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Leica Q2 vs Olympus E-M5 III

The Leica Q2 and the Olympus OM-D E-M5 Mark III are two enthusiast cameras that were announced, respectively, in March 2019 and October 2019. The Q2 is a fixed lens compact, while the E-M5 III is a mirrorless interchangeable lens camera. The cameras are based on a full frame (Q2) and a Four Thirds (E-M5 III) sensor. The Leica has a resolution of 46.7 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 Q2 VS Olympus E-M5 III
Leica Q2 Olympus E-M5 III
Fixed lens compact camera Mirrorless system camera
28mm f/1.7 Micro Four Thirds lenses
46.7 MP, Full Frame Sensor 20.2 MP, Four Thirds Sensor
4K/30p Video 4k/24p Video
ISO 50-50000 ISO 200-25600
Electronic viewfinder (3680k dots) Electronic viewfinder (2360k dots)
3.0" LCD, 1040k dots 3.0" LCD, 1040k dots
Fixed touchscreen Swivel touchscreen
20 shutter flaps per second 10 shutter flaps per second
Lens-based stabilizationIn-body stabilization
Weathersealed bodyWeathersealed body
370 shots per battery charge310 shots per battery charge
130 x 80 x 92 mm, 718 g 125 x 85 x 50 mm, 414 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Leica Q2 and the Olympus OM-D E-M5 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.

Body comparison

The side-by-side display below illustrates the physical size and weight of the Leica Q2 and the Olympus E-M5 III. 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 size dimensions are rounded to the nearest millimeter.

The E-M5 III can be obtained in two different colors (black, silver), while the Q2 is only available in black.

Size Leica Q2 vs Olympus E-M5 III
Compare Q2 versus E-M5 III top
Comparison Q2 or E-M5 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-M5 III is somewhat larger (2 percent) than the Leica Q2. 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 Q2 has a lens built in, whereas the E-M5 III 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 E-M5 III and their specifications in the Micro Four Thirds Lens Catalog.

The power pack in the E-M5 III 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. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Camera
Model
 
Leica Q2» 5.1 in 3.1 in 3.6 in 25.3 oz 370 Y Mar 2019 4,995 iLeica Q2
 
Olympus E-M5 III« 4.9 in 3.3 in 2.0 in 14.6 oz 310 Y Oct 2019 1,199 iOlympus E-M5 III
 
Canon R« » 5.5 in 3.9 in 3.3 in 23.3 oz 370 Y Sep 2018 2,299 iCanon R
 
Fujifilm GFX 50R« » 6.3 in 3.8 in 2.6 in 27.3 oz 400 Y Sep 2018 4,499 iFujifilm GFX 50R
 
Hasselblad X1D II« » 5.8 in 3.8 in 2.8 in 27.0 oz .. Y Jun 2019 5,750 iHasselblad X1D II
 
Leica M-E Typ 240« » 5.5 in 3.1 in 1.7 in 24.0 oz .. Y Jun 2019 3,999 iLeica M-E Typ 240
 
Leica M10-P« » 5.5 in 3.1 in 1.5 in 23.3 oz 210 Y Aug 2018 7,995 iLeica M10-P
 
Leica M10« » 5.5 in 3.1 in 1.5 in 23.3 oz 210 Y Jan 2017 6,595 iLeica M10
 
Leica M Typ 262« » 5.5 in 3.1 in 1.7 in 24.0 oz .. Y Nov 2015 5,195iLeica M Typ 262
 
Leica Q Typ 116« » 5.1 in 3.1 in 3.7 in 22.6 oz 300 n Jun 2015 4,249iLeica Q Typ 116
 
Nikon Z7« » 5.3 in 4.0 in 2.6 in 23.8 oz 330 Y Aug 2018 3,399 iNikon Z7
 
Olympus PEN-F« » 4.9 in 2.8 in 1.5 in 15.1 oz 330 n Jan 2016 1,199 iOlympus PEN-F
 
