Canon G1 X Mark III vs Leica S3
The Canon PowerShot G1 X Mark III and the Leica S3 are two digital cameras that were announced, respectively, in October 2017 and September 2018. The G1X Mark III is a fixed lens compact, while the S3 is a DSLR. The cameras are based on an APS-C (G1X Mark III) and a medium format (S3) sensor. The Canon has a resolution of 24 megapixels, whereas the Leica provides 64 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.

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Going beyond this snapshot of core features and characteristics, what are the differences between the Canon PowerShot G1 X Mark III and the Leica S3? 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 Canon G1 X Mark III and the Leica S3. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. 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 Leica S3 is considerably larger (114 percent) than the Canon G1 X Mark III. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the G1X Mark III has a lens built in, whereas the S3 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 G1X Mark III gets 200 shots out of its Canon NB-13L battery, while the S3 can take .. images on a single charge of its Leica BP-PRO1 power pack.
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.

| Camera Model |
Camera Width |
Camera Height |
Camera Depth |
Camera Weight |
Battery Life |
Weather Sealing |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon G1 X Mark III | 115 mm | 78 mm | 51 mm | 399 g | 200 | Y | Oct 2017 | US$ 1 299 | ebay.com | |
| 2. | Leica S3 | 160 mm | 120 mm | 80 mm | 1260 g | .. | Y | Sep 2018 | US$ 18 999 | ebay.com | |
| 3. | Canon 6D Mark II | 144 mm | 111 mm | 75 mm | 765 g | 1200 | Y | Jun 2017 | US$ 1 999 | amazon.com | |
| 4. | Canon 80D | 139 mm | 105 mm | 79 mm | 730 g | 960 | Y | Feb 2016 | US$ 1 199 | ebay.com | |
| 5. | Canon SX540 | 120 mm | 82 mm | 92 mm | 442 g | 205 | n | Jan 2016 | US$ 399 | ebay.com | |
| 6. | Fujifilm X-T3 | 133 mm | 93 mm | 59 mm | 539 g | 390 | Y | Sep 2018 | US$ 1 499 | ebay.com | |
| 7. | Fujifilm X100F | 127 mm | 75 mm | 52 mm | 469 g | 390 | n | Jan 2017 | US$ 1 299 | ebay.com | |
| 8. | Fujifilm X100V | 128 mm | 75 mm | 53 mm | 478 g | 420 | Y | Feb 2020 | US$ 1 399 | ebay.com | |
| 9. | Leica M10 | 139 mm | 80 mm | 39 mm | 660 g | 210 | Y | Jan 2017 | US$ 6 599 | ebay.com | |
| 10. | Leica S2 | 160 mm | 120 mm | 80 mm | 1410 g | .. | Y | Sep 2008 | US$ 22 999 | ebay.com | |
| 11. | Leica S Typ 006 | 160 mm | 120 mm | 80 mm | 1260 g | .. | Y | Sep 2012 | US$ 21 949 | ebay.com | |
| 12. | Leica S-E Typ 006 | 160 mm | 120 mm | 80 mm | 1260 g | .. | Y | Sep 2014 | US$ 16 599 | ebay.com | |
| 13. | Leica S Typ 007 | 160 mm | 120 mm | 80 mm | 1260 g | .. | Y | Sep 2014 | US$ 24 499 | ebay.com | |
| 14. | Nikon D7500 | 136 mm | 104 mm | 73 mm | 720 g | 950 | Y | Apr 2017 | US$ 1 299 | amazon.com | |
| 15. | Sony A6300 | 120 mm | 67 mm | 49 mm | 404 g | 400 | Y | Feb 2016 | US$ 999 | ebay.com | |
| 16. | Sony A6500 | 120 mm | 67 mm | 53 mm | 453 g | 350 | Y | Oct 2016 | US$ 1 399 | ebay.com | |
| 17. | Sony RX10 III | 133 mm | 94 mm | 127 mm | 1051 g | 420 | Y | Mar 2016 | US$ 1 499 | ebay.com | |
| Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders. | |||||||||||
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 G1X Mark III was launched at a lower price than the S3, despite having a lens built in. 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. 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 Canon G1 X Mark III features an APS-C sensor and the Leica S3 a medium format sensor. The sensor area in the S3 is 307 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 0.8. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

