Sony H400 vs RX10 III

The Sony Cyber-shot DSC-H400 and the Sony Cyber-shot DSC-RX10 III are two digital cameras that were officially introduced, respectively, in February 2014 and March 2016. Both the H400 and the RX10 III are fixed lens compact cameras that are based on a 1/2.3-inch (H400) and an one-inch (RX10 III) sensor. The H400 has a resolution of 19.9 megapixels, whereas the RX10 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 H400		Sony RX10 III
Fixed lens compact camera		Fixed lens compact camera
24.5-1550mm f/3.4-6.5		24-600mm f/2.4-4.0
19.9 MP – 1/2.3" sensor		20 MP – 1" sensor
720/30p Video		4K/30p Video
ISO 80-3,200		ISO 100-12,800 (64 - 25,600)
Electronic viewfinder (210k dots)		Electronic viewfinder (2359k dots)
3.0" LCD – 460k dots		3.0" LCD – 1229k dots
Fixed screen (not touch-sensitive)		Tilting screen (no touchscreen)
0.7 shutter flaps per second		14 shutter flaps per second
not weather sealed		Weathersealed body
300 shots per battery charge		420 shots per battery charge
130 x 95 x 122 mm, 628 g		133 x 94 x 127 mm, 1051 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Cyber-shot DSC-H400 and the Sony Cyber-shot DSC-RX10 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 side-by-side display below illustrates the physical size and weight of the Sony H400 and the Sony RX10 III. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All size dimensions 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 RX10 III is somewhat larger (1 percent) than the Sony H400. Moreover, the RX10 III is substantially heavier (67 percent) than the H400. It is noteworthy in this context that the RX10 III is splash and dust-proof, while the H400 does not feature any corresponding weather-sealing.

Concerning battery life, the H400 gets 300 shots out of its Sony NP-BX1 battery, while the RX10 III can take 420 images on a single charge of its Sony NP-FW50 power pack. The power pack in the RX10 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. 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.		Sony H400	130 mm	95 mm	122 mm	628 g	300	n	Feb 2014	319	ebay.com
2.		Sony RX10 III	133 mm	94 mm	127 mm	1051 g	420	Y	Mar 2016	1,499	ebay.com
3.		Canon SX410	104 mm	69 mm	85 mm	325 g	185	n	Feb 2015	279	ebay.com
4.		Canon SX710	113 mm	66 mm	35 mm	269 g	230	n	Jan 2015	349	ebay.com
5.		Nikon L840	113 mm	78 mm	96 mm	538 g	590	n	Feb 2015	299	ebay.com
6.		Panasonic FZ2500	138 mm	102 mm	135 mm	915 g	350	n	Sep 2016	1,199	amazon.com
7.		Sony HX99	102 mm	58 mm	36 mm	242 g	370	n	Aug 2018	449	ebay.com
8.		Sony RX10 IV	133 mm	94 mm	145 mm	1095 g	400	Y	Sep 2017	1,699	amazon.com
9.		Sony RX100 V	102 mm	58 mm	41 mm	299 g	220	n	Oct 2016	999	ebay.com
10.		Sony HX80	102 mm	58 mm	36 mm	245 g	390	n	Mar 2016	349	ebay.com
11.		Sony HX350	130 mm	93 mm	103 mm	652 g	300	n	Dec 2016	449	ebay.com
12.		Sony RX10 II	129 mm	88 mm	102 mm	813 g	400	Y	Jun 2015	1,299	ebay.com
13.		Sony HX90V	102 mm	58 mm	36 mm	245 g	360	n	Apr 2015	429	ebay.com
14.		Sony HX400V	130 mm	93 mm	103 mm	660 g	300	n	Feb 2014	499	ebay.com
15.		Sony H300	128 mm	89 mm	92 mm	590 g	350	n	Feb 2014	219	ebay.com
16.		Sony RX10	129 mm	88 mm	102 mm	813 g	420	Y	Oct 2013	1,299	ebay.com
17.		Sony H200	123 mm	83 mm	87 mm	530 g	240	n	Jan 2013	249	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

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. The H400 was launched at a markedly lower price (by 79 percent) than the RX10 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Sony H400 features a 1/2.3-inch sensor and the Sony RX10 III an one-inch sensor. The sensor area in the RX10 III is 314 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 5.6 and 2.7. The sensor in the H400 has a native 4:3 aspect ratio, while the one in the RX10 III offers a 3:2 aspect.