Olympus E-M5 II« » 4.9 in 3.3 in 1.8 in 16.5 oz 310 Y Feb 2015 1,099iOlympus E-M5 II
 
Olympus E-M1« » 5.1 in 3.7 in 2.5 in 17.5 oz 350 Y Sep 2013 1,399iOlympus E-M1
 
Olympus E-M5« » 4.8 in 3.5 in 1.7 in 15.0 oz 360 Y Feb 2012 1,299iOlympus E-M5
 
Panasonic GX8« » 5.2 in 3.1 in 2.5 in 17.2 oz 330 Y Jul 2015 1,199iPanasonic GX8
 
Zeiss ZX1« » 5.6 in 3.7 in 1.8 in 28.2 oz 250 n Sep 2018 4,199 iZeiss ZX1
Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. 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 tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Leica Q2 features a full frame sensor and the Olympus E-M5 III a Four Thirds sensor. The sensor area in the E-M5 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 Q2 has a native 3:2 aspect ratio, while the one in the E-M5 III offers a 4:3 aspect.

Leica Q2 and Olympus E-M5 III sensor measures

With 46.7MP, the Q2 offers a higher resolution than the E-M5 III (20.2MP), but the Q2 nevertheless has larger individual pixels (pixel pitch of 4.30μm versus 3.34μm for the E-M5 III) due to its larger sensor. However, the E-M5 III is a somewhat more recent model (by 7 months) than the Q2, and its sensor might have benefitted from technological advances during this time that 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 Q2 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the Q2 for good quality output (200 dots per inch) amounts to 41.8 x 27.9 inch or 106.3 x 70.9 cm, for very good quality (250 dpi) 33.5 x 22.3 inch or 85 x 56.7 cm, and for excellent quality (300 dpi) 27.9 x 18.6 inch or 70.8 x 47.3 cm. The corresponding values for the Olympus E-M5 III are 25.9 x 19.4 inch or 65.8 x 49.4 cm for good quality, 20.7 x 15.6 inch or 52.7 x 39.5 cm for very good quality, and 17.3 x 13 inch or 43.9 x 32.9 cm for excellent quality prints.

The E-M5 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

Unlike the Q2, the E-M5 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 Q2 has a native sensitivity range from ISO 50 to ISO 50000. The corresponding ISO settings for the Olympus OM-D E-M5 Mark III are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 64-25600.

Q2 versus E-M5 III MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
 
Leica Q2 Full Frame 46.7 8368 55844K/30p26.413.5249196Leica Q2
 
Olympus E-M5 III Four Thirds 20.2 5184 38884k/24p........Olympus E-M5 III
 
Canon R Full Frame 30.1 6720 44804K/30p24.513.5274289Canon R
 
Fujifilm GFX 50R Medium Format 51.1 8256 61921080/30p........Fujifilm GFX 50R
 
Hasselblad X1D II Medium Format 51.3 8272 6200none........Hasselblad X1D II
 
Leica M-E Typ 240 Full Frame 23.7 5952 39761080/25p........Leica M-E Typ 240
 
Leica M10-P Full Frame 23.8 5952 3992none........Leica M10-P
 
Leica M10 Full Frame 23.8 5952 3992none24.413.2213386Leica M10
 
Leica M Typ 262 Full Frame 23.7 5952 3976none........Leica M Typ 262
 
Leica Q Typ 116 Full Frame 24.0 6000 40001080/60p24.312.7222185Leica Q Typ 116
 
Nikon Z7 Full Frame 45.4 8256 55044K/30p26.314.6266899Nikon Z7
 
Olympus PEN-F Four Thirds 20.2 5184 38881080/60p23.112.489474Olympus PEN-F
 
Olympus E-M5 II Four Thirds 15.9 4608 34561080/60p23.012.584273Olympus E-M5 II
 
Olympus E-M1 Four Thirds 15.9 4608 34561080/30p23.012.775773Olympus E-M1
 
Olympus E-M5 Four Thirds 15.9 4608 34561080/60i22.812.382671Olympus E-M5
 
Panasonic GX8 Four Thirds 20.2 5184 38884K/30p23.512.680675Panasonic GX8
 
Zeiss ZX1 Full Frame 37.4 7488 49924K/30p........Zeiss ZX1

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 Q2 provides a higher frame rate than the E-M5 III. It can shoot video footage at 4K/30p, while the Olympus is limited to 4k/24p.

