Olympus E-5 vs Pentax MX-1

The Olympus E-5 and the Pentax MX-1 are two digital cameras that were officially introduced, respectively, in September 2010 and January 2013. The E-5 is a DSLR, while the MX-1 is a fixed lens compact. The cameras are based on a Four Thirds (E-5) and a 1/1.7-inch (MX-1) sensor. The Olympus has a resolution of 12.2 megapixels, whereas the Pentax provides 12 MP.

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

Headline Specifications

Olympus E-5		Pentax MX-1
Digital single lens reflex		Fixed lens compact camera
Four Thirds lenses		28-112mm f/1.8-2.5
12.2 MP – Four Thirds sensor		12 MP – 1/1.7" sensor
720/30p Video		1080/30p Video
ISO 100-6,400		ISO 100-12,800
Optical viewfinder		No viewfinder, LCD framing
3.0" LCD – 920k dots		3.0" LCD – 920k dots
Swivel screen (not touch-sensitive)		Tilting screen (no touchscreen)
5 shutter flaps per second		1 shutter flaps per second
In-body stabilization		In-body stabilization
Weathersealed body		not weather sealed
750 shots per battery charge		290 shots per battery charge
142 x 117 x 75 mm, 873 g		122 x 61 x 51 mm, 391 g

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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus E-5 and the Pentax MX-1? 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 Olympus E-5 and the Pentax MX-1 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth measures are rounded to the nearest millimeter.

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax MX-1 is considerably smaller (55 percent) than the Olympus E-5. It is worth mentioning in this context that the E-5 is splash and dust resistant, while the MX-1 does not feature any corresponding weather-sealing.

The above size and weight comparisons are to some extent incomplete and possibly misleading, as the MX-1 has a lens built in, whereas the E-5 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-5 and their specifications in the Four Thirds Lens Catalog.

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.

Body Specifications

		Camera Model	Camera Width	Camera Height	Camera Depth	Camera Weight	Battery Life	Weather Sealing	Camera Launch	Launch Price	Street Price
1.		Olympus E-5	142 mm	117 mm	75 mm	873 g	750	Y	Sep 2010	EUR 1 499	ebay.com
2.		Pentax MX-1	122 mm	61 mm	51 mm	391 g	290	n	Jan 2013	EUR 499	ebay.com
3.		Canon 60D	145 mm	106 mm	79 mm	755 g	1100	Y	Aug 2010	EUR 1 149	ebay.com
4.		Canon G15	107 mm	76 mm	40 mm	352 g	350	n	Sep 2012	EUR 579	ebay.com
5.		Canon G16	109 mm	76 mm	40 mm	356 g	360	n	Aug 2013	EUR 599	ebay.com
6.		Fujifilm X20	117 mm	70 mm	57 mm	353 g	270	n	Jan 2013	EUR 549	ebay.com
7.		Nikon P7800	119 mm	78 mm	50 mm	399 g	350	n	Sep 2013	EUR 549	ebay.com
8.		Olympus E-3	142 mm	116 mm	75 mm	876 g	750	Y	Oct 2007	EUR 1 749	ebay.com
9.		Olympus E-450	130 mm	91 mm	53 mm	440 g	500	n	Mar 2009	EUR 449	ebay.com
10.		Olympus E-600	130 mm	94 mm	60 mm	535 g	500	n	Aug 2009	EUR 399	ebay.com
11.		Olympus E-620	130 mm	94 mm	60 mm	521 g	500	n	Feb 2009	EUR 599	ebay.com
12.		Olympus E-P3	122 mm	69 mm	34 mm	369 g	330	n	Jun 2011	EUR 699	ebay.com
13.		Olympus E-PL2	114 mm	72 mm	42 mm	362 g	280	n	Jan 2011	EUR 599	ebay.com
14.		Olympus E-PL3	110 mm	64 mm	37 mm	313 g	300	n	Jun 2011	EUR 549	ebay.com
15.		Olympus E-PM1	110 mm	64 mm	34 mm	265 g	330	n	Jun 2011	EUR 449	ebay.com
16.		Olympus XZ-2	113 mm	65 mm	48 mm	346 g	340	n	Sep 2012	EUR 599	ebay.com
17.		Sony A77	143 mm	104 mm	81 mm	732 g	470	Y	Aug 2011	EUR 1 299	ebay.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 MX-1 was launched at a lower price than the E-5, despite having a lens built in. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

