Leica S1 vs Panasonic S9

The Leica S1 Pro and the Panasonic Lumix DC-S9 are two digital cameras that were officially introduced, respectively, in August 1996 and May 2024. Both the S1 and the S9 are mirrorless interchangeable lens cameras that are based on a medium format (S1) and a full frame (S9) sensor. The Leica has a resolution of 26.4 megapixels, whereas the Panasonic provides 24 MP.

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

Headline Specifications

Leica S1		Panasonic S9
Mirrorless system camera		Mirrorless system camera
Leica R mount lenses		Leica L mount lenses
26.4 MP – Medium Format sensor		24 MP – Full Frame sensor
no Video		6K/30p Video
ISO 50-1,600		ISO 100-51,200 (50 - 204,800)
Optical viewfinder		No viewfinder, LCD framing
no LCD		3.0" LCD – 1840k dots
no rear screen		Swivel touchscreen
0.01 shutter flaps per second		30 shutter flaps per second
no shake reduction		In-body stabilization
339 x 214 x 119 mm, 2500 g		126 x 74 x 47 mm, 486 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Leica S1 Pro and the Panasonic Lumix DC-S9? 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 S1 and the Panasonic S9 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 dimensions are rounded to the nearest millimeter.

The S9 can be obtained in four different colors (black, blue, red, green), while the S1 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 Panasonic S9 is considerably smaller (87 percent) than the Leica S1. Moreover, the S9 is substantially lighter (81 percent) than the S1. In this context, it is worth noting that neither the S1 nor the S9 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 S9 can be charged via the USB port, 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	Street Price
1.		Leica S1	339 mm	214 mm	119 mm	2500 g	..	n	Aug 1996	US$ 21 499	ebay.com
2.		Panasonic S9	126 mm	74 mm	47 mm	486 g	470	n	May 2024	US$ 1 499	amazon.com
3.		Canon R8	133 mm	86 mm	70 mm	461 g	220	n	Feb 2023	US$ 1 499	amazon.com
4.		Canon RP	133 mm	85 mm	70 mm	485 g	250	n	Feb 2019	US$ 1 299	amazon.com
5.		Canon SL3	122 mm	93 mm	70 mm	449 g	1070	n	Apr 2019	US$ 599	amazon.com
6.		Fujifilm X-S20	128 mm	85 mm	65 mm	491 g	750	n	May 2023	US$ 1 299	amazon.com
7.		Fujifilm X-T30	118 mm	83 mm	47 mm	383 g	380	n	Feb 2019	US$ 899	ebay.com
8.		Leica CL	131 mm	78 mm	45 mm	403 g	220	n	Nov 2017	US$ 2 795	ebay.com
9.		Leica M-E Typ 240	139 mm	80 mm	42 mm	680 g	500	Y	Jun 2019	US$ 3 999	ebay.com
10.		Leica Q Typ 116	130 mm	80 mm	93 mm	640 g	300	n	Jun 2015	US$ 4 249	ebay.com
11.		Leica S2	160 mm	120 mm	80 mm	1410 g	..	Y	Sep 2008	US$ 22 999	ebay.com
12.		Leica TL2	134 mm	69 mm	33 mm	399 g	250	n	Jul 2017	US$ 1 949	ebay.com
13.		Panasonic GX9	124 mm	72 mm	47 mm	407 g	260	n	Feb 2018	US$ 849	ebay.com
14.		Panasonic S1 II	134 mm	102 mm	92 mm	800 g	350	Y	May 2025	US$ 3 199	amazon.com
15.		Panasonic S5 II	134 mm	102 mm	90 mm	740 g	370	Y	Jan 2023	US$ 1 999	amazon.com
16.		Sony A6100	120 mm	67 mm	59 mm	396 g	420	n	Aug 2019	US$ 749	ebay.com
17.		Sony A6400	120 mm	67 mm	50 mm	403 g	410	Y	Jan 2019	US$ 899	amazon.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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The S9 was launched at a markedly lower price (by 93 percent) than the S1, which puts it into a different 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 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Leica S1 features a medium format sensor and the Panasonic S9 a full frame sensor. The sensor area in the S9 is 35 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 0.85 and 1.0. The sensor in the S1 has a native 1:1 aspect ratio, while the one in the S9 offers a 3:2 aspect.

With 26.4MP, the S1 offers a higher resolution than the S9 (24MP), but the S1 nevertheless has larger individual pixels (pixel pitch of 7.01μm versus 5.94μm for the S9) due to its larger sensor. However, the S9 is a much more recent model (by 27 years and 8 months) than the S1, and its sensor will 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The S9 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Leica S1 Pro has a native sensitivity range from ISO 50 to ISO 1600. The corresponding ISO settings for the Panasonic Lumix DC-S9 are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.