With 64MP, the S3 offers a higher resolution than the G1X Mark III (24MP), but the S3 nevertheless has larger individual pixels (pixel pitch of 4.59μm versus 3.72μm for the G1X Mark III) due to its larger sensor. Moreover, the S3 is a somewhat more recent model (by 11 months) than the G1X Mark III, and its sensor might 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 S3 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Leica S3 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the S3 for good quality output (200 dots per inch) amounts to 49 x 32.7 inches or 124.5 x 83 cm, for very good quality (250 dpi) 39.2 x 26.1 inches or 99.6 x 66.4 cm, and for excellent quality (300 dpi) 32.7 x 21.8 inches or 83 x 55.3 cm. The corresponding values for the Canon G1 X Mark III are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 cm for excellent quality prints.
The G1X Mark III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Canon PowerShot G1 X Mark III has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Leica S3 are ISO 100 to ISO 50000 (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. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

| Camera Model |
Sensor Class |
Resolution (MP) |
Horiz. Pixels |
Vert. Pixels |
Video Format |
DXO Portrait |
DXO Landscape |
DXO Sports |
DXO Overall |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon G1 X Mark III | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.8 | 13.2 | 1649 | 81 | |
| 2. | Leica S3 | Medium Format | 64.0 | 9800 | 6533 | 4K/24p | 25.6 | 14.4 | 3143 | 98 | |
| 3. | Canon 6D Mark II | Full Frame | 26.0 | 6240 | 4160 | 1080/60p | 24.4 | 11.9 | 2862 | 85 | |
| 4. | Canon 80D | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.6 | 13.2 | 1135 | 79 | |
| 5. | Canon SX540 | 1/2.3 | 20.2 | 5184 | 3888 | 1080/60p | 20.3 | 11.7 | 806 | 48 | |
| 6. | Fujifilm X-T3 | APS-C | 26.0 | 6240 | 4160 | 4K/60p | 24.0 | 13.4 | 1853 | 83 | |
| 7. | Fujifilm X100F | APS-C | 24.0 | 6000 | 4000 | 1080/60p | 23.9 | 13.2 | 1704 | 81 | |
| 8. | Fujifilm X100V | APS-C | 26.0 | 6240 | 4160 | 4K/30p | 24.2 | 13.6 | 1996 | 84 | |
| 9. | Leica M10 | Full Frame | 23.8 | 5952 | 3992 | none | 24.4 | 13.2 | 2133 | 86 | |
| 10. | Leica S2 | Medium Format | 37.5 | 7500 | 5000 | none | 23.9 | 12.5 | 2224 | 82 | |
| 11. | Leica S Typ 006 | Medium Format | 37.5 | 7500 | 5000 | none | 23.9 | 12.2 | 824 | 76 | |
| 12. | Leica S-E Typ 006 | Medium Format | 37.5 | 7500 | 5000 | none | 25.1 | 13.7 | 2763 | 93 | |
| 13. | Leica S Typ 007 | Medium Format | 37.5 | 7500 | 5000 | 4K/24p | 25.1 | 13.7 | 2763 | 93 | |
| 14. | Nikon D7500 | APS-C | 20.7 | 5568 | 3712 | 4K/30p | 24.3 | 14.0 | 1483 | 86 | |
| 15. | Sony A6300 | APS-C | 24.0 | 6000 | 4000 | 4K/30p | 24.4 | 13.7 | 1437 | 85 | |
| 16. | Sony A6500 | APS-C | 24.0 | 6000 | 4000 | 4K/30p | 24.5 | 13.7 | 1405 | 85 | |
| 17. | Sony RX10 III | 1-inch | 20.0 | 5472 | 3648 | 4K/30p | 23.1 | 12.6 | 472 | 70 | |
| 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 S3 provides a better video resolution than the G1X Mark III. It can shoot movie footage at 4K/24p, while the Canon is limited to 1080/60p.
Feature comparison
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the G1X Mark III has an electronic viewfinder (2360k dots), while the S3 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The table below summarizes some of the other core capabilities of the Canon G1 X Mark III and Leica S3 in connection with corresponding information for a sample of similar cameras.

