is 27 points higher. This advantage is based on 3 bits higher color depth, 2 EV in additional dynamic range, and 1.7 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.		Sony A5100	APS-C	24.0	6000	4000	1080/60p	23.8	12.7	1347	80
2.		Nikon 1 J4	1-inch	18.2	5232	3488	1080/60p	20.8	10.7	426	53
3.		Canon G9 X	1-inch	20.0	5472	3648	1080/60p	21.5	12.3	495	63
4.		Canon SL1	APS-C	17.9	5184	3456	1080/30p	21.8	11.3	843	63
5.		Nikon 1 J5	1-inch	20.7	5568	3712	4K/15p	21.1	12.0	479	65
6.		Nikon 1 V2	1-inch	14.2	4608	3072	1080/60p	20.2	10.8	403	50
7.		Nikon 1 V3	1-inch	18.2	5232	3488	1080/60p	20.8	10.7	384	52
8.		Sony A3000	APS-C	19.8	5456	3632	1080/60i	23.7	12.8	1068	78
9.		Sony A5000	APS-C	19.8	5456	3632	1080/60i	23.8	13.0	1089	79
10.		Sony A6000	APS-C	24.0	6000	4000	1080/60p	24.1	13.1	1347	82
11.		Sony NEX-3	APS-C	14.0	4592	3056	720/30p	22.1	12.0	830	68
12.		Sony NEX-3N	APS-C	16.0	4912	3264	1080/60i	22.8	12.5	1067	74
13.		Sony NEX-5T	APS-C	16.0	4912	3264	1080/60p	23.6	13.0	1015	78
14.		Sony NEX-F3	APS-C	16.0	4912	3264	1080/60i	22.7	12.3	1114	73
15.		Sony RX100	1-inch	20.0	5472	3648	1080/60p	22.6	12.4	390	66
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 also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (1080/60p).

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. The A5100 and the J4 are similar in the sense that neither of the two has a viewfinder. The images are, thus, framed using live view on the rear LCD. The adjacent table lists some of the other core features of the Sony A5100 and Nikon 1 J4 along with similar information for a selection of comparators.

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 A5100	none	n	3.0 / 922	tilting	Y	1/4000s	6.0/s	Y	n
2.		Nikon 1 J4	none	n	3.0 / 1037	Fixed	Y	1/4000s	60.0/s	Y	n
3.		Canon G9 X	none	n	3.0 / 1040	fixed	Y	1/2000s	6.0/s	Y	Y
4.		Canon SL1	optical	n	3.0 / 1040	fixed	Y	1/4000s	4.9/s	Y	n
5.		Nikon 1 J5	none	n	3.0 / 1037	tilting	Y	1/4000s	60.0/s	Y	n
6.		Nikon 1 V2	1440	n	3.0 / 921	fixed	n	1/4000s	15.0/s	Y	n
7.		Nikon 1 V3	optional	n	3.0 / 1037	tilting	Y	1/4000s	60.0/s	Y	n
8.		Sony A3000	202	n	3.0 / 230	fixed	n	1/4000s	2.5/s	Y	n
9.		Sony A5000	none	n	3.0 / 461	tilting	n	1/4000s	3.5/s	Y	n
10.		Sony A6000	1440	n	3.0 / 922	tilting	n	1/4000s	11.0/s	Y	n
11.		Sony NEX-3	optional	n	3.0 / 920	tilting	n	1/4000s	7.0/s	n	n
12.		Sony NEX-3N	optional	n	3.0 / 460	tilting	n	1/4000s	4.0/s	Y	n
13.		Sony NEX-5T	optional	n	3.0 / 922	tilting	Y	1/4000s	10.0/s	n	n
14.		Sony NEX-F3	optional	n	3.0 / 920	tilting	n	1/4000s	5.5/s	Y	n
15.		Sony RX100	none	n	3.0 / 1229	fixed	n	1/2000s	10.0/s	Y	Y
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.

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, the J4 is one of those camera that have an additional 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 A5100 writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the J4 uses micro SDXC cards. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 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 Sony Alpha A5100 and Nikon 1 J4 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 A5100	-	stereo / mono	-	-	micro	2.0	Y	Y	-
2.		Nikon 1 J4	-	stereo / mono	-	-	mini	2.0	Y	-	-
3.		Canon G9 X	-	stereo / mono	-	-	micro	2.0	Y	Y	-
4.		Canon SL1	Y	mono / mono	Y	-	mini	2.0	-	-	-
5.		Nikon 1 J5	-	stereo / mono	-	-	micro	2.0	Y	Y	-
6.		Nikon 1 V2	-	stereo / mono	-	-	mini	2.0	-	-	-
7.		Nikon 1 V3	-	stereo / mono	Y	-	mini	2.0	Y	-	-
8.		Sony A3000	Y	stereo / mono	-	-	mini	2.0	-	-	-
9.		Sony A5000	-	stereo / mono	-	-	micro	2.0	Y	Y	-
10.		Sony A6000	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
11.		Sony NEX-3	Y	stereo / mono	-	-	mini	2.0	-	-	-
12.		Sony NEX-3N	-	stereo / mono	-	-	micro	2.0	-	-	-
13.		Sony NEX-5T	Y	stereo / mono	-	-	mini	2.0	Y	Y	-
14.		Sony NEX-F3	Y	stereo / mono	-	-	mini	2.0	-	-	-
15.		Sony RX100	-	stereo / mono	-	-	micro	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	-

