Leica M9 vs Sony RX100 IV
The Leica M9 and the Sony Cyber-shot DSC-RX100 IV are two digital cameras that were officially introduced, respectively, in September 2009 and June 2015. The M9 is a rangefinder-style mirrorless camera, while the RX100 IV is a fixed lens compact. The cameras are based on a full frame (M9) and an one-inch (RX100 IV) sensor. The Leica has a resolution of 18.1 megapixels, whereas the Sony provides 20 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
Going beyond this snapshot of core features and characteristics, what are the differences between the Leica M9 and the Sony Cyber-shot DSC-RX100 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.
An illustration of the physical size and weight of the Leica M9 and the Sony RX100 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 M9 can be obtained in two different colors (black, silver), while the RX100 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 RX100 IV is considerably smaller (47 percent) than the Leica M9. In this context, it is worth noting that neither the M9 nor the RX100 IV are weather-sealed.
The above size and weight comparisons are to some extent incomplete and possibly misleading, as the RX100 IV has a lens built in, whereas the M9 is an interchangeable lens camera that requires a separate lens. Attaching the latter will add extra weight and bulk to the setup. You can compare the optics available for the M9 and their specifications in the Leica M Lens Catalog.
The power pack in the RX100 IV can be charged via the USB port, which can be very convenient when travelling.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|Leica M9||5.5 in||3.1 in||1.5 in||20.6 oz||..||n||Sep 2009||7,999|
|Sony RX100 IV||4.0 in||2.3 in||1.6 in||10.5 oz||280||n||Jun 2015||999|
|Canon G7 X||4.1 in||2.4 in||1.6 in||10.7 oz||210||n||Sep 2014||699|
|Canon T5i||5.2 in||3.9 in||3.1 in||20.5 oz||440||n||Mar 2013||649|
|Canon T2i||5.1 in||3.9 in||2.4 in||18.7 oz||440||n||Feb 2010||699|
|Canon T1i||5.1 in||3.9 in||2.4 in||18.3 oz||400||n||Mar 2009||799|
|Leica M10-R||5.5 in||3.1 in||1.5 in||23.3 oz||210||Y||Jul 2020||8,295|
|Leica M10-P||5.5 in||3.1 in||1.5 in||23.3 oz||210||Y||Aug 2018||7,995|
|Leica M10||5.5 in||3.1 in||1.5 in||23.3 oz||210||Y||Jan 2017||6,595|
|Leica X Typ 113||5.2 in||2.9 in||3.1 in||17.1 oz||350||n||Sep 2014||2,295|
|Leica X Vario||5.2 in||2.9 in||3.7 in||24.0 oz||450||n||Jun 2013||2,850|
|Leica M Typ 240||5.5 in||3.1 in||1.7 in||24.0 oz||..||Y||Sep 2012||6,950|
|Leica M8||5.5 in||3.1 in||1.5 in||20.8 oz||..||n||Sep 2006||5,499|
|Panasonic FZ1000||5.4 in||3.9 in||5.2 in||29.3 oz||360||n||Jun 2014||899|
|Sony RX100 VII||4.0 in||2.3 in||1.7 in||10.7 oz||260||n||Jul 2019||1,199|
|Sony RX100 V||4.0 in||2.3 in||1.6 in||10.5 oz||220||n||Oct 2016||999|
|Sony RX100 III||4.0 in||2.3 in||1.6 in||10.2 oz||320||n||May 2014||799|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
The price is, of course, an important factor in any camera decision. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The RX100 IV was launched at a lower price than the M9, despite having a lens built in. 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.
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 Leica M9 features a full frame sensor and the Sony RX100 IV an one-inch sensor. The sensor area in the RX100 IV is 87 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.7. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a smaller sensor, the RX100 IV offers a higher resolution of 20 megapixels, compared with 18.1 MP of the M9. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 2.41μm versus 6.91μm for the M9). However, it should be noted that the RX100 IV is much more recent (by 5 years and 9 months) than the M9, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the M9 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony RX100 IV implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the RX100 IV for good quality output (200 dots per inch) amounts to 27.4 x 18.2 inches or 69.5 x 46.3 cm, for very good quality (250 dpi) 21.9 x 14.6 inches or 55.6 x 37.1 cm, and for excellent quality (300 dpi) 18.2 x 12.2 inches or 46.3 x 30.9 cm. The corresponding values for the Leica M9 are 26.1 x 17.4 inches or 66.2 x 44.1 cm for good quality, 20.8 x 13.9 inches or 53 x 35.3 cm for very good quality, and 17.4 x 11.6 inches or 44.1 x 29.4 cm for excellent quality prints.
The Leica M9 has a native sensitivity range from ISO 80 to ISO 2500. The corresponding ISO settings for the Sony Cyber-shot DSC-RX100 IV are ISO 125 to ISO 12800, with the possibility to increase the ISO range to 80-25600.