| 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. | Canon G1 X Mark III | 2360 | n | 3.0 / 1040 | swivel | Y | 1/2000s | 9.0/s | Y | Y | |
| 2. | Leica S3 | optical | Y | 3.0 / 922 | fixed | n | 1/4000s | 3.0/s | n | n | |
| 3. | Canon 6D Mark II | optical | Y | 3.0 / 1040 | swivel | Y | 1/4000s | 6.5/s | n | n | |
| 4. | Canon 80D | optical | Y | 3.0 / 1040 | swivel | Y | 1/8000s | 7.0/s | Y | n | |
| 5. | Canon SX540 | none | n | 3.0 / 461 | fixed | n | 1/2000s | 5.9/s | Y | Y | |
| 6. | Fujifilm X-T3 | 3690 | n | 3.0 / 1040 | full-flex | Y | 1/8000s | 11.0/s | n | n | |
| 7. | Fujifilm X100F | 2360 | n | 3.0 / 1040 | fixed | n | 1/4000s | 8.0/s | Y | n | |
| 8. | Fujifilm X100V | 3690 | n | 3.0 / 1620 | tilting | Y | 1/4000s | 11.0/s | n | n | |
| 9. | Leica M10 | optical | n | 3.0 / 1037 | fixed | n | 1/4000s | 5.0/s | n | n | |
| 10. | Leica S2 | optical | Y | 3.0 / 460 | fixed | n | 1/4000s | 1.5/s | n | n | |
| 11. | Leica S Typ 006 | optical | Y | 3.0 / 922 | fixed | n | 1/4000s | 1.5/s | n | n | |
| 12. | Leica S-E Typ 006 | optical | Y | 3.0 / 922 | fixed | n | 1/4000s | 1.5/s | n | n | |
| 13. | Leica S Typ 007 | optical | Y | 3.0 / 922 | fixed | n | 1/4000s | 3.5/s | n | n | |
| 14. | Nikon D7500 | optical | Y | 3.2 / 922 | tilting | Y | 1/8000s | 8.0/s | Y | n | |
| 15. | Sony A6300 | 2359 | n | 3.0 / 922 | tilting | n | 1/4000s | 11.0/s | Y | n | |
| 16. | Sony A6500 | 2359 | n | 3.0 / 922 | tilting | Y | 1/4000s | 11.0/s | Y | Y | |
| 17. | Sony RX10 III | 2359 | Y | 3.0 / 1229 | tilting | n | 1/2000s | 14.0/s | Y | Y | |
| Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one. | |||||||||||
One difference between the cameras concerns the presence of an on-board flash. The G1X Mark III has one, while the S3 does not. While the built-in flash of the G1X Mark III is not very powerful, it can at times be useful as a fill-in light.
The G1X Mark III has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the S3 does not have a selfie-screen.The Canon G1 X Mark III 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 G1X Mark III writes its imaging data to SDXC cards, while the S3 uses Compact Flash or SDXC cards. The S3 features dual card slots, which can be very useful in case a memory card fails. In contrast, the G1X Mark III only has one slot. The S3 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the G1X Mark III can use UHS-I cards (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 Canon PowerShot G1 X Mark III and Leica S3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