In terms of underlying technology, the S1 is build around a CCD sensor, while the S9 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"). 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 S1	Medium Format	26.4	5140	5140	none	..	..	..	..
2.		Panasonic S9	Full Frame	24.0	6000	4000	6K/30p	25.4	14.8	3297	96
3.		Canon R8	Full Frame	24.0	6000	4000	4k/60p	24.5	14.7	3295	93
4.		Canon RP	Full Frame	26.0	6240	4160	4K/30p	24.3	11.9	2977	85
5.		Canon SL3	APS-C	24.0	6000	4000	4K/25p	23.9	13.4	1791	82
6.		Fujifilm X-S20	APS-C	26.0	6240	4160	4K/60p	24.3	14.0	2315	86
7.		Fujifilm X-T30	APS-C	26.0	6240	4160	4K/30p	24.1	13.5	1895	83
8.		Leica CL	APS-C	24.1	6014	4014	4K/30p	24.0	13.3	1788	82
9.		Leica M-E Typ 240	Full Frame	23.7	5952	3976	1080/25p	25.2	14.2	2821	94
10.		Leica Q Typ 116	Full Frame	24.0	6000	4000	1080/60p	24.3	12.7	2221	85
11.		Leica S2	Medium Format	37.5	7500	5000	none	23.9	12.5	2224	82
12.		Leica TL2	APS-C	24.1	6014	4014	4K/30p	23.9	13.3	1753	82
13.		Panasonic GX9	Four Thirds	20.2	5184	3888	4K/30p	23.1	12.8	1163	74
14.		Panasonic S1 II	Full Frame	24.0	6000	4000	6K/30p	25.4	14.8	3406	97
15.		Panasonic S5 II	Full Frame	24.0	6000	4000	6K/30p	25.4	14.6	3158	96
16.		Sony A6100	APS-C	24.0	6000	4000	4K/30p	24.1	13.6	1947	84
17.		Sony A6400	APS-C	24.0	6000	4000	4K/30p	24.0	13.6	1431	83
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. The S9 indeed provides for movie recording, while the S1 does not. The highest resolution format that the S9 can use is 6K/30p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the S1 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the S9 relies on live view and the rear LCD for framing. The adjacent table lists some of the other core features of the Leica S1 and Panasonic S9 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 S1	optical	n	none / none	none	n	..	0.01/s	n	n
2.		Panasonic S9	none	n	3.0 / 1840	swivel	Y	1/8000s	30.0/s	n	Y
3.		Canon R8	2360	n	3.0 / 1620	swivel	Y	1/4000s	6.0/s	n	n
4.		Canon RP	2360	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	n	n
5.		Canon SL3	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
6.		Fujifilm X-S20	2360	n	3.0 / 1840	swivel	Y	1/4000s	8.0/s	Y	Y
7.		Fujifilm X-T30	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	n
8.		Leica CL	2360	Y	3.0 / 1040	fixed	Y	1/8000s	10.0/s	n	n
9.		Leica M-E Typ 240	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	n	n
10.		Leica Q Typ 116	3680	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	n	Y
11.		Leica S2	optical	Y	3.0 / 460	fixed	n	1/4000s	1.5/s	n	n
12.		Leica TL2	optional	n	3.7 / 1230	fixed	Y	1/4000s	7.0/s	n	n
13.		Panasonic GX9	2760	n	3.0 / 1240	tilting	Y	1/4000s	9.0/s	Y	Y
14.		Panasonic S1 II	5760	n	3.2 / 1840	full-flex	Y	1/8000s	10.0/s	n	Y
15.		Panasonic S5 II	3680	n	3.0 / 1840	swivel	Y	1/8000s	9.0/s	n	Y
16.		Sony A6100	1440	n	3.0 / 922	tilting	Y	1/4000s	11.0/s	Y	n
17.		Sony A6400	2359	n	3.0 / 922	tilting	Y	1/4000s	11.0/s	Y	n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that differentiates the S9 and the S1 is in-body image stabilization (IBIS). The S9 reduces the risk of handshake-induced blur with all attached lenses, while the S1 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