Both the A5100 and the J4 have been discontinued, but can regularly be found used on ebay. The J4 was replaced by the Nikon 1 J5, while the A5100 does not have a direct successor. Further information on the features and operation of the A5100 and J4 can be found, respectively, in the Sony A5100 Manual (free pdf) or the online Nikon 1 J4 Manual.

Review summary

So what is the bottom line? Is the Sony A5100 better than the Nikon 1 J4 or vice versa? Below is a summary of the relative strengths of each of the two contestants.

Advantages of the Sony Alpha A5100:

• More detail: Offers more megapixels (24 vs 18.2MP) with a 15% higher linear resolution.
• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Scores substantially higher (27 points) in the DXO overall assessment.
• Richer colors: Generates images with noticeably better colors (3 bits more color depth).
• More dynamic range: Captures a larger spectrum of light and dark details (2 EV of extra DR).
• Better low-light sensitivity: Requires less light for good images (1.7 stops ISO advantage).
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Longer lasting: Can take more shots (400 versus 300) on a single battery charge.
• Easier travel charging: Can be conveniently charged via its USB port.
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• More modern: Is somewhat more recent (announced 4 months after the J4).

Arguments in favor of the Nikon 1 J4:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• More detailed LCD: Has a higher resolution rear screen (1037k vs 922k dots).
• Faster burst: Shoots at higher frequency (60 vs 6 flaps/sec) to capture the decisive moment.
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• More compact: Is smaller (100x60mm vs 110x63mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 51g or 18 percent) and is thus easier to take along.
• More heavily discounted: Has been on the market for longer (launched in April 2014).

If the count of individual advantages (bullet points above) is taken as a guide, the A5100 is the clear winner of the match-up (11 : 7 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 Sony A5100 and the Nikon 1 J4 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the A5100 and the J4 in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

Expert reviews

This is why hands-on reviews by experts are important. 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.		Sony A5100	4.5/5	+	..	..	4.5/5	5/5	Aug 2014	549	ebay.com
2.		Nikon 1 J4	3/5	..	..	..	4.5/5	4/5	Apr 2014	549	ebay.com
3.		Canon G9 X	3.5/5	+ +	..	..	4.5/5	4.5/5	Oct 2015	529	ebay.com
4.		Canon SL1	4/5	+	..	78/100	4/5	4/5	Mar 2013	549	ebay.com
5.		Nikon 1 J5	..	..	..	..	4.5/5	4.5/5	Apr 2015	399	ebay.com
6.		Nikon 1 V2	3/5	..	..	..	4.5/5	4/5	Oct 2012	799	ebay.com
7.		Nikon 1 V3	3/5	..	..	76/100	4.5/5	4/5	Mar 2014	799	ebay.com
8.		Sony A3000	3/5	+	..	..	4/5	4/5	Aug 2013	329	ebay.com
9.		Sony A5000	3/5	+	..	..	4.5/5	4.5/5	Jan 2014	449	ebay.com
10.		Sony A6000	5/5	+	4.5/5	80/100	4.5/5	5/5	Feb 2014	599	ebay.com
11.		Sony NEX-3	..	..	..	70/100	4.5/5	4/5	May 2010	599	ebay.com
12.		Sony NEX-3N	3/5	..	..	..	4.5/5	4.5/5	Feb 2013	499	ebay.com
13.		Sony NEX-5T	..	..	..	..	4.5/5	4.5/5	Aug 2013	699	ebay.com
14.		Sony NEX-F3	4/5	..	..	74/100	4.5/5	4.5/5	May 2012	599	ebay.com
15.		Sony RX100	5/5	+ +	..	78/100	4/5	5/5	Jun 2012	649	ebay.com
16.		Sony RX100 II	5/5	+ +	..	79/100	4.5/5	4.5/5	Jun 2013	749	ebay.com
17.		Sony RX100 IV	4.5/5	+ +	..	85/100	4/5	4.5/5	Jun 2015	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. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Check A5100 offers at
ebay.com
Check J4 offers at
ebay.com

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 use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

~

Check A5100 offers at
ebay.com
Check J4 offers at
ebay.com

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