Leica Q2 vs Olympus E-M10 IV

The Leica Q2 and the Olympus OM-D E-M10 Mark IV are two digital cameras that were officially introduced, respectively, in March 2019 and August 2020. The Q2 is a fixed lens compact, while the E-M10 IV is a mirrorless interchangeable lens camera. The cameras are based on a full frame (Q2) and a Four Thirds (E-M10 IV) 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		Olympus E-M10 IV
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/30p Video
ISO 50-50,000		ISO 200-25,600
Electronic viewfinder (3680k dots)		Electronic viewfinder (2360k dots)
3.0" LCD – 1040k dots		3.0" LCD – 1040k dots
Fixed touchscreen		Tilting touchscreen
10 shutter flaps per second		15 shutter flaps per second
Lens-based stabilization		In-body stabilization
Weathersealed body		not weather sealed
370 shots per battery charge		360 shots per battery charge
130 x 80 x 92 mm, 718 g		122 x 84 x 49 mm, 383 g

Check Q2 price at
amazon.com
Check E-M10 IV price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Leica Q2 and the Olympus OM-D E-M10 Mark 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.

Body comparison

An illustration of the physical size and weight of the Leica Q2 and the Olympus E-M10 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 measures are rounded to the nearest millimeter.

The E-M10 IV can be obtained in two different colors (black, silver), while the Q2 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 Olympus E-M10 IV is somewhat smaller (1 percent) than the Leica Q2. It is worth mentioning in this context that the Q2 is splash and dust resistant, while the E-M10 IV does not feature any corresponding weather-sealing.

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-M10 IV 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-M10 IV and their specifications in the Micro Four Thirds Lens Catalog.

Concerning battery life, the Q2 gets 370 shots out of its Leica BP-SCL4 battery, while the E-M10 IV can take 360 images on a single charge of its Olympus BLS-50 power pack. The power pack in the E-M10 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, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Leica Q2	130 mm	80 mm	92 mm	718 g	370	Y	Mar 2019	US$ 4 999	amazon.com
2.		Olympus E-M10 IV	122 mm	84 mm	49 mm	383 g	360	n	Aug 2020	US$ 699	amazon.com
3.		Canon R	139 mm	98 mm	84 mm	660 g	370	Y	Sep 2018	US$ 2 299	ebay.com
4.		Fujifilm GFX 50R	161 mm	97 mm	66 mm	775 g	400	Y	Sep 2018	US$ 4 499	ebay.com
5.		Leica M Typ 262	139 mm	80 mm	42 mm	680 g	400	Y	Nov 2015	US$ 5 195	ebay.com
6.		Leica M10	139 mm	80 mm	39 mm	660 g	210	Y	Jan 2017	US$ 6 599	ebay.com
7.		Leica M10-P	139 mm	80 mm	39 mm	660 g	210	Y	Aug 2018	US$ 7 999	ebay.com
8.		Leica M10-R	139 mm	80 mm	39 mm	660 g	210	Y	Jul 2020	US$ 8 299	ebay.com
9.		Leica Q Typ 116	130 mm	80 mm	93 mm	640 g	300	n	Jun 2015	US$ 4 249	ebay.com
10.		Leica Q3	130 mm	80 mm	93 mm	743 g	350	Y	May 2023	US$ 5 999	amazon.com
11.		Nikon Z7	134 mm	101 mm	67 mm	675 g	330	Y	Aug 2018	US$ 3 399	ebay.com
12.		Olympus E-M10	119 mm	82 mm	46 mm	396 g	320	n	Jan 2014	US$ 699	ebay.com
13.		Olympus E-M10 II	120 mm	83 mm	47 mm	390 g	320	n	Aug 2015	US$ 649	ebay.com
14.		Olympus E-M10 III	122 mm	84 mm	50 mm	410 g	330	n	Aug 2017	US$ 649	ebay.com
15.		Olympus E-P7	118 mm	69 mm	38 mm	337 g	360	n	Jun 2021	US$ 799	amazon.com
16.		Olympus E-PL10	117 mm	68 mm	39 mm	380 g	350	n	Oct 2019	US$ 599	ebay.com
17.		Zeiss ZX1	142 mm	93 mm	46 mm	800 g	250	n	Sep 2018	US$ 5 999	ebay.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 naturally be influenced heavily by the price. 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. 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 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 tend to be associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Leica Q2 features a full frame sensor and the Olympus E-M10 IV a Four Thirds sensor. The sensor area in the E-M10 IV 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-M10 IV offers a 4:3 aspect.

