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Leica M10-R vs Olympus E-M1 III

The Leica M10-R and the Olympus OM-D E-M1 Mark III are two enthusiast cameras that were revealed to the public, respectively, in July 2020 and February 2020. The M10-R is a rangefinder-focusing mirrorless, while the E-M1 III is a mirrorless interchangeable lens camera. The cameras are based on a full frame (M10-R) and a Four Thirds (E-M1 III) sensor. The Leica has a resolution of 40.9 megapixels, whereas the Olympus provides 20.2 MP.

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

Headline Specifications
Leica M10-R
versus
Olympus E-M1 III
Leica M10-R   Olympus E-M1 III
Rangefinder camera Mirrorless system camera
Leica M mount lenses Micro Four Thirds lenses
40.9 MP – Full Frame sensor 20.2 MP – Four Thirds sensor
no Video 4K/30p Video
ISO 100-50,000 ISO 200-25,600
Optical viewfinder Electronic viewfinder (2360k dots)
3.0" LCD – 1037k dots 3.0" LCD – 1037k dots
Fixed touchscreen Swivel touchscreen
4.5 shutter flaps per second 18 shutter flaps per second
no shake reductionIn-body stabilization
Weathersealed bodyWeathersealed body
210 shots per battery charge420 shots per battery charge
139 x 80 x 39 mm, 660 g 134 x 91 x 69 mm, 580 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Leica M10-R and the Olympus OM-D E-M1 Mark III? 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.

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Body comparison

An illustration of the physical size and weight of the Leica M10-R and the Olympus E-M1 III is provided 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.

The M10-R can be obtained in two different colors (black, silver), while the E-M1 III is only available in black.

Size Leica M10-R vs Olympus E-M1 III
Compare M10-R versus E-M1 III top
Comparison M10-R or E-M1 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Olympus E-M1 III is notably larger (10 percent) than the Leica M10-R. However, the E-M1 III is markedly lighter (12 percent) than the M10-R. 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 since they do not consider the interchangeable lenses that both of these cameras require. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Leica M Lens Catalog (M10-R) and the Micro Four Thirds Lens Catalog (E-M1 III).

Concerning battery life, the M10-R gets 210 shots out of its Leica BP-SCL5 battery, while the E-M1 III can take 420 images on a single charge of its Olympus BLH-1 power pack. The power pack in the E-M1 III 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 want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Leica M10-R 139 mm 80 mm 39 mm 660 g 210 Y Jul 2020 8,295ebay.com
2.
 
Olympus E-M1 III 134 mm 91 mm 69 mm 580 g 420 Y Feb 2020 1,799ebay.com
3.
 
Leica M11 139 mm 80 mm 39 mm 640 g 700 Y Jan 2022 8,995 amazon.com
4.
 
Leica SL2 146 mm 107 mm 42 mm 953 g 370 Y Nov 2019 5,999 amazon.com
5.
 
Leica Q2 130 mm 80 mm 92 mm 718 g 370 Y Mar 2019 4,995 amazon.com
6.
 
Leica M-E Typ 240 139 mm 80 mm 42 mm 680 g 500 Y Jun 2019 3,999ebay.com
7.
 
Leica M10-P 139 mm 80 mm 39 mm 660 g 210 Y Aug 2018 7,995ebay.com
8.
 
Leica M10 139 mm 80 mm 39 mm 660 g 210 Y Jan 2017 6,595ebay.com
9.
 
Leica M Typ 262 139 mm 80 mm 42 mm 680 g 400 Y Nov 2015 5,195ebay.com
10.
 
Leica SL 147 mm 104 mm 39 mm 847 g 400 Y Oct 2015 7,450ebay.com
11.
 
Leica M Typ 240 139 mm 80 mm 42 mm 680 g 500 Y Sep 2012 6,950ebay.com
12.
 
Leica M9 139 mm 80 mm 37 mm 585 g 550 n Sep 2009 7,999ebay.com
13.
 
Olympus E-M1X 144 mm 147 mm 75 mm 997 g 870 Y Jan 2019 2,999ebay.com
14.
 
Olympus E-M1 II 134 mm 91 mm 67 mm 574 g 440 Y Sep 2016 1,999ebay.com
15.
 
OM System OM-1 135 mm 92 mm 73 mm 599 g 520 Y Feb 2022 2,199ebay.com
16.
 
Panasonic G95 130 mm 94 mm 77 mm 536 g 290 Y Apr 2019 999ebay.com
17.
 