 

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. The two cameras under consideration are similar with respect to both having an electronic viewfinder. However, the one in the Q2 offers a substantially higher resolution than the one in the E-M5 III (3680k vs 2360k dots). The table below summarizes some of the other core capabilities of the Leica Q2 and Olympus E-M5 III in connection with corresponding information for a sample of similar cameras.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
 
Leica Q23680 n 3.0 1040 fixed Y 1/2000s 20.0 n Y Leica Q2
 
Olympus E-M5 III2360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y Olympus E-M5 III
 
Canon R3690 Y 3.2 2100 swivel Y 1/8000s 8.0 n n Canon R
 
Fujifilm GFX 50R3690 n 3.2 2360 tilting Y 1/4000s 3.0 n n Fujifilm GFX 50R
 
Hasselblad X1D II3690 n 3.6 2360 fixed Y 1/2000s 2.7 n n Hasselblad X1D II
 
Leica M-E Typ 240optical n 3.0 920 fixed n 1/4000s 3.0 n n Leica M-E Typ 240
 
Leica M10-Poptical n 3.0 1037 fixed Y 1/4000s 5.0 n n Leica M10-P
 
Leica M10optical n 3.0 1037 fixed n 1/4000s 5.0 n n Leica M10
 
Leica M Typ 262optical n 3.0 921 fixed n 1/4000s 3.0 n n Leica M Typ 262
 
Leica Q Typ 1163680 n 3.0 1040 fixed Y 1/2000s 10.0 n Y Leica Q Typ 116
 
Nikon Z73690 Y 3.2 2100 tilting Y 1/8000s 9.0 n Y Nikon Z7
 
Olympus PEN-F2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y Olympus PEN-F
 
Olympus E-M5 II2360 n 3.0 1037 swivel Y 1/8000s 10.0 n Y Olympus E-M5 II
 
Olympus E-M12360 n 3.0 1037 tilting Y 1/8000s 10.0 n Y Olympus E-M1
 
Olympus E-M51440 n 3.0 610 tilting Y 1/4000s 9.0 n Y Olympus E-M5
 
Panasonic GX82360 n 3.0 1040 swivel Y 1/8000s 10.0 n Y Panasonic GX8
 
Zeiss ZX16221 n 4.3 2765 fixed Y 1/1000s 3.0 n n Zeiss ZX1
The E-M5 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 Q2 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, both cameras under consideration feature an 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 Q2 and the Olympus E-M5 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 Q2 and the E-M5 III write their files to SDXC cards. Both cameras support UHS-II cards, which provide for Ultra High Speed data transfer of up to 312 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 Leica Q2 and Olympus OM-D E-M5 Mark III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
 