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 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Olympus E-5 features a Four Thirds sensor and the Pentax MX-1 a 1/1.7-inch sensor. The sensor area in the MX-1 is 81 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 4.5. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

With 12.2MP, the E-5 offers a slightly higher resolution than the MX-1 (12MP), but the E-5 nevertheless has larger individual pixels (pixel pitch of 4.29μm versus 1.89μm for the MX-1) due to its larger sensor. However, the MX-1 is a much more recent model (by 2 years and 3 months) than the E-5, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.

The Olympus E-5 has a native sensitivity range from ISO 100 to ISO 6400. The corresponding ISO settings for the Pentax MX-1 are ISO 100 to ISO 12800 (no boost).

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. Of the two cameras under review, the E-5 has a notably higher overall DXO score than the MX-1 (overall score 7 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 1.2 bits higher color depth, 0.8 EV of lower dynamic range, and 1.3 stops in additional low light sensitivity. 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.		Olympus E-5	Four Thirds	12.2	4032	3024	720/30p	21.6	10.5	519	56
2.		Pentax MX-1	1/1.7	12.0	4000	3000	1080/30p	20.4	11.3	208	49
3.		Canon 60D	APS-C	17.9	5184	3456	1080/30p	22.2	11.5	813	66
4.		Canon G15	1/1.7	12.0	4000	3000	1080/24p	19.9	11.5	165	46
5.		Canon G16	1/1.7	12.0	4000	3000	1080/60p	21.0	11.7	230	54
6.		Fujifilm X20	2/3	12.0	4000	3000	1080/60p	20.1	10.9	-462	46
7.		Nikon P7800	1/1.7	12.0	4000	3000	1080/30p	21.2	11.7	200	54
8.		Olympus E-3	Four Thirds	10.0	3648	2736	none	21.6	10.5	571	56
9.		Olympus E-450	Four Thirds	10.0	3648	2736	none	21.5	10.5	512	56
10.		Olympus E-600	Four Thirds	12.2	4032	3024	none	21.5	10.3	541	55
11.		Olympus E-620	Four Thirds	12.2	4032	3024	none	21.3	10.3	536	55
12.		Olympus E-P3	Four Thirds	12.2	4032	3024	1080/60i	20.8	10.1	536	51
13.		Olympus E-PL2	Four Thirds	12.2	4032	3024	720/30p	21.4	10.2	573	55
14.		Olympus E-PL3	Four Thirds	12.2	4032	3024	1080/60i	20.9	10.3	499	52
15.		Olympus E-PM1	Four Thirds	12.2	4032	3024	1080/60i	21.0	10.3	499	52
16.		Olympus XZ-2	1/1.7	11.8	3968	2976	1080/30p	20.4	11.3	216	49
17.		Sony A77	APS-C	24.0	6000	4000	1080/60p	24.0	13.2	801	78
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. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the MX-1 provides a better video resolution than the E-5. It can shoot movie footage at 1080/30p, while the Olympus is limited to 720/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the E-5 has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the MX-1 relies on live view and the rear LCD for framing. The following table reports on some other key feature differences and similarities of the Olympus E-5, the Pentax MX-1, and comparable 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.		Olympus E-5	optical	Y	3.0 / 920	swivel	n	1/8000s	5.0/s	Y	Y
2.		Pentax MX-1	none	n	3.0 / 920	tilting	n	1/8000s	1.0/s	Y	Y
3.		Canon 60D	optical	Y	3.0 / 1040	swivel	n	1/8000s	5.3/s	Y	n
4.		Canon G15	optical	n	3.0 / 922	fixed	n	1/4000s	2.1/s	Y	Y
5.		Canon G16	optical	n	3.0 / 922	fixed	n	1/4000s	2.2/s	Y	Y
6.		Fujifilm X20	optical	n	2.8 / 460	fixed	n	1/4000s	12.0/s	Y	Y
7.		Nikon P7800	921	n	3.0 / 921	swivel	n	1/4000s	8.0/s	Y	Y
8.		Olympus E-3	optical	Y	2.5 / 230	swivel	n	1/8000s	5.0/s	Y	Y
9.		Olympus E-450	optical	n	2.7 / 215	fixed	n	1/4000s	3.5/s	Y	n
10.		Olympus E-600	optical	n	2.7 / 230	swivel	n	1/4000s	4.0/s	Y	Y
11.		Olympus E-620	optical	n	2.7 / 230	swivel	n	1/4000s	4.0/s	Y	Y
12.		Olympus E-P3	optional	n	3.0 / 614	fixed	Y	1/4000s	3.0/s	Y	Y
13.		Olympus E-PL2	optional	n	3.0 / 460	fixed	n	1/4000s	3.0/s	Y	Y
14.		Olympus E-PL3	optional	n	3.0 / 460	tilting	n	1/4000s	5.5/s	n	Y
15.		Olympus E-PM1	optional	n	3.0 / 460	fixed	n	1/4000s	5.5/s	n	Y
16.		Olympus XZ-2	optional	n	3.0 / 920	tilting	Y	1/2000s	5.0/s	Y	Y
17.		Sony A77	2359	Y	3.0 / 921	full-flex	n	1/8000s	12.0/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 E-5, but is missing on the MX-1 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 E-5 writes its imaging data to Compact Flash or xD Picture cards, while the MX-1 uses SDXC cards. The E-5 features dual card slots, which can be very useful in case a memory card fails. In contrast, the MX-1 only has one slot.

