Leica C-LUX vs Sony RX10 IV

The Leica C-LUX and the Sony Cyber-shot DSC-RX10 IV are two digital cameras that were revealed to the public, respectively, in June 2018 and September 2017. Both the C-LUX and the RX10 IV are fixed lens compact cameras that are equipped with an one-inch sensor. Both cameras offer a resolution of 20 megapixels.

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

Headline Specifications

Leica C-LUX		Sony RX10 IV
Fixed lens compact camera		Fixed lens compact camera
24-360mm f/3.3-6.4		24-600mm f/2.4-4.0
20 MP – 1" sensor		20 MP – 1" sensor
4K/30p Video		4K/30p Video
ISO 125-12,800 (80 - 25,600)		ISO 100-12,800 (64 - 25,600)
Electronic viewfinder (2330k dots)		Electronic viewfinder (2359k dots)
3.0" LCD – 1240k dots		3.0" LCD – 1440k dots
Fixed touchscreen		Tilting touchscreen
10 shutter flaps per second		24 shutter flaps per second
not weather sealed		Weathersealed body
370 shots per battery charge		400 shots per battery charge
113 x 67 x 46 mm, 340 g		133 x 94 x 145 mm, 1095 g

Check C-LUX offers at
ebay.com
Check RX10 IV price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Leica C-LUX and the Sony Cyber-shot DSC-RX10 IV? 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 Leica C-LUX and the Sony RX10 IV 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 C-LUX can be obtained in two different colors (gold, blue), while the RX10 IV 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 RX10 IV is considerably larger (65 percent) than the Leica C-LUX. Moreover, the RX10 IV is substantially heavier (222 percent) than the C-LUX. It is noteworthy in this context that the RX10 IV is splash and dust-proof, while the C-LUX does not feature any corresponding weather-sealing.

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

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras 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.		Leica C-LUX	113 mm	67 mm	46 mm	340 g	370	n	Jun 2018	1,049	ebay.com
2.		Sony RX10 IV	133 mm	94 mm	145 mm	1095 g	400	Y	Sep 2017	1,699	amazon.com
3.		Canon G5 X Mark II	111 mm	61 mm	46 mm	340 g	230	n	Jul 2019	899	ebay.com
4.		Leica V-LUX 5	136 mm	97 mm	131 mm	812 g	350	n	Jul 2019	1,249	amazon.com
5.		Leica D-LUX 7	115 mm	66 mm	65 mm	392 g	300	n	Nov 2018	1,195	ebay.com
6.		Panasonic FZ1000 II	136 mm	97 mm	131 mm	810 g	350	n	Feb 2019	899	amazon.com
7.		Panasonic LX100 II	115 mm	66 mm	65 mm	392 g	300	n	Aug 2018	999	ebay.com
8.		Panasonic FZ1000	137 mm	99 mm	131 mm	831 g	360	n	Jun 2014	899	ebay.com
9.		Sony RX100 VII	102 mm	58 mm	43 mm	302 g	260	n	Jul 2019	1,199	amazon.com
10.		Sony RX100 VI	102 mm	58 mm	43 mm	301 g	240	n	Jun 2018	1,199	ebay.com
11.		Sony RX10 III	133 mm	94 mm	127 mm	1051 g	420	Y	Mar 2016	1,499	ebay.com
12.		Sony RX100 V	102 mm	58 mm	41 mm	299 g	220	n	Oct 2016	999	ebay.com
13.		Sony RX10 II	129 mm	88 mm	102 mm	813 g	400	Y	Jun 2015	1,299	ebay.com
14.		Sony RX100 IV	102 mm	58 mm	41 mm	298 g	280	n	Jun 2015	999	ebay.com
15.		Sony RX10	129 mm	88 mm	102 mm	813 g	420	Y	Oct 2013	1,299	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 obviously take relative prices into account. 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 C-LUX was launched at a markedly lower price (by 38 percent) than the RX10 IV, 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 imaging sensor is a crucial determinant 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 associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature an one-inch sensor and have a format factor (sometimes also referred to as "crop factor") of 2.7. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 20 megapixels. This similarity in sensor specs implies that both the C-LUX and the RX10 IV have the same pixel density, as well as the same pixel size. It should, however, be noted that the C-LUX is a somewhat more recent model (by 9 months) than the RX10 IV, and its sensor might have benefitted from technological advances during this time.

The RX10 IV has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Leica C-LUX has a native sensitivity range from ISO 125 to ISO 12800, which can be extended to ISO 80-25600. The corresponding ISO settings for the Sony Cyber-shot DSC-RX10 IV are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 64-25600.