Panasonic G9 137 mm 97 mm 92 mm 658 g 400 Y Nov 2017 1,699ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will obviously take relative prices into account. 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 E-M1 III was launched at a markedly lower price (by 78 percent) than the M10-R, 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 sensor inside a digital camera is one of the key determinants 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. 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Leica M10-R features a full frame sensor and the Olympus E-M1 III a Four Thirds sensor. The sensor area in the E-M1 III is 74 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 2.0. The sensor in the M10-R has a native 3:2 aspect ratio, while the one in the E-M1 III offers a 4:3 aspect.

Leica M10-R and Olympus E-M1 III sensor measures

With 40.9MP, the M10-R offers a higher resolution than the E-M1 III (20.2MP), but the M10-R nevertheless has larger individual pixels (pixel pitch of 4.57μm versus 3.34μm for the E-M1 III) due to its larger sensor. Moreover, the M10-R is a somewhat more recent model (by 5 months) than the E-M1 III, and its sensor might 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 resolution advantage of the Leica M10-R implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the M10-R for good quality output (200 dots per inch) amounts to 39.3 x 26 inches or 99.9 x 66 cm, for very good quality (250 dpi) 31.5 x 20.8 inches or 79.9 x 52.8 cm, and for excellent quality (300 dpi) 26.2 x 17.3 inches or 66.6 x 44 cm. The corresponding values for the Olympus E-M1 III are 25.9 x 19.4 inches or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inches or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inches or 43.9 x 32.9 cm for excellent quality prints.

The E-M1 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the M10-R, the E-M1 III has the capacity to capture high quality composite images (80MP) 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 M10-R has a native sensitivity range from ISO 100 to ISO 50000. The corresponding ISO settings for the Olympus OM-D E-M1 Mark III are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 64-25600.

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.

M10-R versus E-M1 III MP

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 table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar cameras.

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Sensor Characteristics
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Leica M10-R Full Frame 40.9 7864 5200none25.314.3292495
2.
 
Olympus E-M1 III Four Thirds 20.2 5184 38884K/30p23.313.1135676
3.
 
Leica M11 Full Frame 60.3 9528 6328none26.314.83376100
4.
 
Leica SL2 Full Frame 46.7 8368 55844K/60p25.314.3286695
5.
 
Leica Q2 Full Frame 46.7 8368 55844K/30p26.413.5249196
6.
 
Leica M-E Typ 240 Full Frame 23.7 5952 39761080/25p25.214.2282194
7.
 
Leica M10-P Full Frame 23.8 5952 3992none25.114.1273993
8.
 
Leica M10 Full Frame 23.8 5952 3992none24.413.2213386
9.
 
Leica M Typ 262 Full Frame 23.7 5952 3976none24.813.7247890
10.
 
Leica SL Full Frame 24.0 6000 40004K/30p25.013.4182188
11.
 
Leica M Typ 240 Full Frame 23.7 5952 39761080/25p24.013.3186084
12.
 
Leica M9 Full Frame 18.1 5212 3472none22.511.788469
13.
 
Olympus E-M1X Four Thirds 20.2 5184 38884K/30p23.213.0125475
14.
 
Olympus E-M1 II Four Thirds 20.2 5184 38884K/30p23.712.8131280
15.
 
OM System OM-1 Four Thirds 20.2 5184 38884K/60p23.413.4155377
16.
 
Panasonic G95 Four Thirds 20.2 5184 38884K/30p23.213.0127375
17.
 
Panasonic G9 Four Thirds 20.2 5184 38884K/60p23.112.8113874
Note: DXO values in italics represent estimates based on sensor size and age.
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Many modern cameras cannot only take still pictures, but also record videos. The E-M1 III indeed provides for movie recording, while the M10-R does not. The highest resolution format that the E-M1 III can use is 4K/30p.

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Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the E-M1 III has an electronic viewfinder (2360k dots), while the M10-R 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 E-M1 III has a higher magnification than the one of the M10-R (0.74x vs 0.73x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Leica M10-R, the Olympus E-M1 III, and comparable cameras.

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Core Features
# image 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 M10-Roptical n3.0 / 1037 fixed Y 1/4000s 4.5/s n n
2.
 
Olympus E-M1 III2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
3.
 
Leica M11optical n3.0 / 2333 fixed Y 1/4000s 4.5/s n n
4.
 
Leica SL25760 Y3.2 / 2100 fixed Y 1/8000s 10.0/s n Y
5.
 
