Leica M9 versus Sony A7R III
The Leica M9 and the Sony Alpha A7R III are two enthusiast cameras that were officially introduced, respectively, in September 2009 and October 2017. The M9 is a fixed lens compact, while the A7R III is a rangefinder-style mirrorless. Both cameras are equipped with a full frame sensor. The Leica has a resolution of 18.1 megapixel, whereas the Sony provides 42.2 MP.
An illustration of the physical size and weight of the Leica M9 and the Sony A7R III is provided in the side-by-side display below. Three consecutive views from the front, the top, and the rear side are shown. All size dimensions are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the M9 – represents 100 percent across all the size and weight measures).
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7R III is notably larger (10 percent) than the Leica M9. Moreover, the A7R III is markedly heavier (11 percent) than the M9. It is noteworthy in this context that the A7R III is splash and dust-proof, while the M9 does not feature any corresponding weather-sealing.
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. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can find an overview of optics for the two cameras in the Leica M Lens Catalog (M9) and the Sony FE Lens Catalog (A7R III).
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 comparisons there.
|Camera Body Specifications
|Leica M9 (⇒ rgt)||139 mm||80 mm||37 mm||585 g||..||no||2009||7,999||discont.||check|
|Sony A7R III (⇒ lft)||127 mm||96 mm||74 mm||650 g||650||YES||2017||3,199||latest||check|
|Canon G9 X Mark II (⇒ lft | rgt)||98 mm||58 mm||31 mm||206 g||235||no||2017||529||latest||check|
|Canon G9 X (⇒ lft | rgt)||98 mm||58 mm||31 mm||209 g||220||no||2015||529||discont.||check|
|Canon M10 (⇒ lft | rgt)||108 mm||67 mm||35 mm||301 g||255||no||2015||499||discont.||check|
|Canon G7 X (⇒ lft | rgt)||103 mm||60 mm||40 mm||304 g||210||no||2014||699||discont.||check|
|Leica M10 (⇒ lft | rgt)||139 mm||80 mm||39 mm||660 g||210||no||2017||6,595||latest||check|
|Leica M Typ 240 (⇒ lft | rgt)||139 mm||80 mm||42 mm||680 g||..||YES||2012||6,950||discont.||check|
|Leica M8 (⇒ lft | rgt)||139 mm||80 mm||37 mm||591 g||..||no||2006||5,499||discont.||check|
|Nikon D850 (⇒ lft | rgt)||146 mm||124 mm||79 mm||1005 g||1840||YES||2017||3,299||latest||check|
|Panasonic FZ1000 (⇒ lft | rgt)||137 mm||99 mm||131 mm||831 g||360||no||2014||899||discont.||check|
|Panasonic GH2 (⇒ lft | rgt)||124 mm||90 mm||76 mm||442 g||330||no||2010||1,499||discont.||check|
|Sony A9 (⇒ lft | rgt)||127 mm||96 mm||63 mm||673 g||650||YES||2017||4,499||latest||check|
|Sony A99 II (⇒ lft | rgt)||143 mm||104 mm||76 mm||849 g||490||YES||2016||3,199||latest||check|
|Sony A7R II (⇒ lft | rgt)||127 mm||96 mm||60 mm||625 g||290||YES||2015||3,199||discont.||check|
|Sony A7S II (⇒ lft | rgt)||127 mm||96 mm||60 mm||627 g||370||YES||2015||2,999||latest||check|
|Sony RX100 IV (⇒ lft | rgt)||102 mm||58 mm||41 mm||298 g||280||no||2015||999||discont.||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A7R III was launched at a markedly lower price (by 60 percent) than the M9, 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tent to lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a slightly smaller sensor, the A7R III offers a higher resolution of 42.2 megapixel, compared with 18.1 MP of the M9. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.52μm versus 6.91μm for the M9). However, it should be noted that the A7R III is much more recent (by 8 years and 1 month) 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 neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.
Unlike the M9, the A7R III has the capacity to capture high quality composite images 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).