In terms of underlying technology, the C-LUX is build around a CMOS sensor, while the RX10 IV 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 determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). 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.		Leica C-LUX	1-inch	20.0	5472	3648	4K/30p	22.1	12.3	481	64
2.		Sony RX10 IV	1-inch	20.0	5472	3648	4K/30p	22.0	12.2	408	63
3.		Canon G5 X Mark II	1-inch	20.0	5472	3648	4K/30p	22.2	12.4	583	65
4.		Leica V-LUX 5	1-inch	20.0	5472	3648	4K/30p	22.2	12.4	584	65
5.		Leica D-LUX 7	Four Thirds	16.8	4736	3552	4K/30p	22.9	12.8	1002	72
6.		Panasonic FZ1000 II	1-inch	20.0	5472	3648	4K/30p	22.1	12.4	546	65
7.		Panasonic LX100 II	Four Thirds	16.8	4736	3552	4K/30p	22.8	12.7	979	72
8.		Panasonic FZ1000	1-inch	20.0	5472	3648	4K/30p	22.1	11.7	517	64
9.		Sony RX100 VII	1-inch	20.0	5472	3648	4K/30p	21.8	12.4	418	63
10.		Sony RX100 VI	1-inch	20.0	5472	3648	4K/30p	22.1	12.3	478	64
11.		Sony RX10 III	1-inch	20.0	5472	3648	4K/30p	23.1	12.6	472	70
12.		Sony RX100 V	1-inch	20.0	5472	3648	4K/30p	22.8	12.4	586	70
13.		Sony RX10 II	1-inch	20.0	5472	3648	4K/30p	23.0	12.6	531	70
14.		Sony RX100 IV	1-inch	20.0	5472	3648	4K/30p	22.8	12.6	591	70
15.		Sony RX10	1-inch	20.0	5472	3648	1080/60p	22.9	12.6	474	69
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. 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 (4K/30p).

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 RX10 IV offers a slightly higher resolution than the one in the C-LUX (2359k vs 2330k dots). The adjacent table lists some of the other core features of the Leica C-LUX and Sony RX10 IV 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.		Leica C-LUX	2330	n	3.0 / 1240	fixed	Y	1/2000s	10.0/s	Y	Y
2.		Sony RX10 IV	2359	Y	3.0 / 1440	tilting	Y	1/2000s	24.0/s	Y	Y
3.		Canon G5 X Mark II	2360	n	3.0 / 1040	tilting	Y	1/2000s	30/s	Y	Y
4.		Leica V-LUX 5	2360	n	3.0 / 1240	swivel	Y	1/4000s	12.0/s	Y	Y
5.		Leica D-LUX 7	2764	n	3.0 / 1240	fixed	Y	1/4000s	11.0/s	n	Y
6.		Panasonic FZ1000 II	2360	n	3.0 / 1240	swivel	Y	1/4000s	12.0/s	Y	Y
7.		Panasonic LX100 II	2764	n	3.0 / 1240	fixed	Y	1/4000s	11.0/s	n	Y
8.		Panasonic FZ1000	2359	n	3.0 / 921	swivel	n	1/4000s	12.0/s	Y	Y
9.		Sony RX100 VII	2359	n	3.0 / 921	tilting	Y	1/2000s	90.0/s	Y	Y
10.		Sony RX100 VI	2359	n	3.0 / 1229	tilting	Y	1/2000s	24.0/s	Y	Y
11.		Sony RX10 III	2359	Y	3.0 / 1229	tilting	n	1/2000s	14.0/s	Y	Y
12.		Sony RX100 V	2359	n	3.0 / 1229	tilting	n	1/2000s	24.0/s	Y	Y
13.		Sony RX10 II	2359	Y	3.0 / 1229	tilting	n	1/3200s	14.0/s	Y	Y
14.		Sony RX100 IV	2359	n	3.0 / 1228	tilting	n	1/2000s	16.0/s	Y	Y
15.		Sony RX10	1440	Y	3.0 / 1229	tilting	n	1/3200s	10.0/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 IV, but is missing on the C-LUX 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 Leica C-LUX 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.

Both the C-LUX and the RX10 IV have zoom lenses built in. The C-LUX has a 24-360mm f/3.3-6.4 optic and the RX10 IV offers a 24-600mm f/2.4-4.0 (focal lengths in full frame equivalent terms). Hence, the Leica and Sony provide the same view at the wide-angle end, but the Sony has more tele-photo reach at the long end. The RX10 IV offers the faster maximum aperture.

