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Olympus E-PL2 vs Pentax 645Z

The Olympus PEN E-PL2 and the Pentax 645Z are two digital cameras that were revealed to the public, respectively, in January 2011 and April 2014. The E-PL2 is a mirrorless interchangeable lens camera, while the 645Z is a DSLR. The cameras are based on a Four Thirds (E-PL2) and a medium format (645Z) sensor. The Olympus has a resolution of 12.2 megapixels, whereas the Pentax provides 51.1 MP.

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

Headline Specifications
Olympus E-PL2
versus
Pentax 645Z
Olympus E-PL2   Pentax 645Z
Mirrorless system camera Digital single lens reflex
Micro Four Thirds lenses Pentax 645 mount lenses
12.2 MP – Four Thirds sensor 51.1 MP – Medium Format sensor
720/30p Video 1080/60i Video
ISO 200-6,400 ISO 100-204,800
Viewfinder optional Optical viewfinder
3.0" LCD – 460k dots 3.2" LCD – 1037k dots
Fixed screen (not touch-sensitive) Tilting screen (no touchscreen)
3 shutter flaps per second 3 shutter flaps per second
In-body stabilizationLens stabilization only
not weather sealedWeathersealed body
280 shots per battery charge650 shots per battery charge
114 x 72 x 42 mm, 362 g 156 x 117 x 123 mm, 1550 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-PL2 and the Pentax 645Z? 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 Olympus E-PL2 and the Pentax 645Z 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-PL2 can be obtained in four different colors (black, silver, red, white), while the 645Z is only available in black.

Size Olympus E-PL2 vs Pentax 645Z
Compare E-PL2 versus 645Z top
Comparison E-PL2 or 645Z rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Pentax 645Z is considerably larger (122 percent) than the Olympus E-PL2. Moreover, the 645Z is substantially heavier (328 percent) than the E-PL2. It is noteworthy in this context that the 645Z is splash and dust-proof, while the E-PL2 does not feature any corresponding weather-sealing.

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 E-PL2 gets 280 shots out of its Olympus BLS-5 battery, while the 645Z can take 650 images on a single charge of its Pentax D-LI90 power pack.

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, you can use the CAM-parator app to select your camera combination among a large number of options.

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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.
 
Olympus E-PL2 114 mm 72 mm 42 mm 362 g 280 n Jan 2011 599ebay.com
2.
 
Pentax 645Z 156 mm 117 mm 123 mm 1550 g 650 Y Apr 2014 8,499ebay.com
3.
 
Canon 5DS 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
4.
 
Canon 5DS R 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699ebay.com
5.
 
Hasselblad X1D 150 mm 98 mm 71 mm 725 g .. Y Jun 2016 8,995ebay.com
6.
 
Leica SL 147 mm 104 mm 39 mm 847 g 400 Y Oct 2015 7,450ebay.com
7.
 
Olympus E-PL5 111 mm 64 mm 38 mm 325 g 360 n Sep 2012 599ebay.com
8.
 
Olympus XZ-2 113 mm 65 mm 48 mm 346 g 340 n Sep 2012 599ebay.com
9.
 
Olympus E-P3 122 mm 69 mm 34 mm 369 g 330 n Jun 2011 799ebay.com
10.
 
Olympus E-PL3 110 mm 64 mm 37 mm 313 g 300 n Jun 2011 599ebay.com
11.
 
Olympus E-PM1 110 mm 64 mm 34 mm 265 g 330 n Jun 2011 499ebay.com
12.
 
Olympus E-PL1 115 mm 72 mm 42 mm 334 g 290 n Feb 2010 599ebay.com
13.
 
Olympus E-P1 121 mm 70 mm 36 mm 355 g 300 n Jun 2009 799ebay.com
14.
 
Olympus E-P2 121 mm 70 mm 36 mm 355 g 300 n Nov 2009 799ebay.com
15.
 
Panasonic G10 124 mm 84 mm 74 mm 388 g 380 n Mar 2010 499ebay.com
16.
 
Panasonic GF2 113 mm 68 mm 33 mm 310 g 300 n Nov 2010 549ebay.com
17.
 
Pentax 645D 156 mm 117 mm 119 mm 1480 g 800 Y Mar 2010 9,995ebay.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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The price is, of course, an important factor in any camera decision. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The E-PL2 was launched at a markedly lower price (by 93 percent) than the 645Z, 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 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. 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 Olympus E-PL2 features a Four Thirds sensor and the Pentax 645Z a medium format sensor. The sensor area in the 645Z is 539 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 0.79. Both cameras feature a native aspect ratio (sensor width to sensor height) of 4:3.

