Leica CL vs Olympus E-M10 II

The Leica CL (Typ 7323) and the Olympus OM-D E-M10 Mark II are two digital cameras that were announced, respectively, in November 2017 and August 2015. Both the CL and the E-M10 II are mirrorless interchangeable lens cameras that are based on an APS-C (CL) and a Four Thirds (E-M10 II) sensor. The Leica has a resolution of 24.1 megapixels, whereas the Olympus provides 15.9 MP.

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

Headline Specifications

Leica CL		Olympus E-M10 II
Mirrorless system camera		Mirrorless system camera
Leica T mount lenses		Micro Four Thirds lenses
24.1 MP – APS-C sensor		15.9 MP – Four Thirds sensor
4K/30p Video		1080/60p Video
ISO 100-50,000		ISO 200-25,600
Electronic viewfinder (2360k dots)		Electronic viewfinder (2360k dots)
3.0" LCD – 1040k dots		3.0" LCD – 1040k dots
Fixed touchscreen		Tilting touchscreen
10 shutter flaps per second		8 shutter flaps per second
Lens stabilization only		In-body stabilization
220 shots per battery charge		320 shots per battery charge
131 x 78 x 45 mm, 403 g		120 x 83 x 47 mm, 390 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Leica CL (Typ 7323) and the Olympus OM-D E-M10 Mark II? 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 CL and the Olympus E-M10 II 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 E-M10 II can be obtained in three different colors (black, silver, brown), while the CL 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 II is somewhat smaller (3 percent) than the Leica CL. Moreover, the E-M10 II is slightly lighter (3 percent) than the CL. In this context, it is worth noting that neither the CL nor the E-M10 II are weather-sealed.

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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the CL gets 220 shots out of its Leica BP-DC12 battery, while the E-M10 II can take 320 images on a single charge of its Olympus BLS-50 power pack.

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Leica CL	131 mm	78 mm	45 mm	403 g	220	n	Nov 2017	EUR 2 490	ebay.com
2.		Olympus E-M10 II	120 mm	83 mm	47 mm	390 g	320	n	Aug 2015	EUR 599	ebay.com
3.		Canon 200D	122 mm	93 mm	70 mm	453 g	650	n	Jun 2017	EUR 599	ebay.com
4.		Canon 2000D	129 mm	101 mm	78 mm	475 g	500	n	Feb 2018	EUR 499	amazon.com
5.		Canon M6	112 mm	68 mm	45 mm	390 g	295	n	Feb 2017	EUR 799	ebay.com
6.		Canon M50	116 mm	88 mm	59 mm	390 g	235	n	Feb 2018	EUR 779	ebay.com
7.		Fujifilm X-A5	117 mm	68 mm	40 mm	361 g	450	n	Jan 2018	EUR 449	ebay.com
8.		Fujifilm X-E3	121 mm	74 mm	43 mm	337 g	350	n	Sep 2017	EUR 899	ebay.com
9.		Fujifilm X100F	127 mm	75 mm	52 mm	469 g	390	n	Jan 2017	EUR 1 399	ebay.com
10.		Leica C-LUX	113 mm	67 mm	46 mm	340 g	370	n	Jun 2018	EUR 970	ebay.com
11.		Leica TL	134 mm	69 mm	33 mm	384 g	400	n	Nov 2016	EUR 1 649	ebay.com
12.		Leica TL2	134 mm	69 mm	33 mm	399 g	250	n	Jul 2017	EUR 1 949	ebay.com
13.		Olympus E-M5 II	124 mm	85 mm	45 mm	469 g	310	Y	Feb 2015	EUR 1 099	ebay.com
14.		Olympus E-M10	119 mm	82 mm	46 mm	396 g	320	n	Jan 2014	EUR 599	ebay.com
15.		Olympus E-M10 III	122 mm	84 mm	50 mm	410 g	330	n	Aug 2017	EUR 649	ebay.com
16.		Olympus E-PL7	115 mm	67 mm	38 mm	357 g	350	n	Aug 2014	EUR 599	ebay.com
17.		Panasonic GX80	122 mm	71 mm	44 mm	426 g	290	n	Apr 2016	EUR 799	amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
Convert to Imperial