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 Olympus E-5 and Pentax MX-1 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.		Olympus E-5	Y	stereo / -	-	-	mini	2.0	-	-	-
2.		Pentax MX-1	-	stereo / mono	-	-	mini	2.0	-	-	-
3.		Canon 60D	Y	mono / mono	Y	-	mini	2.0	-	-	-
4.		Canon G15	Y	stereo / mono	-	-	mini	2.0	-	-	-
5.		Canon G16	Y	stereo / mono	-	-	mini	2.0	Y	-	-
6.		Fujifilm X20	Y	stereo / mono	-	-	micro	2.0	-	-	-
7.		Nikon P7800	Y	stereo / mono	Y	-	mini	2.0	-	-	-
8.		Olympus E-3	Y	- / -	-	-	-	2.0	-	-	-
9.		Olympus E-450	Y	- / -	-	-	-	2.0	-	-	-
10.		Olympus E-600	Y	- / -	-	-	-	2.0	-	-	-
11.		Olympus E-620	Y	- / -	-	-	-	2.0	-	-	-
12.		Olympus E-P3	Y	stereo / -	-	-	mini	2.0	-	-	-
13.		Olympus E-PL2	Y	stereo / -	-	-	mini	2.0	-	-	-
14.		Olympus E-PL3	Y	stereo / -	-	-	mini	2.0	-	-	-
15.		Olympus E-PM1	Y	stereo / mono	-	-	mini	2.0	-	-	-
16.		Olympus XZ-2	Y	stereo / mono	-	-	mini	2.0	-	-	-
17.		Sony A77	Y	stereo / mono	Y	-	mini	2.0	-	-	-

It is notable that the E-5 has a hotshoe, while the MX-1 does not. This socket makes it possible to easily attach optional accessories, such as an external flash gun.

Studio photographers will appreciate that the Olympus E-5 (unlike the MX-1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the E-5 and the MX-1 have been discontinued, but can regularly be found used on ebay. Neither of the two has a direct successor, so they represent the end of the respective camera lines from Olympus and Pentax. Further information on the features and operation of the E-5 and MX-1 can be found, respectively, in the Olympus E-5 Manual (free pdf) or the online Pentax MX-1 Manual.