Leica Q2Ystereomono--nonenoneY-YLeica Q2
 
Olympus E-M5 IIIYstereomonoY-micro2.0Y-YOlympus E-M5 III
 
Canon RYstereomonoYYmini3.1Y-YCanon R
 
Fujifilm GFX 50RYstereomonoYYmicro3.0Y-YFujifilm GFX 50R
 
Hasselblad X1D IIYstereomonoYYnone3.0Y--Hasselblad X1D II
 
Leica M-E Typ 240Ymononone--none2.0---Leica M-E Typ 240
 
Leica M10-PYnonenone--nonenoneY--Leica M10-P
 
Leica M10Ynonenone--nonenoneY--Leica M10
 
Leica M Typ 262Ynonenone--none2.0---Leica M Typ 262
 
Leica Q Typ 116Ystereomono--micro2.0YY-Leica Q Typ 116
 
Nikon Z7YstereomonoYYmicro3.1Y-YNikon Z7
 
Olympus PEN-FYstereomono--micro2.0Y--Olympus PEN-F
 
Olympus E-M5 IIYstereomonoY-micro2.0Y--Olympus E-M5 II
 
Olympus E-M1YstereomonoY-micro2.0Y--Olympus E-M1
 
Olympus E-M5Ystereomono--mini2.0---Olympus E-M5
 
Panasonic GX8YstereomonoY-micro2.0YY-Panasonic GX8
 
Zeiss ZX1Ystereomono--none3.1YYYZeiss ZX1

It is notable that the E-M5 III has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The Q2 does not feature such a mic input.

Studio photographers will appreciate that the Olympus E-M5 III (unlike the Q2) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the Q2 and the E-M5 III are recent models that are part of the current product line-up. The Q2 replaced the earlier Leica Q Typ 116, while the E-M5 III followed on from the Olympus E-M5 II. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Leica and Olympus websites.

Review summary

So what is the bottom line? Is there a clear favorite between the Leica Q2 and the Olympus E-M5 III? Which camera is better? The listing below highlights the relative strengths of the two models.

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Reasons to prefer the Leica Q2:

  • More detail: Offers more megapixels (46.7 vs 20.2MP) with a 55% 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.
  • Better video: Provides higher movie framerates (4K/30p versus 4k/24p).
  • More detailed viewfinder: Has higher resolution electronic viewfinder (3680k vs 2360k dots).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.76x vs 0.68x).
  • Faster burst: Shoots at higher frequency (20 vs 10 flaps/sec) to capture the decisive moment.
  • Ready to shoot: Has a lens built-in, whereas the E-M5 III requires a separate lens.
  • Longer lasting: Can take more shots (370 versus 310) on a single battery charge.
  • More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
  • More heavily discounted: Has been on the market for longer (launched in March 2019).

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Advantages of the Olympus OM-D E-M5 Mark III:

  • High quality composites: Can combine several shots after pixel-shifting its sensor.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • 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 1/2000s) to freeze action.
  • More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • More modern: Was introduced somewhat (7 months) more recently.

If the number of relative strengths (bullet points above) is taken as a guide, the Q2 is the clear winner of the match-up (13 : 9 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding 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.

Q2 13:09 E-M5 III

How about other alternatives? Do the specifications of the Leica Q2 and the Olympus E-M5 III place the cameras among the top in their class? Find out in the latest Best Prime Lens Compact Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the Q2 and the E-M5 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 hands-on reviews by experts are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear 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.

Review Scores
  Camera
Model
cam
era
  labs  
dp
re
  view  
e
photo
  zine  
ima
ging
resource
photo
graphy
  blog  
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Camera
Model
 