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|Leica M9 (⇒ rgt)||Full Frame||18.1||5212||3472||no||22.5||11.7||884||69|
|Sony A7R III (⇒ lft)||Full Frame||42.2||7952||5304||4K/30p||..||..||..||..|
|Canon G9 X Mark II (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||21.9||12.5||522||65|
|Canon G9 X (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||21.5||12.3||495||63|
|Canon M10 (⇒ lft | rgt)||APS-C||17.9||5184||3456||1080/30p||22.2||11.4||753||65|
|Canon G7 X (⇒ lft | rgt)||1-inch||20.0||5472||3648||1080/60p||23.0||12.7||556||71|
|Leica M10 (⇒ lft | rgt)||Full Frame||23.8||5952||3992||no||..||..||..||..|
|Leica M Typ 240 (⇒ lft | rgt)||Full Frame||23.7||5952||3976||1080/25p||24.0||13.3||1860||84|
|Leica M8 (⇒ lft | rgt)||APS-H||10.4||3936||2630||no||21.1||11.3||663||59|
|Nikon D850 (⇒ lft | rgt)||Full Frame||45.4||8256||5504||4K/30p||26.4||14.8||2660||100|
|Panasonic FZ1000 (⇒ lft | rgt)||1-inch||20.0||5472||3648||4K/30p||22.1||11.7||517||64|
|Panasonic GH2 (⇒ lft | rgt)||Four Thirds||15.9||4608||3456||1080/60i||21.2||11.3||655||60|
|Sony A9 (⇒ lft | rgt)||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|Sony A99 II (⇒ lft | rgt)||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|Sony A7R II (⇒ lft | rgt)||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98|
|Sony A7S II (⇒ lft | rgt)||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85|
|Sony RX100 IV (⇒ lft | rgt)||1-inch||20.0||5472||3648||4K/30p||22.8||12.6||591||70|
Many modern cameras cannot only take still pictures, but also record videos. The A7R III indeed provides for movie recording, while the M9 does not. The highest resolution format that the A7R III can use is 4K/30p.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7R III has an electronic viewfinder (3686k 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 adjacent table lists some of the other core features of the Leica M9 and Sony A7R III along with similar information for a selection of comparators. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.
|Leica M9 (⇒ rgt)||optical||no||2.5||230||fixed||no||4000||2.0||no||no|
|Sony A7R III (⇒ lft)||3686||no||3.0||1440||tilting||YES||8000||10.0||no||YES|
|Canon G9 X Mark II (⇒ lft | rgt)||no||no||3.0||1040||fixed||YES||2000||8.2||6||no|
|Canon G9 X (⇒ lft | rgt)||no||no||3.0||1040||fixed||YES||2000||6.0||6||no|
|Canon M10 (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||4000||4.6||5||no|
|Canon G7 X (⇒ lft | rgt)||no||no||3.0||1040||tilting||YES||2000||6.5||7||no|
|Leica M10 (⇒ lft | rgt)||optical||no||3.0||1037||fixed||no||4000||5.0||no||no|
|Leica M Typ 240 (⇒ lft | rgt)||optical||no||3.0||920||fixed||no||4000||3.0||no||no|
|Leica M8 (⇒ lft | rgt)||optical||no||2.5||230||fixed||no||8000||2.0||no||no|
|Nikon D850 (⇒ lft | rgt)||optical||YES||3.2||2359||tilting||YES||8000||9.0||no||no|
|Panasonic FZ1000 (⇒ lft | rgt)||2359||no||3.0||921||swivel||no||4000||12.0||13.5||no|
|Panasonic GH2 (⇒ lft | rgt)||1534||no||3.0||460||swivel||no||4000||3.0||15.6||no|
|Sony A9 (⇒ lft | rgt)||3686||no||3.0||1440||tilting||YES||8000||20.0||no||YES|
|Sony A99 II (⇒ lft | rgt)||2400||YES||3.0||1229||tilting||no||8000||12.0||no||YES|
|Sony A7R II (⇒ lft | rgt)||2400||no||3.0||1229||tilting||no||8000||5.0||no||YES|
|Sony A7S II (⇒ lft | rgt)||2400||no||3.0||1229||tilting||no||8000||5.0||no||YES|
|Sony RX100 IV (⇒ lft | rgt)||2359||no||3.0||1228||tilting||no||2000||16.0||10.2||no|
The A7R III is a current model that online retailers, such as amazon, will have in stock. In contrast, the M9 has been discontinued (but it can be found pre-owned on ebay). As a replacement in the same line of cameras, the M9 was succeeded by the Leica M Typ 240.