Technology-wise, the RX10 III uses a more advanced image processing engine (BIONZ X) than the H400 (BIONZ), with benefits for noise reduction, color accuracy, and processing speed.

With 20MP, the RX10 III offers a higher resolution than the H400 (19.9MP), but the RX10 III nevertheless has larger individual pixels (pixel pitch of 2.41μm versus 1.19μm for the H400) due to its larger sensor. Moreover, the RX10 III is a much more recent model (by 2 years and 1 month) than the H400, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the H400 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The Sony Cyber-shot DSC-H400 has a native sensitivity range from ISO 80 to ISO 3200. The corresponding ISO settings for the Sony Cyber-shot DSC-RX10 III are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 64-25600.

In terms of underlying technology, the H400 is build around a CCD sensor, while the RX10 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.

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 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 H400	1/2.3	19.9	5152	3864	720/30p	20.1	11.4	630	45
2.		Sony RX10 III	1-inch	20.0	5472	3648	4K/30p	23.1	12.6	472	70
3.		Canon SX410	1/2.3	19.9	5152	3864	720/30p	20.2	11.6	720	47
4.		Canon SX710	1/2.3	20.2	5184	3888	1080/60p	20.2	11.6	712	47
5.		Nikon L840	1/2.3	15.9	4608	3456	1080/60i	20.2	11.6	721	47
6.		Panasonic FZ2500	1-inch	20.0	5472	3648	4K/30p	23.0	12.6	538	70
7.		Sony HX99	1/2.3	18.0	4896	3672	4K/30p	20.6	12.1	1058	51
8.		Sony RX10 IV	1-inch	20.0	5472	3648	4K/30p	22.0	12.2	408	63
9.		Sony RX100 V	1-inch	20.0	5472	3648	4K/30p	22.8	12.4	586	70
10.		Sony HX80	1/2.3	18.0	4896	3672	1080/60p	20.4	11.8	822	48
11.		Sony HX350	1/2.3	19.9	5152	3864	1080/60p	20.5	11.9	896	49
12.		Sony RX10 II	1-inch	20.0	5472	3648	4K/30p	23.0	12.6	531	70
13.		Sony HX90V	1/2.3	18.0	4896	3672	1080/60p	20.2	11.6	738	47
14.		Sony HX400V	1/2.3	20.2	5184	3888	1080/60p	20.1	11.4	629	45
15.		Sony H300	1/2.3	19.9	5152	3864	720/30p	20.1	11.4	630	45
16.		Sony RX10	1-inch	20.0	5472	3648	1080/60p	22.9	12.6	474	69
17.		Sony H200	1/2.3	15.2	5184	2930	720/30p	19.9	11.2	529	44
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 can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the RX10 III provides a better video resolution than the H400. It can shoot movie footage at 4K/30p, while the H400 is limited to 720/30p.