Leica Q2..84/1004.5/5..4/5 Mar 2019 4,995 iLeica Q2
 
Olympus E-M5 III+82/1004.5/5..4.5/5 Oct 2019 1,199 iOlympus E-M5 III
 
Canon Ro79/1004.5/54/54/5 Sep 2018 2,299 iCanon R
 
Fujifilm GFX 50R..84/1004.5/54.5/54.5/5 Sep 2018 4,499 iFujifilm GFX 50R
 
Hasselblad X1D II....4/5.... Jun 2019 5,750 iHasselblad X1D II
 
Leica M-E Typ 240.......... Jun 2019 3,999 iLeica M-E Typ 240
 
Leica M10-P........4/5 Aug 2018 7,995 iLeica M10-P
 
Leica M10....4/5..4.5/5 Jan 2017 6,595 iLeica M10
 
Leica M Typ 262.......... Nov 2015 5,195iLeica M Typ 262
 
Leica Q Typ 116..80/1004.5/5..4.5/5 Jun 2015 4,249iLeica Q Typ 116
 
Nikon Z7+89/1004.5/54.5/55/5 Aug 2018 3,399 iNikon Z7
 
Olympus PEN-F..82/1004.5/54.5/55/5 Jan 2016 1,199 iOlympus PEN-F
 
Olympus E-M5 II+ +81/1005/54.5/55/5 Feb 2015 1,099iOlympus E-M5 II
 
Olympus E-M1+ +84/1004.5/54.5/54.5/5 Sep 2013 1,399iOlympus E-M1
 
Olympus E-M5+ +80/1004.5/55/55/5 Feb 2012 1,299iOlympus E-M5
 
Panasonic GX8+82/1004.5/55/54.5/5 Jul 2015 1,199iPanasonic GX8
 
Zeiss ZX1.......... Sep 2018 4,199 iZeiss ZX1
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.

Leica Q2:
Check Amazon price
Olympus E-M5 III:
Check Amazon price

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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Leica Q2 vs Olympus E-M5 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 Q2 Olympus E-M5 III
    Camera Type Fixed lens compact camera Mirrorless system camera
    Camera Lens 28mm f/1.7 Micro Four Thirds lenses
    Launch Date March 2019 October 2019
    Launch Price USD 4995 USD 1199
    Sensor Specs Leica Q2 Olympus E-M5 III
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor Four Thirds Sensor
    Sensor Size 36.0 x 24.0 mm 17.3 x 13.0 mm
    Sensor Area 864 mm2 224.9 mm2
    Sensor Diagonal 43.3 mm 21.6 mm
    Crop Factor 1.0x 2.0x
    Sensor Resolution 46.7 Megapixels 20.2 Megapixels
    Image Resolution 8368 x 5584 pixels 5184 x 3888 pixels
    Pixel Pitch 4.30 μm 3.34 μm
    Pixel Density 5.41 MP/cm2 8.96 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 4K/30p Video 4k/24p Video
    ISO Setting 50-50000 ISO 200-25600 ISO
    ISO Boost no Enhancement 64-25600 ISO
    DXO Sensor Quality (score) 96 ..
    DXO Color Depth (bits) 26.4 ..
    DXO Dynamic Range (EV) 13.5 ..
    DXO Low Light (ISO) 2491 ..
    Screen Specs Leica Q2 Olympus E-M5 III
    Viewfinder Type Electronic viewfinder Electronic viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.76x 0.68x
    Viewfinder Resolution 3680k dots 2360k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0 inch 3.0 inch
    LCD Resolution 1040k dots 1040k dots
    LCD Attachment Fixed screen Swivel screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Leica Q2 Olympus E-M5 III
    Focus System Contrast-detect AF On-Sensor Phase-detect
    Manual Focusing AidFocus PeakingFocus Peaking
    Max Shutter Speed (mechanical) 1/2000/s 1/8000/s
    Continuous Shooting 20 shutter flaps/s 10 shutter flaps/s
    Electronic Shutterup to 1/40000sup to 1/32000s
    Time-Lapse PhotographyIntervalometer built-inIntervalometer built-in
    Image StabilizationLens-based stabilizationIn-body stabilization
    Fill Flash no On-Board Flash no On-Board Flash
    Storage Medium SDXC cards SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support UHS-II UHS-II
    Connectivity Specs Leica Q2 Olympus E-M5 III
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB no USB 2.0
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support Wifi built-in Wifi built-in
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Leica Q2 Olympus E-M5 III
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type BP-SCL4 BLS-50
    Battery Life (CIPA)370 shots per charge310 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 130 x 80 x 92 mm
    (5.1 x 3.1 x 3.6 in)
    125 x 85 x 50 mm
    (4.9 x 3.3 x 2.0 in)
    Camera Weight 718 g (25.3 oz) 414 g (14.6 oz)

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