So what is the bottom line? Which of the two cameras – the Leica M9 or the Sony A7R III – has the upper hand? The listing below highlights the relative strengths of the two models.
Advantages of the Leica M9:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Less heavy: Is lighter (by 65g or 10 percent) and hence easier to carry around.
- 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 Alpha A7R III:
- More detail: Has more megapixels (42.2 vs 18.1MP), which boosts linear resolution by 53%.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- 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 (1440k vs 230k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster shutter: Has a higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 2 flaps/sec) to capture the decisive moment.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
- More affordable: Was introduced into a lower priced category (60 percent cheaper at launch).
- More modern: Reflects 8 years and 1 month of technical progress since the M9 launch.
If the number of relative strengths (bullet points above) is taken as a guide, the A7R III is the clear winner of the contest (14 : 4 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.
In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains incomplete and does no justice, for example, to the way the M9 or the A7R III handle or perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is why hands-on reviews by experts are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites. The detailed reviews can be accessed, respectively, on the websites of cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Leica M9 (⇒ rgt)||-||-||4.5/5||4.5/5||-||2009||7,999||discont.||check|
|Sony A7R III (⇒ lft)||..||90/100 Gold||..||..||..||2017||3,199||latest||check|
|Canon G9 X Mark II (⇒ lft | rgt)||..||..||4.5/5||4.5/5||4.5/5||2017||529||latest||check|
|Canon G9 X (⇒ lft | rgt)||HiRec||-||4.5/5||4/5||4.5/5||2015||529||discont.||check|
|Canon M10 (⇒ lft | rgt)||-||-||-||reviewed||4/5||2015||499||discont.||check|
|Canon G7 X (⇒ lft | rgt)||HiRec||77/100 Silver||4.5/5||3.5/5||4.5/5||2014||699||discont.||check|
|Leica M10 (⇒ lft | rgt)||-||-||4/5||-||4.5/5||2017||6,595||latest||check|
|Leica M Typ 240 (⇒ lft | rgt)||-||-||4/5||-||-||2012||6,950||discont.||check|
|Leica M8 (⇒ lft | rgt)||-||HiRec||-||-||-||2006||5,499||discont.||check|
|Nikon D850 (⇒ lft | rgt)||HiRec||89/100 Gold||4.5/5||..||5/5||2017||3,299||latest||check|
|Panasonic FZ1000 (⇒ lft | rgt)||HiRec||82/100 Gold||4.5/5||4.5/5||4.5/5||2014||899||discont.||check|
|Panasonic GH2 (⇒ lft | rgt)||86/100 HiRec||79/100 Silver||4.5/5||4.5/5||5/5||2010||1,499||discont.||check|
|Sony A9 (⇒ lft | rgt)||..||89/100 Gold||5/5||5/5||5/5||2017||4,499||latest||check|
|Sony A99 II (⇒ lft | rgt)||-||85/100 Silver||4.5/5||4.5/5||4.5/5||2016||3,199||latest||check|
|Sony A7R II (⇒ lft | rgt)||HiRec||90/100 Gold||5/5||4.5/5||5/5||2015||3,199||discont.||check|
|Sony A7S II (⇒ lft | rgt)||Rec||-||4.5/5||5/5||5/5||2015||2,999||latest||check|
|Sony RX100 IV (⇒ lft | rgt)||HiRec||85/100 Gold||4/5||4.5/5||4.5/5||2015||999||discont.||check|
The above review scores should be interpreted with care, 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. Also, please note that some of the review sites have changed their methodology and reporting over time.
In case you are interested in seeing how other cameras pair up, just use the search menu below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If the camera you are interested in is not available, kindly get in touch, and I will try to locate and add the respective data to the application.
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