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 E-M10 II was launched at a markedly lower price (by 77 percent) than the CL, 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 imaging sensor is a crucial determinant 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. 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 more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Leica CL features an APS-C sensor and the Olympus E-M10 II a Four Thirds sensor. The sensor area in the E-M10 II is 39 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 2.0. The sensor in the CL has a native 3:2 aspect ratio, while the one in the E-M10 II offers a 4:3 aspect.

With 24.1MP, the CL offers a higher resolution than the E-M10 II (15.9MP), but the CL nevertheless has larger individual pixels (pixel pitch of 3.92μm versus 3.76μm for the E-M10 II) due to its larger sensor. Moreover, the CL is a much more recent model (by 2 years and 2 months) than the E-M10 II, and its sensor will 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 CL implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the CL for good quality output (200 dots per inch) amounts to 30.1 x 20.1 inches or 76.4 x 51 cm, for very good quality (250 dpi) 24.1 x 16.1 inches or 61.1 x 40.8 cm, and for excellent quality (300 dpi) 20 x 13.4 inches or 50.9 x 34 cm. The corresponding values for the Olympus E-M10 II are 23 x 17.3 inches or 58.5 x 43.9 cm for good quality, 18.4 x 13.8 inches or 46.8 x 35.1 cm for very good quality, and 15.4 x 11.5 inches or 39 x 29.3 cm for excellent quality prints.

The Leica CL (Typ 7323) has a native sensitivity range from ISO 100 to ISO 50000. The corresponding ISO settings for the Olympus OM-D E-M10 Mark II 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 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 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 CL	APS-C	24.1	6014	4014	4K/30p	24.0	13.3	1788	82
2.		Olympus E-M10 II	Four Thirds	15.9	4608	3456	1080/60p	23.1	12.5	842	73
3.		Canon 200D	APS-C	24.0	6000	4000	1080/60p	23.6	13.4	1041	79
4.		Canon 2000D	APS-C	24.0	6000	4000	1080/30p	22.6	11.9	1009	71
5.		Canon M6	APS-C	24.0	6000	4000	1080/60p	23.4	12.6	1317	78
6.		Canon M50	APS-C	24.0	6000	4000	4K/24p	23.8	13.3	1684	81
7.		Fujifilm X-A5	APS-C	24.0	6000	4000	4K/15p	24.0	13.3	1800	82
8.		Fujifilm X-E3	APS-C	24.0	6000	4000	4K/30p	23.9	13.3	1764	82
9.		Fujifilm X100F	APS-C	24.0	6000	4000	1080/60p	23.9	13.2	1704	81
10.		Leica C-LUX	1-inch	20.0	5472	3648	4K/30p	22.1	12.3	481	64
11.		Leica TL	APS-C	16.1	4928	3264	1080/30p	23.9	13.2	1690	81
12.		Leica TL2	APS-C	24.1	6014	4014	4K/30p	23.9	13.3	1753	82
13.		Olympus E-M5 II	Four Thirds	15.9	4608	3456	1080/60p	23.0	12.5	842	73
14.		Olympus E-M10	Four Thirds	15.9	4608	3456	1080/30p	22.8	12.3	884	72
15.		Olympus E-M10 III	Four Thirds	15.9	4608	3456	4K/30p	23.1	12.8	1120	74
16.		Olympus E-PL7	Four Thirds	15.9	4608	3456	1080/30p	22.7	12.4	873	72
17.		Panasonic GX80	Four Thirds	15.8	4592	3448	4K/30p	22.9	12.6	662	71
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the CL provides a higher video resolution than the E-M10 II. It can shoot video footage at 4K/30p, while the Olympus is limited to 1080/60p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. The CL and the E-M10 II are similar in the sense that both feature an electronic viewfinder, which is helpful when framing images in bright sunlight. Moreover, their viewfinders offer an identical resolution of 2360k dots. The table below summarizes some of the other core capabilities of the Leica CL and Olympus E-M10 II 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 CL	2360	Y	3.0 / 1040	fixed	Y	1/8000s	10.0/s	n	n
2.		Olympus E-M10 II	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	Y
3.		Canon 200D	optical	n	3.0 / 1040	swivel	Y	1/4000s	5.0/s	Y	n
4.		Canon 2000D	optical	n	3.0 / 920	fixed	n	1/4000s	3.0/s	Y	n
5.		Canon M6	optional	n	3.0 / 1040	tilting	Y	1/4000s	9.0/s	Y	n
6.		Canon M50	2360	n	3.0 / 1040	swivel	Y	1/4000s	10.0/s	Y	n
7.		Fujifilm X-A5	none	n	3.0 / 1040	tilting	Y	1/4000s	6.0/s	Y	n
8.		Fujifilm X-E3	2360	n	3.0 / 1040	fixed	Y	1/4000s	8.0/s	n	n
9.		Fujifilm X100F	2360	n	3.0 / 1040	fixed	n	1/4000s	8.0/s	Y	n
10.		Leica C-LUX	2330	n	3.0 / 1240	fixed	Y	1/2000s	10.0/s	Y	Y
11.		Leica TL	optional	n	3.7 / 1230	fixed	Y	1/4000s	5.0/s	Y	n
12.		Leica TL2	optional	n	3.7 / 1230	fixed	Y	1/4000s	7.0/s	n	n
13.		Olympus E-M5 II	2360	n	3.0 / 1037	swivel	Y	1/8000s	10.0/s	n	Y
14.		Olympus E-M10	1440	n	3.0 / 1037	tilting	Y	1/4000s	8.0/s	Y	Y
15.		Olympus E-M10 III	2360	n	3.0 / 1040	tilting	Y	1/4000s	8.6/s	Y	Y
16.		Olympus E-PL7	optional	n	3.0 / 1037	tilting	Y	1/4000s	8.0/s	n	Y
17.		Panasonic GX80	2765	n	3.0 / 1040	tilting	Y	1/4000s	8.0/s	Y	Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One feature that is present on the CL, but is missing on the E-M10 II is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

