Leica SL2 vs Zeiss ZX1

The Leica SL2 and the Zeiss ZX1 are two enthusiast cameras that were announced, respectively, in November 2019 and September 2018. The Leica SL2 is a mirrorless interchangeable lens camera, while the ZX1 is a fixed lens compact. Both cameras are equipped with a full frame sensor. The Leica has a resolution of 46.7 megapixels, whereas the Zeiss provides 37.4 MP.

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

Headline Specifications

Leica SL2		Zeiss ZX1
Mirrorless system camera		Fixed lens compact camera
Leica L mount lenses		35mm f/2.8
46.7 MP – Full Frame sensor		37.4 MP – Full Frame sensor
4K/60p Video		4K/30p Video
ISO 100-50,000		ISO 80-51,200
Electronic viewfinder (5760k dots)		Electronic viewfinder (6221k dots)
3.2" LCD – 2100k dots		4.3" LCD – 2765k dots
Fixed touchscreen		Fixed touchscreen
10 shutter flaps per second		3 shutter flaps per second
In-body stabilization		no shake reduction
Weathersealed body		not weather sealed
370 shots per battery charge		250 shots per battery charge
146 x 107 x 42 mm, 953 g		142 x 93 x 46 mm, 800 g

Check Leica SL2 price at
amazon.com
Check ZX1 offers at
ebay.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Leica SL2 and the Zeiss ZX1? 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 Leica SL2 and the Zeiss ZX1 are illustrated 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 Zeiss ZX1 is notably smaller (15 percent) than the Leica SL2. It is worth mentioning in this context that the Leica SL2 is splash and dust resistant, while the ZX1 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the ZX1 has a lens built in, whereas the Leica SL2 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup.

Concerning battery life, the Leica SL2 gets 370 shots out of its Leica BP-SCL4 battery, while the ZX1 can take 250 images on a single charge of its Zeiss DD-PS1A power pack. The power pack in the Leica SL2 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.		Leica SL2	146 mm	107 mm	42 mm	953 g	370	Y	Nov 2019	5,999	amazon.com
2.		Zeiss ZX1	142 mm	93 mm	46 mm	800 g	250	n	Sep 2018	5,999	ebay.com
3.		Leica Q2	130 mm	80 mm	92 mm	718 g	370	Y	Mar 2019	4,995	amazon.com
4.		Leica SL	147 mm	104 mm	39 mm	847 g	400	Y	Oct 2015	7,450	ebay.com
5.		Leica SL2-S	146 mm	107 mm	83 mm	931 g	510	Y	Dec 2020	4,895	amazon.com
6.		Leica SL3	141 mm	108 mm	85 mm	769 g	320	Y	Mar 2024	6,999	amazon.com
7.		Leica V-LUX 5	136 mm	97 mm	131 mm	812 g	350	n	Jul 2019	1,249	amazon.com
8.		Nikon Z7	134 mm	101 mm	67 mm	675 g	330	Y	Aug 2018	3,399	ebay.com
9.		Panasonic FZ1000	137 mm	99 mm	131 mm	831 g	360	n	Jun 2014	899	ebay.com
10.		Panasonic FZ1000 II	136 mm	97 mm	131 mm	810 g	350	n	Feb 2019	899	amazon.com
11.		Panasonic S1	149 mm	110 mm	97 mm	1017 g	400	Y	Feb 2019	2,499	amazon.com
12.		Panasonic S1H	151 mm	114 mm	110 mm	1052 g	400	Y	May 2019	3,999	amazon.com
13.		Panasonic S1R	149 mm	110 mm	97 mm	1016 g	380	Y	Feb 2019	3,699	amazon.com
14.		Pentax K-1 II	137 mm	110 mm	86 mm	1010 g	670	Y	Feb 2018	1,999	amazon.com
15.		Sony A99 II	143 mm	104 mm	76 mm	849 g	490	Y	Sep 2016	3,199	ebay.com
16.		Sony RX100 VI	102 mm	58 mm	43 mm	301 g	240	n	Jun 2018	1,199	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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. 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 a full frame sensor and have a format factor (sometimes also referred to as "crop factor") of 1.0. Within the spectrum of camera sensors, this places the review cameras among the large-sensor cameras that aim for top notch image quality. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