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 RX10 III offers a substantially higher resolution than the one in the H400 (2359k vs 210k dots). The adjacent table lists some of the other core features of the Sony H400 and Sony RX10 III 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 H400	210	n	3.0 / 460	fixed	n	1/2000s	0.7/s	Y	Y
2.		Sony RX10 III	2359	Y	3.0 / 1229	tilting	n	1/2000s	14.0/s	Y	Y
3.		Canon SX410	none	n	3.0 / 230	fixed	n	1/4000s	0.5/s	Y	Y
4.		Canon SX710	none	n	3.0 / 922	fixed	n	1/3200s	6.0/s	Y	Y
5.		Nikon L840	none	n	3.0 / 921	tilting	n	1/4000s	7.4/s	Y	Y
6.		Panasonic FZ2500	2360	n	3.0 / 1040	swivel	Y	1/4000s	12.0/s	Y	Y
7.		Sony HX99	638	n	3.0 / 922	tilting	Y	1/2000s	10.0/s	Y	Y
8.		Sony RX10 IV	2359	Y	3.0 / 1440	tilting	Y	1/2000s	24.0/s	Y	Y
9.		Sony RX100 V	2359	n	3.0 / 1229	tilting	n	1/2000s	24.0/s	Y	Y
10.		Sony HX80	638	n	3.0 / 922	tilting	n	1/2000s	10.0/s	Y	Y
11.		Sony HX350	202	n	3.0 / 922	tilting	n	1/4000s	10.0/s	Y	Y
12.		Sony RX10 II	2359	Y	3.0 / 1229	tilting	n	1/3200s	14.0/s	Y	Y
13.		Sony HX90V	638	n	3.0 / 921	tilting	n	1/2000s	10.0/s	Y	Y
14.		Sony HX400V	210	n	3.0 / 921	tilting	n	1/4000s	10.0/s	Y	Y
15.		Sony H300	none	n	3.0 / 460	fixed	n	1/1500s	0.8/s	Y	Y
16.		Sony RX10	1440	Y	3.0 / 1229	tilting	n	1/3200s	10.0/s	Y	Y
17.		Sony H200	none	n	3.0 / 460	fixed	n	1/1500s	0.8/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the RX10 III, but is missing on the H400 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, the RX10 III 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).

Both the H400 and the RX10 III have zoom lenses built in. The H400 has a 24.5-1550mm f/3.4-6.5 optic and the RX10 III offers a 24-600mm f/2.4-4.0 (focal lengths in full frame equivalent terms). Hence, the RX10 III provides a wider angle of view at the short end than the H400, but less tele-photo reach at the long end. The RX10 III offers the faster maximum aperture.

Concerning the storage of imaging data, both the H400 and the RX10 III write their files to SDXC or Memory Stick PRO Duo cards. The RX10 III supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the H400 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 Cyber-shot DSC-H400 and Sony Cyber-shot DSC-RX10 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 H400	-	mono / mono	-	-	micro	2.0	Y	-	-
2.		Sony RX10 III	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
3.		Canon SX410	-	stereo / mono	-	-	-	2.0	-	-	-
4.		Canon SX710	-	stereo / mono	-	-	micro	2.0	Y	Y	-
5.		Nikon L840	-	stereo / mono	-	-	micro	2.0	Y	Y	-
6.		Panasonic FZ2500	Y	stereo / mono	Y	Y	micro	2.0	Y	-	-
7.		Sony HX99	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
8.		Sony RX10 IV	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
9.		Sony RX100 V	-	stereo / mono	-	-	micro	2.0	Y	Y	-
10.		Sony HX80	-	stereo / mono	-	-	micro	2.0	Y	Y	-
11.		Sony HX350	-	stereo / mono	-	-	micro	2.0	-	-	-
12.		Sony RX10 II	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
13.		Sony HX90V	-	stereo / mono	-	-	micro	2.0	Y	Y	-
14.		Sony HX400V	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
15.		Sony H300	-	mono / mono	-	-	micro	2.0	Y	-	-
16.		Sony RX10	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
17.		Sony H200	-	mono / mono	-	-	-	2.0	-	-	-

It is notable that the RX10 III has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The H400 does not feature such a mic input.

Both the H400 and the RX10 III have been discontinued, but can regularly be found used on ebay. The RX10 III was replaced by the Sony RX10 IV, while the H400 does not have a direct successor. Further information on the features and operation of the H400 and RX10 III can be found, respectively, in the Sony H400 Manual (free pdf) or the online Sony RX10 III Manual.