Leica Q23680 n3.0 / 1040 fixed Y 1/2000s 10.0/s n Y
6.
 
Leica M-E Typ 240optical n3.0 / 920 fixed n 1/4000s 3.0/s n n
7.
 
Leica M10-Poptical n3.0 / 1037 fixed Y 1/4000s 5.0/s n n
8.
 
Leica M10optical n3.0 / 1037 fixed n 1/4000s 5.0/s n n
9.
 
Leica M Typ 262optical n3.0 / 921 fixed n 1/4000s 3.0/s n n
10.
 
Leica SL4400 Y3.0 / 1040 fixed Y 1/8000s 11.0/s n n
11.
 
Leica M Typ 240optical n3.0 / 920 fixed n 1/4000s 3.0/s n n
12.
 
Leica M9optical n2.5 / 230 fixed n 1/4000s 2.0/s n n
13.
 
Olympus E-M1X2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
14.
 
Olympus E-M1 II2360 n3.0 / 1037 swivel Y 1/8000s 18.0/s n Y
15.
 
OM System OM-15760 n3.0 / 1640 swivel Y 1/8000s 10.0/s n Y
16.
 
Panasonic G952360 n3.0 / 1240 swivel Y 1/4000s 9.0/s Y Y
17.
 
Panasonic G93680 Y3.0 / 1040 swivel Y 1/8000s 20.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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The E-M1 III 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 M10-R 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 E-M1 III 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 Leica M10-R and the Olympus E-M1 III both have 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.

Concerning the storage of imaging data, both the M10-R and the E-M1 III write their files to SDXC cards. The E-M1 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the M10-R only has one slot. The E-M1 III supports UHS-II cards (on its first slot), while the M10-R can use UHS-I cards.

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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 M10-R and Olympus OM-D E-M1 Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Leica M10-RY- / -----Y--
2.
 
Olympus E-M1 IIIYstereo / monoYYmicro3.1Y-Y
3.
 
Leica M11Y- / ----3.2Y-Y
4.
 
Leica SL2Ystereo / monoYYfull3.1Y-Y
5.
 
Leica Q2Ystereo / mono----Y-Y
6.
 
Leica M-E Typ 240Ymono / ----2.0---
7.
 
Leica M10-PY- / -----Y--
8.
 
Leica M10Y- / -----Y--
9.
 
Leica M Typ 262Y- / ----2.0---
10.
 
Leica SLYstereo / monoYYfull3.0Y--
11.
 
Leica M Typ 240Ystereo / mono---2.0---
12.
 
Leica M9Y- / ----2.0---
13.
 
Olympus E-M1XYstereo / monoYYmicro3.0Y-Y
14.
 
Olympus E-M1 IIYstereo / monoYYmicro3.0Y--
15.
 
OM System OM-1Ystereo / monoYYmicro3.0Y-Y
16.
 
Panasonic G95Ystereo / monoYYmicro2.0Y-Y
17.
 
Panasonic G9Ystereo / monoYYfull3.0Y-Y
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Studio photographers will appreciate that the Olympus E-M1 III (unlike the M10-R) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the M10-R and the E-M1 III have been discontinued, but can regularly be found used on ebay. The E-M1 III was replaced by the OM System OM-1, while the M10-R does not have a direct successor. Further information on the features and operation of the M10-R and E-M1 III can be found, respectively, in the Leica M10-R Manual (free pdf) or the online Olympus E-M1 III Manual.

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Review summary

So what is the bottom line? Is the Leica M10-R better than the Olympus E-M1 III or vice versa? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Leica M10-R:

  • More detail: Offers more megapixels (40.9 vs 20.2MP) with a 45% higher linear resolution.
  • Better image quality: Features bigger pixels on a larger sensor for higher quality imaging.
  • Richer colors: The pixel size advantage translates into images with better, more accurate colors.
  • More dynamic range: Larger pixels capture a wider spectrum of light and dark details.
  • Better low-light sensitivity: Larger pixels means good image quality even under poor lighting.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
  • More modern: Is somewhat more recent (announced 5 months after the E-M1 III).

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Arguments in favor of the Olympus OM-D E-M1 Mark III:

  • 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.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.74x vs 0.73x).
  • More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (18 vs 4.5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Less heavy: Has a lower weight (by 80g or 12 percent) and is thus easier to take along.
  • Longer lasting: Gets more shots (420 versus 210) out of a single battery charge.
  • 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 wireless transfer: Supports Bluetooth for image sharing without cables.
  • 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 affordable: Was introduced into a lower priced category (78 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in February 2020).