With 46.7MP, the Q2 offers a higher resolution than the E-M10 IV (20.2MP), but the Q2 nevertheless has larger individual pixels (pixel pitch of 4.30μm versus 3.34μm for the E-M10 IV) due to its larger sensor. However, the E-M10 IV is a somewhat more recent model (by 1 year and 4 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 inches or 106.3 x 70.9 cm, for very good quality (250 dpi) 33.5 x 22.3 inches or 85 x 56.7 cm, and for excellent quality (300 dpi) 27.9 x 18.6 inches or 70.8 x 47.3 cm. The corresponding values for the Olympus E-M10 IV 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 Leica Q2 has a native sensitivity range from ISO 50 to ISO 50000. The corresponding ISO settings for the Olympus OM-D E-M10 Mark IV are ISO 200 to ISO 25600, with the possibility to increase the ISO range to 100-25600.

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.

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 adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics

		Camera Model	Sensor Class	Resolution (MP)	Horiz. Pixels	Vert. Pixels	Video Format	DXO Portrait	DXO Landscape	DXO Sports	DXO Overall
1.		Leica Q2	Full Frame	46.7	8368	5584	4K/30p	26.4	13.5	2491	96
2.		Olympus E-M10 IV	Four Thirds	20.2	5184	3888	4K/30p	23.3	13.2	1402	76
3.		Canon R	Full Frame	30.1	6720	4480	4K/30p	24.5	13.5	2742	89
4.		Fujifilm GFX 50R	Medium Format	51.1	8256	6192	1080/30p	25.7	14.4	3169	98
5.		Leica M Typ 262	Full Frame	23.7	5952	3976	none	24.8	13.7	2478	90
6.		Leica M10	Full Frame	23.8	5952	3992	none	24.4	13.2	2133	86
7.		Leica M10-P	Full Frame	23.8	5952	3992	none	25.1	14.1	2739	93
8.		Leica M10-R	Full Frame	40.9	7864	5200	none	25.3	14.3	2924	95
9.		Leica Q Typ 116	Full Frame	24.0	6000	4000	1080/60p	24.3	12.7	2221	85
10.		Leica Q3	Full Frame	60.3	9528	6328	8K/30p	25.4	14.7	3216	96
11.		Nikon Z7	Full Frame	45.4	8256	5504	4K/30p	26.3	14.6	2668	99
12.		Olympus E-M10	Four Thirds	15.9	4608	3456	1080/30p	22.8	12.3	884	72
13.		Olympus E-M10 II	Four Thirds	15.9	4608	3456	1080/60p	23.1	12.5	842	73
14.		Olympus E-M10 III	Four Thirds	15.9	4608	3456	4K/30p	23.1	12.8	1120	74
15.		Olympus E-P7	Four Thirds	20.2	5184	3888	4K/30p	23.4	13.3	1494	77
16.		Olympus E-PL10	Four Thirds	15.9	4608	3456	4K/30p	23.3	13.1	1324	76
17.		Zeiss ZX1	Full Frame	37.4	7488	4992	4K/30p	25.2	14.1	2759	94
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 also of capturing video footage. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (4K/30p).