While the two cameras under review share the same sensor size, the Leica SL2 offers a higher resolution of 46.7 megapixels, compared with 37.4 MP of the ZX1. This megapixels advantage translates into a 12 percent gain in linear resolution. On the other hand, these sensor specs imply that the Leica SL2 has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.30μm versus 4.81μm for the ZX1). In this context, it should be noted, however, that the Leica SL2 is a somewhat more recent model (by 1 year and 1 month) than the ZX1, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the Leica SL2 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Leica SL2 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the Leica SL2 for good quality output (200 dots per inch) amounts to 41.8 x 27.9 inches or 106.3 x 70.9 cm, for very good quality (250 dpi) 33.5 x 22.3 inches or 85 x 56.7 cm, and for excellent quality (300 dpi) 27.9 x 18.6 inches or 70.8 x 47.3 cm. The corresponding values for the Zeiss ZX1 are 37.4 x 25 inches or 95.1 x 63.4 cm for good quality, 30 x 20 inches or 76.1 x 50.7 cm for very good quality, and 25 x 16.6 inches or 63.4 x 42.3 cm for excellent quality prints.

Unlike the ZX1, the Leica SL2 has the capacity to capture high quality composite images (187MP) by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).

The Leica SL2 has a native sensitivity range from ISO 100 to ISO 50000, which can be extended to ISO 50-50000. The corresponding ISO settings for the Zeiss ZX1 are ISO 80 to ISO 51200 (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 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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Leica SL2	Full Frame	46.7	8368	5584	4K/60p	25.3	14.3	2866	95
2.		Zeiss ZX1	Full Frame	37.4	7488	4992	4K/30p	25.2	14.1	2759	94
3.		Leica Q2	Full Frame	46.7	8368	5584	4K/30p	26.4	13.5	2491	96
4.		Leica SL	Full Frame	24.0	6000	4000	4K/30p	25.0	13.4	1821	88
5.		Leica SL2-S	Full Frame	24.0	6000	4000	4K/60p	25.2	14.1	3504	95
6.		Leica SL3	Full Frame	60.3	9520	6336	8K/30p	25.4	14.8	3295	97
7.		Leica V-LUX 5	1-inch	20.0	5472	3648	4K/30p	22.2	12.4	584	65
8.		Nikon Z7	Full Frame	45.4	8256	5504	4K/30p	26.3	14.6	2668	99
9.		Panasonic FZ1000	1-inch	20.0	5472	3648	4K/30p	22.1	11.7	517	64
10.		Panasonic FZ1000 II	1-inch	20.0	5472	3648	4K/30p	22.1	12.4	546	65
11.		Panasonic S1	Full Frame	24.0	6000	4000	4K/60p	25.2	14.5	3333	95
12.		Panasonic S1H	Full Frame	24.0	6000	4000	6K/30p	25.2	14.2	2805	94
13.		Panasonic S1R	Full Frame	46.7	8368	5584	4K/60p	26.4	14.1	3525	100
14.		Pentax K-1 II	Full Frame	36.2	7360	4912	1080/60i	25.1	14.0	2698	93
15.		Sony A99 II	Full Frame	42.2	7952	5304	4K/30p	25.4	13.4	2317	92
16.		Sony RX100 VI	1-inch	20.0	5472	3648	4K/30p	22.1	12.3	478	64
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 Leica SL2 provides a higher frame rate than the ZX1. It can shoot video footage at 4K/60p, while the Zeiss is limited to 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 ZX1 offers a slightly higher resolution than the one in the Leica SL2 (6221k vs 5760k dots). The following table reports on some other key feature differences and similarities of the Leica SL2, the Zeiss ZX1, 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.		Leica SL2	5760	Y	3.2 / 2100	fixed	Y	1/8000s	10.0/s	n	Y
2.		Zeiss ZX1	6221	n	4.3 / 2765	fixed	Y	1/1000s	3.0/s	n	n
3.		Leica Q2	3680	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	n	Y
4.		Leica SL	4400	Y	3.0 / 1040	fixed	Y	1/8000s	11.0/s	n	n
5.		Leica SL2-S	5760	Y	3.2 / 2100	fixed	Y	1/8000s	20.0/s	n	Y
6.		Leica SL3	5760	Y	3.2 / 2333	tilting	Y	1/8000s	5.0/s	n	Y
7.		Leica V-LUX 5	2360	n	3.0 / 1240	swivel	Y	1/4000s	12.0/s	Y	Y
8.		Nikon Z7	3690	Y	3.2 / 2100	tilting	Y	1/8000s	9.0/s	n	Y
9.		Panasonic FZ1000	2359	n	3.0 / 921	swivel	n	1/4000s	12.0/s	Y	Y
10.		Panasonic FZ1000 II	2360	n	3.0 / 1240	swivel	Y	1/4000s	12.0/s	Y	Y
11.		Panasonic S1	5760	Y	3.2 / 2100	full-flex	Y	1/8000s	9.0/s	n	Y
12.		Panasonic S1H	5760	Y	3.2 / 2330	swivel	Y	1/8000s	9.0/s	n	Y
13.		Panasonic S1R	5760	Y	3.2 / 2100	full-flex	Y	1/8000s	9.0/s	n	Y
14.		Pentax K-1 II	optical	Y	3.2 / 1037	full-flex	n	1/8000s	4.4/s	n	Y
15.		Sony A99 II	2400	Y	3.0 / 1229	full-flex	n	1/8000s	12.0/s	n	Y
16.		Sony RX100 VI	2359	n	3.0 / 1229	tilting	Y	1/2000s	24.0/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 Leica SL2, but is missing on the ZX1 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 SL2 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.