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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.
|Leica M9||Full Frame||18.1||5212||3472||none||22.5||11.7||884||69|
|Sony RX100 IV||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70|
|Canon G7 X||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|Leica M10-R||Full Frame||40.9||7864||5200||none||..||..||..||..|
|Leica M10-P||Full Frame||23.8||5952||3992||none||..||..||..||..|
|Leica M10||Full Frame||23.8||5952||3992||none||24.4||13.2||2133||86|
|Leica X Typ 113||APS-C||16.1||4928||3264||1080/30p||..||..||..||..|
|Leica X Vario||APS-C||16.1||4928||3272||1080/30p||23.4||12.7||1320||78|
|Leica M Typ 240||Full Frame||23.7||5952||3976||1080/25p||24.0||13.3||1860||84|
|Sony RX100 VII||1-inch||20.0||5472||3648||4K/30p||21.8||12.4||418||63|
|Sony RX100 V||1-inch||20.0||5472||3648||4K/30p||22.8||12.4||586||70|
|Sony RX100 III||1-inch||20.0||5472||3648||1080/60p||22.4||12.3||495||67|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The RX100 IV indeed provides for movie recording, while the M9 does not. The highest resolution format that the RX100 IV can use is 4K/30p.
Beyond body and sensor, cameras can and do differ across a range of features. For example, the RX100 IV has an electronic viewfinder (2359k dots), while the M9 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 viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the M9 has a higher magnification than the one of the RX100 IV (0.68x vs 0.22x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Leica M9 and Sony RX100 IV along with similar information for a selection of comparators.
|Sony RX100 IV||2359||n||3.0||1228||tilting||n||1/2000s||16.0||Y||Y|
|Canon G7 X||none||n||3.0||1040||tilting||Y||1/2000s||6.5||Y||Y|
|Leica X Typ 113||optional||n||3.0||920||fixed||n||1/2000s||5.0||Y||n|
|Leica X Vario||optional||n||3.0||920||fixed||n||1/2000s||5.0||Y||n|
|Leica M Typ 240||optical||n||3.0||920||fixed||n||1/4000s||3.0||n||n|
|Sony RX100 VII||2359||n||3.0||921||tilting||Y||1/2000s||90.0||Y||Y|
|Sony RX100 V||2359||n||3.0||1229||tilting||n||1/2000s||24.0||Y||Y|
|Sony RX100 III||1440||n||3.0||1229||tilting||n||1/2000s||10.0||Y||Y|
One difference between the cameras concerns the presence of an on-board flash. The RX100 IV has one, while the M9 does not. While the built-in flash of the RX100 IV is not very powerful, it can at times be useful as a fill-in light.The RX100 IV has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the M9 does not have a selfie-screen.
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 RX100 IV 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 M9 writes its imaging data to SDXC cards, while the RX100 IV uses SDXC or Memory Stick PRO Duo cards. The RX100 IV supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the M9 cannot take advantage of Ultra High Speed SD cards.
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 M9 and Sony Cyber-shot DSC-RX100 IV and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
|Sony RX100 IV||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Canon G7 X||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Leica X Typ 113||Y||stereo||mono||-||-||mini||2.0||-||-||-|
|Leica X Vario||Y||stereo||mono||-||-||mini||2.0||-||-||-|
|Leica M Typ 240||Y||stereo||mono||-||-||-||2.0||-||-||-|
|Sony RX100 VII||-||stereo||mono||Y||-||micro||2.0||Y||Y||Y|
|Sony RX100 V||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
|Sony RX100 III||-||stereo||mono||-||-||micro||2.0||Y||Y||-|
It is notable that the M9 has a hotshoe, while the RX100 IV does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.
Both the M9 and the RX100 IV have been discontinued, but can regularly be found used on eBay. The M9 was replaced by the Leica M Typ 240, while the RX100 IV was followed by the Sony RX100 IV. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Leica and Sony websites.
So what is the bottom line? Is the Leica M9 better than the Sony RX100 IV or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Leica M9:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better low-light sensitivity: Requires less light for good images (0.6 stops ISO advantage).
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.68x vs 0.22x).
- Faster shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
- More flexible: Accepts interchangeable lenses, so that lens characteristics can be altered.
- Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
- More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
- More heavily discounted: Has been available for much longer (launched in September 2009).
Arguments in favor of the Sony Cyber-shot DSC-RX100 IV:
- More detail: Has more megapixels (20 vs 18.1MP), which boosts linear resolution by 5%.
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- More dynamic range: Captures a broader range of light and dark details (0.9 EV of extra DR).
- Broader imaging potential: Can capture not only stills but also 4K/30p video.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1228k vs 230k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (16 vs 2 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Ready to shoot: Has an integrated lens, whereas the M9 necessitates an extra lens.
- More compact: Is smaller (102x58mm vs 139x80mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight even though it has a lens built in (unlike the M9).
- 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.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More affordable: Was introduced at a lower price, despite coming with a built-in lens.