| Camera Model |
Hotshoe Port |
Internal Mic / Speaker |
Microphone Port |
Headphone Port |
HDMI Port |
USB Port |
WiFi Support |
NFC Support |
Bluetooth Support |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon G1 X Mark III | Y | stereo / mono | - | - | micro | 2.0 | Y | Y | Y | |
| 2. | Leica S3 | Y | stereo / mono | Y | Y | mini | 3.0 | Y | - | - | |
| 3. | Canon 6D Mark II | Y | stereo / mono | Y | - | mini | 2.0 | Y | Y | Y | |
| 4. | Canon 80D | Y | stereo / mono | Y | Y | mini | 2.0 | Y | Y | - | |
| 5. | Canon SX540 | - | stereo / mono | - | - | mini | 2.0 | Y | Y | - | |
| 6. | Fujifilm X-T3 | Y | stereo / mono | Y | Y | micro | 3.1 | Y | - | Y | |
| 7. | Fujifilm X100F | Y | stereo / mono | Y | - | micro | 2.0 | Y | - | - | |
| 8. | Fujifilm X100V | Y | stereo / mono | Y | - | micro | 3.1 | Y | - | Y | |
| 9. | Leica M10 | Y | - / - | - | - | - | - | Y | - | - | |
| 10. | Leica S2 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
| 11. | Leica S Typ 006 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
| 12. | Leica S-E Typ 006 | Y | - / - | - | - | mini | 2.0 | - | - | - | |
| 13. | Leica S Typ 007 | Y | stereo / mono | Y | Y | mini | 3.0 | Y | - | - | |
| 14. | Nikon D7500 | Y | stereo / mono | Y | Y | mini | 2.0 | Y | - | Y | |
| 15. | Sony A6300 | Y | stereo / mono | Y | - | micro | 2.0 | Y | Y | - | |
| 16. | Sony A6500 | Y | stereo / mono | Y | - | micro | 2.0 | Y | Y | - | |
| 17. | Sony RX10 III | Y | stereo / mono | Y | Y | micro | 2.0 | Y | Y | - |
It is notable that the S3 has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The G1X Mark III does not feature such a mic input.
Studio photographers will appreciate that the Leica S3 (unlike the G1X Mark III) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Travel and landscape photographers will find it useful that the S3 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
Both the G1X Mark III and the S3 have been discontinued, but can regularly be found used on ebay. Neither of the two has a direct successor, so they represent the end of the respective camera lines from Canon and Leica. Further information on the features and operation of the G1X Mark III and S3 can be found, respectively, in the Canon G1 X Mark III Manual (free pdf) or the online Leica S3 Manual.
Review summary
So how do things add up? Is there a clear favorite between the Canon G1 X Mark III and the Leica S3? Which camera is better? The listing below highlights the relative strengths of the two models.

Reasons to prefer the Canon PowerShot G1 X Mark III:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- More framing info: Has an electronic viewfinder that displays shooting data.
- More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (9 vs 3 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Ready to shoot: Comes with a built-in lens, while the S3 requires a separate lens.
- More compact: Is smaller (115x78mm vs 160x120mm) and thus needs less room in the bag.
- Less heavy: Is lighter even though it comes with a built-in lens (unlike the S3).
- Sharper images: Has hand-shake reducing image stabilization built-in.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More heavily discounted: Has been on the market for longer (launched in October 2017).

Advantages of the Leica S3:
- More detail: Has more megapixels (64 vs 24MP), which boosts linear resolution by 63%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- 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 video: Provides higher definition movie capture (4K/24p vs 1080/60p).
- 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.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier setting verification: Features a control panel on top to check shooting parameters.
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- More flexible: Makes it possible to change lenses and thus to use specialty optics.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
- More prestigious: Has the Leica luxury appeal, which ensures a high resale value.
- More modern: Was introduced somewhat (11 months) more recently.
If the number of relative strengths (bullet points above) is taken as a guide, the S3 emerges as the winner of the match-up (20 : 18 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 Canon G1 X Mark III and the Leica S3 place the cameras among the top in their class? Find out in the latest Best Travel-Zoom Camera and Best DSLR Camera listings 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 incomplete and does no justice, for example, to the way the G1X Mark III or the S3 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 where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