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 S9 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 Panasonic S9 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 S1 writes its imaging data to external storage, while the S9 uses SDXC 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 Leica S1 Pro and Panasonic Lumix DC-S9 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 S1	-	- / -	-	-	-	-	-	-	-
2.		Panasonic S9	Y	stereo / mono	Y	-	micro	3.2	Y	-	Y
3.		Canon R8	Y	stereo / mono	Y	Y	micro	3.2	Y	-	Y
4.		Canon RP	Y	stereo / mono	Y	Y	micro	2.0	Y	-	Y
5.		Canon SL3	Y	stereo / mono	Y	-	mini	2.0	Y	-	Y
6.		Fujifilm X-S20	Y	stereo / mono	Y	Y	micro	3.2	Y	-	Y
7.		Fujifilm X-T30	Y	stereo / mono	Y	-	micro	3.1	Y	-	Y
8.		Leica CL	Y	stereo / mono	-	-	-	-	Y	-	-
9.		Leica M-E Typ 240	Y	mono / -	-	-	-	2.0	-	-	-
10.		Leica Q Typ 116	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
11.		Leica S2	Y	- / -	-	-	mini	2.0	-	-	-
12.		Leica TL2	Y	stereo / mono	-	-	micro	3.0	Y	-	-
13.		Panasonic GX9	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
14.		Panasonic S1 II	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
15.		Panasonic S5 II	Y	stereo / mono	Y	Y	full	3.2	Y	-	Y
16.		Sony A6100	Y	stereo / mono	Y	-	micro	2.0	Y	Y	Y
17.		Sony A6400	Y	stereo / mono	Y	-	micro	2.0	Y	Y	Y

It is notable that the S9 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the S1 does not provide wifi capability.

The S9 is a recent model that features in the current product line-up of Panasonic. In contrast, the S1 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the S1 was succeeded by the Leica S2. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Leica and Panasonic websites.

Review summary

So how do things add up? Is there a clear favorite between the Leica S1 and the Panasonic S9? Which camera is better? The listing below highlights the relative strengths of the two models.

Arguments in favor of the Leica S1 Pro:

• Easier framing: Has an optical viewfinder for image composition and settings control.
• More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
• More heavily discounted: Has been available for much longer (launched in August 1996).

Advantages of the Panasonic Lumix DC-S9:

• Broader imaging potential: Can capture not only stills but also 6K/30p video.
• Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
• Rear screen: Has a backside LCD (3.0") for image review and settings control.
• More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
• Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
• More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
• Faster burst: Shoots at higher frequency (30 vs 0.01 flaps/sec) to capture the decisive moment.
• Less disturbing: Has an electronic shutter option for completely silent shooting.
• Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
• More compact: Is smaller (126x74mm vs 339x214mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight (by 2014g or 81 percent) and is thus easier to take along.
• 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.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
• Easier wireless transfer: Supports Bluetooth for image sharing without cables.
• More affordable: Was introduced into a lower priced category (93 percent cheaper at launch).
• More modern: Reflects 27 years and 8 months of technical progress since the S1 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the S9 is the clear winner of the contest (18 : 3 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 Leica S1 and the Panasonic S9 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 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 S1 or the S9. 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	Street Price
1.		Leica S1	..	..	..	..	..	..	Aug 1996	US$ 21 499	ebay.com
2.		Panasonic S9	..	..	..	..	..	..	May 2024	US$ 1 499	amazon.com
3.		Canon R8	4.5/5	+ +	4.5/5	87/100	4/5	4.5/5	Feb 2023	US$ 1 499	amazon.com
4.		Canon RP	4/5	+	4/5	..	4.5/5	4/5	Feb 2019	US$ 1 299	amazon.com
5.		Canon SL3	4/5	o	4.5/5	79/100	4/5	4/5	Apr 2019	US$ 599	amazon.com
6.		Fujifilm X-S20	5/5	+ +	5/5	86/100	..	4.5/5	May 2023	US$ 1 299	amazon.com
7.		Fujifilm X-T30	5/5	+ +	5/5	84/100	4.5/5	4.5/5	Feb 2019	US$ 899	ebay.com
8.		Leica CL	..	..	4.2/5	..	..	4/5	Nov 2017	US$ 2 795	ebay.com
9.		Leica M-E Typ 240	..	..	..	..	..	..	Jun 2019	US$ 3 999	ebay.com
10.		Leica Q Typ 116	5/5	..	..	80/100	4.5/5	4.5/5	Jun 2015	US$ 4 249	ebay.com
11.		Leica S2	..	..	..	..	..	..	Sep 2008	US$ 22 999	ebay.com
12.		Leica TL2	3.5/5	..	3/5	..	4/5	4/5	Jul 2017	US$ 1 949	ebay.com
13.		Panasonic GX9	4/5	+	4/5	84/100	4.5/5	4.5/5	Feb 2018	US$ 849	ebay.com
14.		Panasonic S1 II	..	..	..	..	..	..	May 2025	US$ 3 199	amazon.com
15.		Panasonic S5 II	4.5/5	+ +	5/5	90/100	4.5/5	5/5	Jan 2023	US$ 1 999	amazon.com
16.		Sony A6100	..	..	4/5	82/100	4/5	5/5	Aug 2019	US$ 749	ebay.com
17.		Sony A6400	4/5	+	4/5	85/100	4.5/5	4/5	Jan 2019	US$ 899	amazon.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. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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

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