Feature comparison

Beyond body and sensor, cameras can and do differ across a range 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-M10 IV (3680k vs 2360k dots). The table below summarizes some of the other core capabilities of the Leica Q2 and Olympus E-M10 IV 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 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 Q2	3680	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	n	Y
2.		Olympus E-M10 IV	2360	n	3.0 / 1040	tilting	Y	1/4000s	15.0/s	Y	Y
3.		Canon R	3690	Y	3.2 / 2100	swivel	Y	1/8000s	8.0/s	n	n
4.		Fujifilm GFX 50R	3690	n	3.2 / 2360	tilting	Y	1/4000s	3.0/s	n	n
5.		Leica M Typ 262	optical	n	3.0 / 921	fixed	n	1/4000s	3.0/s	n	n
6.		Leica M10	optical	n	3.0 / 1037	fixed	n	1/4000s	5.0/s	n	n
7.		Leica M10-P	optical	n	3.0 / 1037	fixed	Y	1/4000s	5.0/s	n	n
8.		Leica M10-R	optical	n	3.0 / 1037	fixed	Y	1/4000s	4.5/s	n	n
9.		Leica Q Typ 116	3680	n	3.0 / 1040	fixed	Y	1/2000s	10.0/s	n	Y
10.		Leica Q3	5760	n	3.0 / 1840	tilting	Y	1/2000s	15.0/s	n	Y
11.		Nikon Z7	3690	Y	3.2 / 2100	tilting	Y	1/8000s	9.0/s	n	Y
12.		Olympus E-M10	1440	n	3.0 / 1037	tilting	Y	1/4000s	8.0/s	Y	Y
13.		Olympus E-M10 II	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	Y
14.		Olympus E-M10 III	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.6/s	Y	Y
15.		Olympus E-P7	none	n	3.0 / 1040	tilting	Y	1/4000s	8.7/s	Y	Y
16.		Olympus E-PL10	none	n	3.0 / 1040	tilting	Y	1/4000s	8.6/s	Y	Y
17.		Zeiss ZX1	6221	n	4.3 / 2765	fixed	Y	1/1000s	3.0/s	n	n
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 E-M10 IV has one, while the Q2 does not. While the built-in flash of the E-M10 IV is not very powerful, it can at times be useful as a fill-in light.

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-M10 IV 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-M10 IV 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-M10 Mark IV 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 Mic / Speaker	Microphone Port	Headphone Port	HDMI Port	USB Port	WiFi Support	NFC Support	Bluetooth Support
1.		Leica Q2	Y	stereo / mono	-	-	-	-	Y	-	Y
2.		Olympus E-M10 IV	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
3.		Canon R	Y	stereo / mono	Y	Y	mini	3.1	Y	-	Y
4.		Fujifilm GFX 50R	Y	stereo / mono	Y	Y	micro	3.0	Y	-	Y
5.		Leica M Typ 262	Y	- / -	-	-	-	2.0	-	-	-
6.		Leica M10	Y	- / -	-	-	-	-	Y	-	-
7.		Leica M10-P	Y	- / -	-	-	-	-	Y	-	-
8.		Leica M10-R	Y	- / -	-	-	-	-	Y	-	-
9.		Leica Q Typ 116	Y	stereo / mono	-	-	micro	2.0	Y	Y	-
10.		Leica Q3	Y	stereo / mono	-	-	micro	3.1	Y	-	Y
11.		Nikon Z7	Y	stereo / mono	Y	Y	micro	3.1	Y	-	Y
12.		Olympus E-M10	Y	stereo / mono	-	-	micro	2.0	Y	-	-
13.		Olympus E-M10 II	Y	stereo / mono	-	-	micro	2.0	Y	-	-
14.		Olympus E-M10 III	Y	stereo / mono	-	-	micro	2.0	Y	-	-
15.		Olympus E-P7	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
16.		Olympus E-PL10	Y	stereo / mono	-	-	micro	2.0	Y	-	Y
17.		Zeiss ZX1	Y	stereo / mono	-	-	-	3.1	Y	Y	Y

Both the Q2 and the E-M10 IV are recent models that are part of the current product line-up. The Q2 replaced the earlier Leica Q Typ 116, while the E-M10 IV followed on from the Olympus E-M10 III. Further information on the features and operation of the Q2 and E-M10 IV can be found, respectively, in the Leica Q2 Manual (free pdf) or the online Olympus E-M10 IV Manual.