- More modern: Reflects 5 years and 9 months of technical progress since the M9 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the RX100 IV is the clear winner of the contest (22 : 9 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.
In any case, while the specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it says little about, for example, the shooting experience and imaging performance of the M9 and the RX100 IV in practical situations. 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.
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 (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Leica M9||..||..||4.5/5||4.5/5||..||Sep 2009||7,999|
|Sony RX100 IV||+ +||85/100||4/5||4.5/5||4.5/5||Jun 2015||999|
|Canon G7 X||+ +||77/100||4.5/5||3.5/5||4.5/5||Sep 2014||699|
|Canon T5i||..||76/100||4.5/5||4.5/5||4.5/5||Mar 2013||649|
|Canon T2i||+ +||77/100||4/5||5/5||4.5/5||Feb 2010||699|
|Canon T1i||+ +||74/100||4.5/5||5/5||4.5/5||Mar 2009||799|
|Leica M10-R||..||..||..||..||4/5||Jul 2020||8,295|
|Leica M10-P||..||..||..||..||4/5||Aug 2018||7,995|
|Leica M10||..||..||4/5||..||4.5/5||Jan 2017||6,595|
|Leica X Typ 113||..||..||3.5/5||..||4/5||Sep 2014||2,295|
|Leica X Vario||..||..||4/5||4/5||4/5||Jun 2013||2,850|
|Leica M Typ 240||..||..||4/5||..||..||Sep 2012||6,950|
|Leica M8||..||+ +||..||..||..||Sep 2006||5,499|
|Panasonic FZ1000||+ +||82/100||4.5/5||4.5/5||4.5/5||Jun 2014||899|
|Sony RX100 VII||..||..||4/5||..||5/5||Jul 2019||1,199|
|Sony RX100 V||+ +||83/100||4/5||5/5||4.5/5||Oct 2016||999|
|Sony RX100 III||+ +||82/100||4.5/5||4.5/5||5/5||May 2014||799|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. A score, therefore, has to be seen in close connection to the price and market introduction time 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.
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 100D vs Leica M9
- Canon 1D vs Leica M9
- Fujifilm X-H1 vs Leica M9
- Fujifilm XP120 vs Sony RX100 IV
- Leica M9 vs Nikon 1 J5
- Leica M9 vs Olympus E-P3
- Leica M9 vs Panasonic FZ1000
- Leica V-LUX 4 vs Sony RX100 IV
- Nikon 1 J5 vs Sony RX100 IV
- Nikon D800 vs Sony RX100 IV
- Olympus E-3 vs Sony RX100 IV
- Olympus E-P1 vs Sony RX100 IV
Specifications: Leica M9 vs Sony RX100 IV
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||Leica M9||Sony RX100 IV|
|Camera Type||Rangefinder camera||Fixed lens compact camera|
|Camera Lens||Leica M mount lenses||24-70mm f/1.8-2.8|
|Launch Date||September 2009||June 2015|
|Launch Price||USD 7,999||USD 999|
|Sensor Specs||Leica M9||Sony RX100 IV|
|Sensor Format||Full Frame Sensor||1" Sensor|
|Sensor Size||36.0 x 24.0 mm||13.2 x 8.8 mm|
|Sensor Area||864 mm2||116.16 mm2|
|Sensor Diagonal||43.3 mm||15.9 mm|
|Sensor Resolution||18.1 Megapixels||20 Megapixels|
|Image Resolution||5212 x 3472 pixels||5472 x 3648 pixels|
|Pixel Pitch||6.91 μm||2.41 μm|
|Pixel Density||2.09 MP/cm2||17.18 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||no Video||4K/30p Video|
|ISO Setting||80 - 2,500 ISO||125 - 12,800 ISO|
|ISO Boost||no Enhancement||80 - 25,600 ISO|
|DXO Sensor Quality (score)||69||70|
|DXO Color Depth (bits)||22.5||22.8|
|DXO Dynamic Range (EV)||11.7||12.6|
|DXO Low Light (ISO)||884||591|
|Screen Specs||Leica M9||Sony RX100 IV|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2359k dots|
|LCD Framing||Live View|
|Rear LCD Size||2.5inch||3.0inch|
|LCD Resolution||230k dots||1228k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Leica M9||Sony RX100 IV|
|Focus System||Manual Focus||Contrast-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/2000s|
|Continuous Shooting||2 shutter flaps/s||16 shutter flaps/s|
|Electronic Shutter||no E-Shutter||up to 1/32000s|
|Fill Flash||no On-Board Flash||Build-in Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Leica M9||Sony RX100 IV|
|External Flash||Hotshoe||no Hotshoe|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||micro HDMI|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Leica M9||Sony RX100 IV|
|In-Camera Charging||no USB charging||USB charging|
139 x 80 x 37 mm
(5.5 x 3.1 x 1.5 in)
102 x 58 x 41 mm
(4.0 x 2.3 x 1.6 in)
|Camera Weight||585 g (20.6 oz)||298 g (10.5 oz)|
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