| Camera Model |
AP score |
CL score |
DCW score |
DPR score |
EPZ score |
PB score |
Camera Launch |
Launch Price |
Street Price |
||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. | Canon G1 X Mark III | 5/5 | + | 4/5 | 79/100 | 4.5/5 | 4.5/5 | Oct 2017 | US$ 1 299 | ebay.com | |
| 2. | Leica S3 | .. | .. | .. | .. | .. | .. | Sep 2018 | US$ 18 999 | ebay.com | |
| 3. | Canon 6D Mark II | 4/5 | + | 4/5 | 80/100 | 4.5/5 | 4/5 | Jun 2017 | US$ 1 999 | amazon.com | |
| 4. | Canon 80D | 4/5 | + + | 4.5/5 | 84/100 | 4.5/5 | 4.5/5 | Feb 2016 | US$ 1 199 | ebay.com | |
| 5. | Canon SX540 | .. | .. | .. | .. | .. | .. | Jan 2016 | US$ 399 | ebay.com | |
| 6. | Fujifilm X-T3 | 5/5 | + + | 4.5/5 | 88/100 | 5/5 | 5/5 | Sep 2018 | US$ 1 499 | ebay.com | |
| 7. | Fujifilm X100F | 5/5 | + | 3.9/5 | 83/100 | 4.5/5 | 4.5/5 | Jan 2017 | US$ 1 299 | ebay.com | |
| 8. | Fujifilm X100V | 5/5 | + + | 4.5/5 | 86/100 | 5/5 | 4.5/5 | Feb 2020 | US$ 1 399 | ebay.com | |
| 9. | Leica M10 | 4.5/5 | .. | .. | .. | 4/5 | 4.5/5 | Jan 2017 | US$ 6 599 | ebay.com | |
| 10. | Leica S2 | .. | .. | .. | .. | .. | .. | Sep 2008 | US$ 22 999 | ebay.com | |
| 11. | Leica S Typ 006 | .. | .. | .. | .. | .. | .. | Sep 2012 | US$ 21 949 | ebay.com | |
| 12. | Leica S-E Typ 006 | .. | .. | .. | .. | .. | .. | Sep 2014 | US$ 16 599 | ebay.com | |
| 13. | Leica S Typ 007 | 4/5 | .. | .. | .. | .. | .. | Sep 2014 | US$ 24 499 | ebay.com | |
| 14. | Nikon D7500 | 4.5/5 | + + | 4.5/5 | 86/100 | 5/5 | 4.5/5 | Apr 2017 | US$ 1 299 | amazon.com | |
| 15. | Sony A6300 | 4.5/5 | + | .. | 85/100 | 5/5 | 5/5 | Feb 2016 | US$ 999 | ebay.com | |
| 16. | Sony A6500 | 5/5 | + + | 3.5/5 | 85/100 | 4.5/5 | 4.5/5 | Oct 2016 | US$ 1 399 | ebay.com | |
| 17. | Sony RX10 III | 5/5 | + | .. | 84/100 | 4.5/5 | 4.5/5 | Mar 2016 | US$ 1 499 | ebay.com | |
| Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available. | |||||||||||
The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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
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.
- Canon 400D vs Canon G1 X Mark III
- Canon 850D vs Canon G1 X Mark III
- Canon G1 X Mark III vs Canon XSi
- Canon G1 X Mark III vs Fujifilm X-E4
- Canon G1 X Mark III vs Leica M8
- Canon G1 X Mark III vs Nikon D500
- Leica S3 vs Nikon D3
- Leica S3 vs Nikon D7100
- Leica S3 vs Nikon Z5
- Leica S3 vs Nikon Zf
- Leica S3 vs Panasonic LX5
- Leica S3 vs Ricoh WG-60
Specifications: Canon G1 X Mark III vs Leica S3
Below is a side-by-side comparison of the specs of the two cameras to facilitate a quick review of their differences and common features.
| Camera Model | Canon G1 X Mark III | Leica S3 |
|---|---|---|
| Camera Type | Fixed lens compact camera | Digital single lens reflex |
| Camera Lens | 24-72mm f/2.8-5.6 | Leica S mount lenses |