The C-LUX writes its imaging data to SDXC cards, while the RX10 IV uses SDXC or Memory Stick PRO Duo 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 Leica C-LUX and Sony Cyber-shot DSC-RX10 IV 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.		Leica C-LUX	-	stereo / mono	-	-	micro	2.0	Y	-	-
2.		Sony RX10 IV	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
3.		Canon G5 X Mark II	-	stereo / mono	-	-	micro	3.1	Y	-	Y
4.		Leica V-LUX 5	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
5.		Leica D-LUX 7	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
6.		Panasonic FZ1000 II	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
7.		Panasonic LX100 II	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
8.		Panasonic FZ1000	Y	stereo / mono	Y	-	micro	2.0	Y	Y	-
9.		Sony RX100 VII	-	stereo / mono	Y	-	micro	2.0	Y	Y	Y
10.		Sony RX100 VI	-	stereo / mono	-	-	micro	2.0	Y	Y	Y
11.		Sony RX10 III	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
12.		Sony RX100 V	-	stereo / mono	-	-	micro	2.0	Y	Y	-
13.		Sony RX10 II	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-
14.		Sony RX100 IV	-	stereo / mono	-	-	micro	2.0	Y	Y	-
15.		Sony RX10	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	-

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

The RX10 IV is a recent model that features in the current product line-up of Sony. In contrast, the C-LUX has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the C-LUX from Leica. Further information on the features and operation of the C-LUX and RX10 IV can be found, respectively, in the Leica C-LUX Manual (free pdf) or the online Sony RX10 IV Manual.

Review summary

So what is the bottom line? Which of the two cameras – the Leica C-LUX or the Sony RX10 IV – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.

Advantages of the Leica C-LUX:

• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More compact: Is smaller (113x67mm vs 133x94mm) and thus needs less room in the bag.
• Less heavy: Is lighter (by 755g or 69 percent) and hence easier to carry around.
• More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
• More affordable: Was introduced into a lower priced category (38 percent cheaper at launch).
• More modern: Is somewhat more recent (announced 9 months after the RX10 IV).

Arguments in favor of the Sony Cyber-shot DSC-RX10 IV:

• Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
• 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.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.53x).
• Easier setting verification: Features a control panel on top to check shooting parameters.
• More detailed LCD: Has a higher resolution rear screen (1440k vs 1240k dots).
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Faster burst: Shoots at higher frequency (24 vs 10 flaps/sec) to capture the decisive moment.
• Better light gathering: Has a lens with a wider maximum aperture (f/2.4 vs f/3.3).
• More tele-reach: Has a longer tele-lens for perspective compression and subject magnification.
• 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.
• More heavily discounted: Has been on the market for longer (launched in September 2017).

If the count of individual advantages (bullet points above) is taken as a guide, the RX10 IV is the clear winner of the contest (14 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 Leica C-LUX and the Sony RX10 IV 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 technical specifications can provide a useful overview of the capabilities of different cameras, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the C-LUX or the RX10 IV. 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 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.		Leica C-LUX	..	..	3.5/5	..	4.5/5	4/5	Jun 2018	1,049	ebay.com
2.		Sony RX10 IV	5/5	+	3.5/5	84/100	4.5/5	5/5	Sep 2017	1,699	amazon.com
3.		Canon G5 X Mark II	4/5	+	4/5	82/100	..	4/5	Jul 2019	899	ebay.com
4.		Leica V-LUX 5	..	..	..	..	4/5	4/5	Jul 2019	1,249	amazon.com
5.		Leica D-LUX 7	..	..	..	..	..	4.5/5	Nov 2018	1,195	ebay.com
6.		Panasonic FZ1000 II	..	..	..	83/100	4.5/5	4.5/5	Feb 2019	899	amazon.com
7.		Panasonic LX100 II	4.5/5	+	4.2/5	82/100	4.5/5	4.5/5	Aug 2018	999	ebay.com
8.		Panasonic FZ1000	4/5	+ +	..	82/100	4.5/5	4.5/5	Jun 2014	899	ebay.com
9.		Sony RX100 VII	4.5/5	..	4/5	..	4/5	5/5	Jul 2019	1,199	amazon.com
10.		Sony RX100 VI	4.5/5	+ +	..	83/100	4/5	4.5/5	Jun 2018	1,199	ebay.com
11.		Sony RX10 III	5/5	+	..	84/100	4.5/5	4.5/5	Mar 2016	1,499	ebay.com
12.		Sony RX100 V	4.5/5	+ +	..	83/100	4/5	4.5/5	Oct 2016	999	ebay.com
13.		Sony RX10 II	5/5	+ +	..	82/100	4.5/5	4/5	Jun 2015	1,299	ebay.com
14.		Sony RX100 IV	4.5/5	+ +	..	85/100	4/5	4.5/5	Jun 2015	999	ebay.com
15.		Sony RX10	5/5	+	..	80/100	4.5/5	4.5/5	Oct 2013	1,299	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. 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.

Check C-LUX offers at
ebay.com
Check RX10 IV 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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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Check C-LUX offers at
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Check RX10 IV price at
amazon.com

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