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 CL and the Olympus E-M10 II 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 CL and the E-M10 II write their files to SDXC cards. The CL supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s), while the E-M10 II can use UHS-I cards (up to 104 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 CL (Typ 7323) and Olympus OM-D E-M10 Mark II 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 CL	Y	stereo / mono	-	-	-	-	Y	-	-
2.		Olympus E-M10 II	Y	stereo / mono	-	-	micro	2.0	Y	-	-
3.		Canon 200D	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
4.		Canon 2000D	Y	mono / mono	-	-	mini	2.0	Y	Y	-
5.		Canon M6	Y	stereo / mono	Y	-	mini	2.0	Y	Y	Y
6.		Canon M50	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
7.		Fujifilm X-A5	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
8.		Fujifilm X-E3	Y	stereo / mono	Y	-	micro	2.0	Y	-	Y
9.		Fujifilm X100F	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
10.		Leica C-LUX	-	stereo / mono	-	-	micro	2.0	Y	-	-
11.		Leica TL	Y	stereo / mono	-	-	micro	2.0	Y	-	-
12.		Leica TL2	Y	stereo / mono	-	-	micro	3.0	Y	-	-
13.		Olympus E-M5 II	Y	stereo / mono	Y	-	micro	2.0	Y	-	-
14.		Olympus E-M10	Y	stereo / mono	-	-	micro	2.0	Y	-	-
15.		Olympus E-M10 III	Y	stereo / mono	-	-	micro	2.0	Y	-	-
16.		Olympus E-PL7	Y	stereo / mono	-	-	micro	2.0	Y	-	-
17.		Panasonic GX80	Y	stereo / mono	-	-	micro	2.0	Y	-	-