The Leica SL2 writes its imaging data to SDXC cards, while the ZX1 uses an internal SSD.

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 SL2 and Zeiss ZX1 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 SL2	Y	stereo / mono	Y	Y	full	3.1	Y	-	Y
2.		Zeiss ZX1	Y	stereo / mono	-	-	-	3.1	Y	Y	Y
3.		Leica Q2	Y	stereo / mono	-	-	-	-	Y	-	Y
4.		Leica SL	Y	stereo / mono	Y	Y	full	3.0	Y	-	-
5.		Leica SL2-S	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
6.		Leica SL3	Y	stereo / mono	Y	Y	full	3.1	Y	-	Y
7.		Leica V-LUX 5	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
8.		Nikon Z7	Y	stereo / mono	Y	Y	micro	3.1	Y	-	Y
9.		Panasonic FZ1000	Y	stereo / mono	Y	-	micro	2.0	Y	Y	-
10.		Panasonic FZ1000 II	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
11.		Panasonic S1	Y	stereo / mono	Y	Y	full	3.1	Y	-	Y
12.		Panasonic S1H	Y	stereo / mono	Y	Y	full	3.1	Y	-	Y
13.		Panasonic S1R	Y	stereo / mono	Y	Y	full	3.1	Y	-	Y
14.		Pentax K-1 II	Y	stereo / mono	Y	Y	micro	2.0	Y	-	-
15.		Sony A99 II	Y	stereo / mono	Y	Y	micro	2.0	Y	Y	Y
16.		Sony RX100 VI	-	stereo / mono	-	-	micro	2.0	Y	Y	Y

It is notable that the Leica SL2 has a microphone port, which is missing on the ZX1. Such an external microphone input can help to substantially improve the quality of audio recordings when a good external microphone is used.

Studio photographers will appreciate that the Leica SL2 (unlike the ZX1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The Leica SL2 is a recent model that features in the current product line-up of Leica. In contrast, the ZX1 has been discontinued (but can be found pre-owned on ebay). There has not been a direct replacement model for the ZX1 from Zeiss. Further information on the features and operation of the Leica SL2 and ZX1 can be found, respectively, in the Leica SL2 Manual (free pdf) or the online Zeiss ZX1 Manual.