| Launch Date | October 2017 | September 2018 |
| Launch Price | USD 1,299 | USD 18,999 |
| Sensor Specs | Canon G1 X Mark III | Leica S3 |
| Sensor Technology | CMOS | CMOS |
| Sensor Format | APS-C Sensor | Medium Format Sensor |
| Sensor Size | 22.3 x 14.9 mm | 45.0 x 30.0 mm |
| Sensor Area | 332.27 mm2 | 1350 mm2 |
| Sensor Diagonal | 26.8 mm | 54.1 mm |
| Crop Factor | 1.5x | 0.8x |
| Sensor Resolution | 24 Megapixels | 64 Megapixels |
| Image Resolution | 6000 x 4000 pixels | 9800 x 6533 pixels |
| Pixel Pitch | 3.72 μm | 4.59 μm |
| Pixel Density | 7.22 MP/cm2 | 4.74 MP/cm2 |
| Moiré control | Anti-Alias filter | no AA filter |
| Movie Capability | 1080/60p Video | 4K/24p Video |
| ISO Setting | 100 - 25,600 ISO | 100 - 50,000 ISO |
| Image Processor | DIGIC 7 | Maestro II |
| Screen Specs | Canon G1 X Mark III | Leica S3 |
| Viewfinder Type | Electronic viewfinder | Optical viewfinder |
| Viewfinder Field of View | 100% | 98% |
| Viewfinder Magnification | 0.87x | |
| Viewfinder Resolution | 2360k dots | |
| Top-Level Screen | no Top Display | Control Panel |
| LCD Framing | Live View | Live View |
| Rear LCD Size | 3.0inch | 3.0inch |
| LCD Resolution | 1040k dots | 922k dots |
| LCD Attachment | Swivel screen | Fixed screen |
| Touch Input | Touchscreen | no Touchscreen |
| Shooting Specs | Canon G1 X Mark III | Leica S3 |
| Focus System | On-Sensor Phase-detect | Phase-detect AF |
| Manual Focusing Aid | Focus Peaking | Focus Peaking |
| Max Shutter Speed (mechanical) | 1/2000s | 1/4000s |
| Continuous Shooting | 9 shutter flaps/s | 3 shutter flaps/s |
| Time-Lapse Photography | Intervalometer built-in | no Intervalometer |
| Fill Flash | Built-in Flash | no On-Board Flash |
| Storage Medium | SDXC cards | CF or SDXC cards |
| Single or Dual Card Slots | Single card slot | Dual card slots |
| UHS card support | UHS-I | UHS-II |
| Connectivity Specs | Canon G1 X Mark III | Leica S3 |
| External Flash | Hotshoe | Hotshoe |
| Studio Flash | no PC Sync | PC Sync socket |
| USB Connector | USB 2.0 | USB 3.0 |
| HDMI Port | micro HDMI | mini HDMI |
| Microphone Port | no MIC socket | External MIC port |
| Headphone Socket | no Headphone port | Headphone port |
| Wifi Support | Wifi built-in | Wifi built-in |
| Near-Field Communication | NFC built-in | no NFC |
| Bluetooth Support | Bluetooth built-in | no Bluetooth |
| Geotagging | no internal GPS | GPS built-in |
| Body Specs | Canon G1 X Mark III | Leica S3 |
| Environmental Sealing | Weathersealed body | Weathersealed body |
| Battery Type | Canon NB-13L | Leica BP-PRO1 |
| Body Dimensions |
115 x 78 x 51 mm (4.5 x 3.1 x 2.0 in) |
160 x 120 x 80 mm (6.3 x 4.7 x 3.1 in) |
| Camera Weight | 399 g (14.1 oz) | 1260 g (44.4 oz) |

Check G1X Mark III offers at
ebay.com

Check S3 offers at
ebay.com
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