Review summary

So how do things add up? Which of the two cameras – the Sony H400 or the Sony RX10 III – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

Arguments in favor of the Sony Cyber-shot DSC-H400:

• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• More tele-reach: Has a longer tele-lens for perspective compression and subject magnification.
• Less heavy: Is lighter (by 423g or 40 percent) and hence easier to carry around.
• More affordable: Was introduced into a lower priced category (79 percent cheaper at launch).
• More heavily discounted: Has been available for much longer (launched in February 2014).

Advantages of the Sony Cyber-shot DSC-RX10 III:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Better image quality: Is equipped with a larger and more technologically advanced sensor.
• Richer colors: The sensor size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
• Better jpgs: Has a more modern image processing engine (BIONZ X vs BIONZ).
• Better video: Provides higher definition movie capture (4K/30p vs 720/30p).
• Better sound: Can connect to an external microphone for higher quality sound recording.
• Better sound control: Has a headphone port that enables audio monitoring while recording.
• More detailed viewfinder: Has higher resolution electronic viewfinder (2359k vs 210k dots).
• Easier setting verification: Features a control panel on top to check shooting parameters.
• More detailed LCD: Has a higher resolution rear screen (1229k vs 460k dots).
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Faster burst: Shoots at higher frequency (14 vs 0.7 flaps/sec) to capture the decisive moment.
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• Better light gathering: Has a lens with a wider maximum aperture (f/2.4 vs f/3.4).
• Wider view: Has a wider-angle lens that facilitates landscape or interior shots.
• Longer lasting: Gets more shots (420 versus 300) out of a single battery charge.
• Easier travel charging: Can be conveniently charged via its USB port.
• Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
• Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
• More modern: Reflects 2 years and 1 month of technical progress since the H400 launch.

If the count of relative strengths (bullet points above) is taken as a measure, the RX10 III is the clear winner of the contest (24 : 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 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 H400 and the Sony RX10 III place the cameras among the top in their class? Find out in the latest Best Superzoom 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the H400 or the RX10 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 expert reviews 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 (USD)	Street Price
1.		Sony H400	..	o	..	..	3.5/5	3.5/5	Feb 2014	319	ebay.com
2.		Sony RX10 III	5/5	+	..	84/100	4.5/5	4.5/5	Mar 2016	1,499	ebay.com
3.		Canon SX410	..	o	..	..	..	..	Feb 2015	279	ebay.com
4.		Canon SX710	..	+	..	..	4/5	3.5/5	Jan 2015	349	ebay.com
5.		Nikon L840	..	+ +	..	..	3.5/5	4/5	Feb 2015	299	ebay.com
6.		Panasonic FZ2500	..	+	..	82/100	4.5/5	5/5	Sep 2016	1,199	amazon.com
7.		Sony HX99	..	..	..	..	4/5	4.5/5	Aug 2018	449	ebay.com
8.		Sony RX10 IV	5/5	+	3.5/5	84/100	4.5/5	5/5	Sep 2017	1,699	amazon.com
9.		Sony RX100 V	4.5/5	+ +	..	83/100	4/5	4.5/5	Oct 2016	999	ebay.com
10.		Sony HX80	..	..	..	..	..	..	Mar 2016	349	ebay.com
11.		Sony HX350	..	..	..	..	..	4/5	Dec 2016	449	ebay.com
12.		Sony RX10 II	5/5	+ +	..	82/100	4.5/5	4/5	Jun 2015	1,299	ebay.com
13.		Sony HX90V	4/5	+ +	..	..	4/5	4.5/5	Apr 2015	429	ebay.com
14.		Sony HX400V	4/5	+ +	..	..	4/5	4/5	Feb 2014	499	ebay.com
15.		Sony H300	..	+	..	..	4.5/5	4/5	Feb 2014	219	ebay.com
16.		Sony RX10	5/5	+	..	80/100	4.5/5	4.5/5	Oct 2013	1,299	ebay.com
17.		Sony H200	..	..	..	..	3.5/5	3.5/5	Jan 2013	249	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 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.

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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 use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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