Review summary

So what conclusions can be drawn? Is there a clear favorite between the Leica SL2 and the Zeiss ZX1? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

Reasons to prefer the Leica SL2:

• More detail: Offers more megapixels (46.7 vs 37.4MP) with a 12% higher linear resolution.
• Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
• High quality composites: Can combine several shots after pixel-shifting its sensor.
• Better video: Provides higher movie framerates (4K/60p versus 4K/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.
• Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.74x).
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/1000s) to freeze action.
• Faster burst: Shoots at higher frequency (10 vs 3 flaps/sec) to capture the decisive moment.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
• Longer lasting: Can take more shots (370 versus 250) on a single battery charge.
• Easier travel charging: Can be conveniently charged via its USB port.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• Sharper images: Has hand-shake reducing image stabilization built-in.
• 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.
• More modern: Is somewhat more recent (announced 1 year and 1 month after the ZX1).

Arguments in favor of the Zeiss ZX1:

• Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
• Larger screen: Has a bigger rear LCD (4.3" vs 3.2") for image review and settings control.
• More detailed LCD: Has a higher resolution rear screen (2765k vs 2100k dots).
• Ready to shoot: Has an integrated lens, whereas the Leica SL2 necessitates an extra lens.
• More compact: Is smaller (142x93mm vs 146x107mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight even though it has a lens built in (unlike the Leica SL2).
• 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 2018).

If the number of relative strengths (bullet points above) is taken as a guide, the Leica SL2 is the clear winner of the match-up (19 : 8 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 Leica SL2 and the Zeiss ZX1 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best Prime Lens Compact Camera listings 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 incomplete and does no justice, for example, to the way the Leica SL2 or the ZX1 perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

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.		Leica SL2	4/5	..	4.5/5	..	4.5/5	4/5	Nov 2019	5,999	amazon.com
2.		Zeiss ZX1	3/5	..	..	83/100	4/5	4/5	Sep 2018	5,999	ebay.com
3.		Leica Q2	..	..	4.5/5	84/100	4.5/5	4/5	Mar 2019	4,995	amazon.com
4.		Leica SL	4/5	..	4/5	84/100	4.5/5	4/5	Oct 2015	7,450	ebay.com
5.		Leica SL2-S	4/5	..	4/5	..	4.5/5	4.5/5	Dec 2020	4,895	amazon.com
6.		Leica SL3	..	..	4.5/5	..	..	4.5/5	Mar 2024	6,999	amazon.com
7.		Leica V-LUX 5	..	..	..	..	4/5	4/5	Jul 2019	1,249	amazon.com
8.		Nikon Z7	5/5	+	4.8/5	89/100	4.5/5	5/5	Aug 2018	3,399	ebay.com
9.		Panasonic FZ1000	4/5	+ +	..	82/100	4.5/5	4.5/5	Jun 2014	899	ebay.com
10.		Panasonic FZ1000 II	..	..	..	83/100	4.5/5	4.5/5	Feb 2019	899	amazon.com
11.		Panasonic S1	4.5/5	+ +	4.5/5	88/100	4.5/5	4/5	Feb 2019	2,499	amazon.com
12.		Panasonic S1H	..	..	4/5	90/100	..	..	May 2019	3,999	amazon.com
13.		Panasonic S1R	4.5/5	..	4.6/5	89/100	4.5/5	4.5/5	Feb 2019	3,699	amazon.com
14.		Pentax K-1 II	..	..	4.5/5	79/100	4.5/5	4.5/5	Feb 2018	1,999	amazon.com
15.		Sony A99 II	..	..	4.5/5	85/100	4.5/5	4.5/5	Sep 2016	3,199	ebay.com
16.		Sony RX100 VI	4.5/5	+ +	..	83/100	4/5	4.5/5	Jun 2018	1,199	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. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods 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 are interested in seeing how other cameras pair up, just make your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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