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

Review summary

So how do things add up? Is there a clear favorite between the Leica CL and the Olympus E-M10 II? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

Reasons to prefer the Leica CL (Typ 7323):

• More detail: Offers more megapixels (24.1 vs 15.9MP) with a 26% higher linear resolution.
• Better image quality: Features a larger and more technologically advanced imaging sensor.
• Richer colors: The sensor size advantage translates into images with better, more accurate colors.
• More dynamic range: Larger sensor captures a wider spectrum of light and dark details.
• Better low-light sensitivity: Larger sensor produces good images even in poorly lit environments.
• Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
• Faster burst: Shoots at higher frequency (10 vs 8 flaps/sec) to capture the decisive moment.
• Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
• More prestigious: Has the Leica luxury appeal, which ensures a high resale price.
• More modern: Reflects 2 years and 2 months of technical progress since the E-M10 II launch.

Advantages of the Olympus OM-D E-M10 Mark II:

• Larger viewfinder image: Features a viewfinder with a higher magnification (0.62x vs 0.49x).
• More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
• Longer lasting: Gets more shots (320 versus 220) out of a single battery charge.
• 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.
• More affordable: Was introduced into a lower priced category (77 percent cheaper at launch).
• More heavily discounted: Has been around for much longer (launched in August 2015).

If the count of individual advantages (bullet points above) is taken as a guide, the CL is the clear winner of the match-up (12 : 7 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.

How about other alternatives? Do the specifications of the Leica CL and the Olympus E-M10 II place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera listing 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 remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the CL or the E-M10 II. 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 where reviews by experts come in. The following table reports the overall ratings of the cameras as published by some of the major camera 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 CL	..	..	4.2/5	..	..	4/5	Nov 2017	EUR 2 490	ebay.com
2.		Olympus E-M10 II	4.5/5	+ +	..	80/100	5/5	5/5	Aug 2015	EUR 599	ebay.com
3.		Canon 200D	4/5	+ +	4/5	78/100	4.5/5	4.5/5	Jun 2017	EUR 599	ebay.com
4.		Canon 2000D	3/5	o	3.5/5	..	3.5/5	3.5/5	Feb 2018	EUR 499	amazon.com
5.		Canon M6	..	..	..	80/100	4/5	4/5	Feb 2017	EUR 799	ebay.com
6.		Canon M50	..	+	4/5	79/100	..	3.5/5	Feb 2018	EUR 779	ebay.com
7.		Fujifilm X-A5	..	+	4.1/5	..	4/5	3.5/5	Jan 2018	EUR 449	ebay.com
8.		Fujifilm X-E3	4.5/5	+	4.5/5	84/100	4.5/5	4.5/5	Sep 2017	EUR 899	ebay.com
9.		Fujifilm X100F	5/5	+	3.9/5	83/100	4.5/5	4.5/5	Jan 2017	EUR 1 399	ebay.com
10.		Leica C-LUX	..	..	3.5/5	..	4.5/5	4/5	Jun 2018	EUR 970	ebay.com
11.		Leica TL	..	..	..	..	..	4/5	Nov 2016	EUR 1 649	ebay.com
12.		Leica TL2	3.5/5	..	3/5	..	4/5	4/5	Jul 2017	EUR 1 949	ebay.com
13.		Olympus E-M5 II	5/5	+ +	4.5/5	81/100	5/5	5/5	Feb 2015	EUR 1 099	ebay.com
14.		Olympus E-M10	4/5	..	..	80/100	5/5	5/5	Jan 2014	EUR 599	ebay.com
15.		Olympus E-M10 III	..	+	5/5	80/100	4.5/5	4.5/5	Aug 2017	EUR 649	ebay.com
16.		Olympus E-PL7	4/5	+	..	..	5/5	4/5	Aug 2014	EUR 599	ebay.com
17.		Panasonic GX80	4.5/5	+ +	..	82/100	5/5	5/5	Apr 2016	EUR 799	amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, please note that some of the review sites have changed their methodology and reporting over time.

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Other camera comparisons

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