If the count of relative strengths (bullet points above) is taken as a measure, the E-M1 III is the clear winner of the contest (20 : 8 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.

M10-R 08:20 E-M1 III

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the M10-R and the E-M1 III in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is why expert reviews are important. 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.

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Expert Camera Reviews
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Leica M10-R4.5/5..4/5....4/5 Jul 2020 8,295ebay.com
2.
 
Olympus E-M1 III5/5..5/583/1004.5/54/5 Feb 2020 1,799ebay.com
3.
 
Leica M114.5/5..4.5/5..4.5/54.5/5 Jan 2022 8,995 amazon.com
4.
 
Leica SL24/5..4.5/5..4.5/54/5 Nov 2019 5,999 amazon.com
5.
 
Leica Q2....4.5/584/1004.5/54/5 Mar 2019 4,995 amazon.com
6.
 
Leica M-E Typ 240............ Jun 2019 3,999ebay.com
7.
 
Leica M10-P....3/5....4/5 Aug 2018 7,995ebay.com
8.
 
Leica M104.5/5......4/54.5/5 Jan 2017 6,595ebay.com
9.
 
Leica M Typ 262............ Nov 2015 5,195ebay.com
10.
 
Leica SL4/5..4/584/1004.5/54/5 Oct 2015 7,450ebay.com
11.
 
Leica M Typ 2404/5......4/5.. Sep 2012 6,950ebay.com
12.
 
Leica M9........4.5/5.. Sep 2009 7,999ebay.com
13.
 
Olympus E-M1X4.5/5o5/585/1004.5/5.. Jan 2019 2,999ebay.com
14.
 
Olympus E-M1 II5/5+ +5/585/1004.5/54.5/5 Sep 2016 1,999ebay.com
15.
 
OM System OM-15/5....87/1005/54.5/5 Feb 2022 2,199ebay.com
16.
 
Panasonic G954.5/5+4.5/583/1004.5/54.5/5 Apr 2019 999ebay.com
17.
 
Panasonic G9..+ +5/585/1005/55/5 Nov 2017 1,699ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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Care should be taken when interpreting the review scores above, 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 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? If you would like to see a different side-by-side camera review, just use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Leica M10-R vs Olympus E-M1 III

    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 Specifications
    Camera Model Leica M10-R Olympus E-M1 III
    Camera Type Rangefinder camera Mirrorless system camera
    Camera Lens Leica M mount lenses Micro Four Thirds lenses
    Launch Date July 2020 February 2020
    Launch Price USD 8,295 USD 1,799
    Sensor Specs Leica M10-R Olympus E-M1 III
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Four Thirds Sensor
    Sensor Size 35.8 x 23.9 mm 17.3 x 13.0 mm
    Sensor Area 855.62 mm2 224.9 mm2
    Sensor Diagonal 43 mm 21.6 mm
    Crop Factor 1.0x 2.0x
    Sensor Resolution 40.9 Megapixels 20.2 Megapixels
    Image Resolution 7864 x 5200 pixels 5184 x 3888 pixels
    Pixel Pitch 4.57 μm 3.34 μm
    Pixel Density 4.78 MP/cm2 8.96 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability no Video 4K/30p Video
    ISO Setting 100 - 50,000 ISO 200 - 25,600 ISO
    ISO Boost no Enhancement 64 - 25,600 ISO
    Image Processor Maestro II TruePic IX
    Screen Specs Leica M10-R Olympus E-M1 III
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.73x 0.74x
    Viewfinder Resolution 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 1037k dots 1037k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Leica M10-R Olympus E-M1 III
    Focus System Manual Focus On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 4.5 shutter flaps/s 18 shutter flaps/s
    Electronic Shutterno E-Shutterup to 1/32000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image Stabilizationno shake reductionIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-I Single UHS-II
    Connectivity Specs Leica M10-R Olympus E-M1 III
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector no USB USB 3.1
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Leica M10-R Olympus E-M1 III
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Leica BP-SCL5 Olympus BLH-1
    Battery Life (CIPA)210 shots per charge420 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 139 x 80 x 39 mm
    (5.5 x 3.1 x 1.5 in)
    134 x 91 x 69 mm
    (5.3 x 3.6 x 2.7 in)
    Camera Weight 660 g (23.3 oz) 580 g (20.5 oz)
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