Review summary

So what conclusions can be drawn? Is the Leica Q2 better than the Olympus E-M10 IV or vice versa? Below is a summary of the relative strengths of each of the two contestants.

Advantages of 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.
• 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 0.62x).
• Ready to shoot: Has a lens built-in, whereas the E-M10 IV requires a separate lens.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• 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).

Reasons to prefer the Olympus OM-D E-M10 Mark IV:

• 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 shutter: Has higher mechanical shutter speed (1/4000s vs 1/2000s) to freeze action.
• Faster burst: Shoots at higher frequency (15 vs 10 flaps/sec) to capture the decisive moment.
• More flexible: Takes interchangeable lenses and can thus be used with specialty optics.
• Easier travel charging: Can be conveniently charged via its USB port.
• Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
• More modern: Was introduced somewhat (1 year and 4 months) more recently.

If the count of individual advantages (bullet points above) is taken as a guide, the Q2 emerges as the winner of the contest (11 : 8 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 Leica Q2 and the Olympus E-M10 IV 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 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 Q2 and the E-M10 IV 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 (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.

Expert Camera Reviews

		Camera   Model	AP   score	CL   score	DCW   score	DPR   score	EPZ   score	PB   score	Camera Launch	Launch Price	Street Price
1.		Leica Q2	..	..	4.5/5	84/100	4.5/5	4/5	Mar 2019	US$ 4 999	amazon.com
2.		Olympus E-M10 IV	4.5/5	..	5/5	81/100	4.5/5	4.5/5	Aug 2020	US$ 699	amazon.com
3.		Canon R	4/5	o	4/5	79/100	4.5/5	4/5	Sep 2018	US$ 2 299	ebay.com
4.		Fujifilm GFX 50R	5/5	..	5/5	84/100	4.5/5	4.5/5	Sep 2018	US$ 4 499	ebay.com
5.		Leica M Typ 262	..	..	..	..	..	..	Nov 2015	US$ 5 195	ebay.com
6.		Leica M10	4.5/5	..	..	..	4/5	4.5/5	Jan 2017	US$ 6 599	ebay.com
7.		Leica M10-P	..	..	3/5	..	..	4/5	Aug 2018	US$ 7 999	ebay.com
8.		Leica M10-R	4.5/5	..	4/5	..	..	4/5	Jul 2020	US$ 8 299	ebay.com
9.		Leica Q Typ 116	5/5	..	..	80/100	4.5/5	4.5/5	Jun 2015	US$ 4 249	ebay.com
10.		Leica Q3	5/5	..	4.5/5	..	..	4.5/5	May 2023	US$ 5 999	amazon.com
11.		Nikon Z7	5/5	+	4.8/5	89/100	4.5/5	5/5	Aug 2018	US$ 3 399	ebay.com
12.		Olympus E-M10	4/5	..	..	80/100	5/5	5/5	Jan 2014	US$ 699	ebay.com
13.		Olympus E-M10 II	4.5/5	+ +	..	80/100	5/5	5/5	Aug 2015	US$ 649	ebay.com
14.		Olympus E-M10 III	..	+	5/5	80/100	4.5/5	4.5/5	Aug 2017	US$ 649	ebay.com
15.		Olympus E-P7	4/5	..	4.5/5	..	..	4.5/5	Jun 2021	US$ 799	amazon.com
16.		Olympus E-PL10	..	..	4/5	77/100	..	4/5	Oct 2019	US$ 599	ebay.com
17.		Zeiss ZX1	3/5	..	..	83/100	4/5	4/5	Sep 2018	US$ 5 999	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

Care should be taken when interpreting the review scores above, though. The ratings are only valid when referring to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price 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.

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Other camera comparisons

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