Review summary

So what conclusions can be drawn? Is there a clear favorite between the Olympus E-5 and the Pentax MX-1? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

Reasons to prefer the Olympus E-5:

• Better image quality: Scores markedly higher (7 points) in the DXO overall assessment.
• Richer colors: Generates images with noticeably better colors (1.2 bits more color depth).
• Better low-light sensitivity: Requires less light for good images (1.3 stops ISO advantage).
• Easier framing: Has an optical viewfinder for image composition and settings control.
• Easier setting verification: Features an LCD display on top to control shooting parameters.
• 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 burst: Shoots at higher frequency (5 vs 1 flaps/sec) to capture the decisive moment.
• More flexible: Can take a variety of interchangeable lenses, including specialty optics.
• Longer lasting: Can take more shots (750 versus 290) on a single battery charge.
• Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
• Better lighting: Features a hotshoe and can thus hold and trigger an external flash gun.
• 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.
• More heavily discounted: Has been available for much longer (launched in September 2010).

Arguments in favor of the Pentax MX-1:

• More dynamic range: Captures a broader range of light and dark details (0.8 EV of extra DR).
• Better video: Provides higher definition movie capture (1080/30p vs 720/30p).
• Ready to shoot: Comes with an integrated lens, while the E-5 requires a separate lens.
• More compact: Is smaller (122x61mm vs 142x117mm) and will fit more readily into a bag.
• Less heavy: Has a lower weight even though it has a lens built in (unlike the E-5).
• More affordable: Was introduced at a lower price, despite coming with a built-in lens.
• More modern: Reflects 2 years and 3 months of technical progress since the E-5 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the E-5 is the clear winner of the match-up (15 : 7 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 Olympus E-5 and the Pentax MX-1 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Travel-Zoom 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 remains incomplete and does no justice, for example, to the way the E-5 or the MX-1 perform in practice. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate.

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.		Olympus E-5	4/5	..	..	75/100	4/5	4.5/5	Sep 2010	EUR 1 499	ebay.com
2.		Pentax MX-1	3/5	..	..	74/100	4/5	4/5	Jan 2013	EUR 499	ebay.com
3.		Canon 60D	5/5	+	..	79/100	4/5	4.5/5	Aug 2010	EUR 1 149	ebay.com
4.		Canon G15	4/5	+	..	76/100	4.5/5	4.5/5	Sep 2012	EUR 579	ebay.com
5.		Canon G16	4/5	+	..	..	4.5/5	4.5/5	Aug 2013	EUR 599	ebay.com
6.		Fujifilm X20	4/5	+ +	..	77/100	4.5/5	5/5	Jan 2013	EUR 549	ebay.com
7.		Nikon P7800	3/5	..	..	..	4/5	4.5/5	Sep 2013	EUR 549	ebay.com
8.		Olympus E-3	..	88/100	..	+ +	o	4/5	Oct 2007	EUR 1 749	ebay.com
9.		Olympus E-450	..	..	..	..	4/5	4/5	Mar 2009	EUR 449	ebay.com
10.		Olympus E-600	..	..	..	..	..	4.5/5	Aug 2009	EUR 399	ebay.com
11.		Olympus E-620	3/5	88/100	..	72/100	4.5/5	5/5	Feb 2009	EUR 599	ebay.com
12.		Olympus E-P3	..	83/100	..	74/100	4.5/5	4.5/5	Jun 2011	EUR 699	ebay.com
13.		Olympus E-PL2	3/5	83/100	..	71/100	4.5/5	4.5/5	Jan 2011	EUR 599	ebay.com
14.		Olympus E-PL3	3/5	+ +	..	72/100	4.5/5	4/5	Jun 2011	EUR 549	ebay.com
15.		Olympus E-PM1	..	86/100	..	71/100	4.5/5	4.5/5	Jun 2011	EUR 449	ebay.com
16.		Olympus XZ-2	4/5	+	..	..	4.5/5	4.5/5	Sep 2012	EUR 599	ebay.com
17.		Sony A77	5/5	91/100	..	81/100	..	5/5	Aug 2011	EUR 1 299	ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Other camera comparisons

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