Olympus E-PL2 and Pentax 645Z sensor measures

With 51.1MP, the 645Z offers a higher resolution than the E-PL2 (12.2MP), but the 645Z nevertheless has larger individual pixels (pixel pitch of 5.30μm versus 4.29μm for the E-PL2) due to its larger sensor. Moreover, the 645Z is a much more recent model (by 3 years and 3 months) than the E-PL2, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the 645Z has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Pentax 645Z implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the 645Z for good quality output (200 dots per inch) amounts to 41.3 x 31 inches or 104.9 x 78.6 cm, for very good quality (250 dpi) 33 x 24.8 inches or 83.9 x 62.9 cm, and for excellent quality (300 dpi) 27.5 x 20.6 inches or 69.9 x 52.4 cm. The corresponding values for the Olympus E-PL2 are 20.2 x 15.1 inches or 51.2 x 38.4 cm for good quality, 16.1 x 12.1 inches or 41 x 30.7 cm for very good quality, and 13.4 x 10.1 inches or 34.1 x 25.6 cm for excellent quality prints.

The Olympus PEN E-PL2 has a native sensitivity range from ISO 200 to ISO 6400. The corresponding ISO settings for the Pentax 645Z are ISO 100 to ISO 204800 (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.

E-PL2 versus 645Z MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. 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"). Of the two cameras under consideration, the 645Z offers substantially better image quality than the E-PL2 (overall score 46 points higher). The advantage is based on 4.6 bits higher color depth, 4.5 EV in additional dynamic range, and 3 stops in additional low light sensitivity. 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.
 
Olympus E-PL2 Four Thirds 12.2 4032 3024720/30p21.410.257355
2.
 
Pentax 645Z Medium Format 51.1 8256 61921080/60i26.014.74505101
3.
 
Canon 5DS Full Frame 50.3 8688 57921080/30p24.712.4238187
4.
 
Canon 5DS R Full Frame 50.3 8688 57921080/30p24.612.4230886
5.
 
Hasselblad X1D Medium Format 51.3 8272 62001080/25p26.214.84489102
6.
 
Leica SL Full Frame 24.0 6000 40004K/30p25.013.4182188
7.
 
Olympus E-PL5 Four Thirds 15.9 4608 34561080/30p22.812.388972
8.
 
Olympus XZ-2 1/1.7 11.8 3968 29761080/30p20.411.321649
9.
 
Olympus E-P3 Four Thirds 12.2 4032 30241080/60i20.810.153651
10.
 
Olympus E-PL3 Four Thirds 12.2 4032 30241080/60i20.910.349952
11.
 
Olympus E-PM1 Four Thirds 12.2 4032 30241080/60i21.010.349952
12.
 
Olympus E-PL1 Four Thirds 12.2 4032 3024720/30p21.510.148754
13.
 
Olympus E-P1 Four Thirds 12.2 4032 3024720/30p21.410.453655
14.
 
Olympus E-P2 Four Thirds 12.2 4032 3024720/30p21.510.450556
15.
 
Panasonic G10 Four Thirds 12.0 4000 3000720/30p21.210.141152
16.
 
Panasonic GF2 Four Thirds 12.0 4000 30001080/60i21.210.350654
17.
 
Pentax 645D Medium Format 39.5 7264 5440none24.612.6126282
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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 645Z provides a better video resolution than the E-PL2. It can shoot movie footage at 1080/60i, while the Olympus is limited to 720/30p.

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Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the 645Z has an optical viewfinder, which can be very useful when shooting in bright sunlight. In contrast, the E-PL2 relies on live view and the rear LCD for framing. That said, the E-PL2 can be equipped with an optional viewfinder – the VF-2. The table below summarizes some of the other core capabilities of the Olympus E-PL2 and Pentax 645Z in connection with corresponding information for a sample of similar 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.
 
Olympus E-PL2optional n3.0 / 460 fixed n 1/4000s 3.0/s Y Y
2.
 
Pentax 645Zoptical Y3.2 / 1037 tilting n 1/4000s 3.0/s n n
3.
 
Canon 5DSoptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
4.
 
Canon 5DS Roptical Y3.2 / 1040 fixed n 1/8000s 5.0/s n n
5.
 
Hasselblad X1D2360 n3.0 / 920 fixed Y 1/2000s 2.3/s n n
6.
 
Leica SL4400 Y3.0 / 1040 fixed Y 1/8000s 11.0/s n n
7.
 
Olympus E-PL5optional n3.0 / 460 tilting Y 1/4000s 8.0/s n Y
8.
 
Olympus XZ-2optional n3.0 / 920 tilting Y 1/2000s 5.0/s Y Y
9.
 
Olympus E-P3optional n3.0 / 614 fixed Y 1/4000s 3.0/s Y Y
10.
 
Olympus E-PL3optional n3.0 / 460 tilting n 1/4000s 5.5/s n Y
11.
 
Olympus E-PM1optional n3.0 / 460 fixed n 1/4000s 5.5/s n Y
12.
 
Olympus E-PL1optional n2.7 / 230 fixed n 1/2000s 3.0/s Y Y
13.
 
Olympus E-P1none n3.0 / 230 fixed n 1/4000s 3.0/s n Y
14.
 
Olympus E-P2optional n3.0 / 230 fixed n 1/4000s 3.0/s n Y
15.
 
Panasonic G10202 n3.0 / 460 fixed n 1/4000s 2.6/s Y n
16.
 
Panasonic GF2optional n3.0 / 460 fixed Y 1/4000s 2.6/s Y n
17.
 
Pentax 645Doptical Y3.0 / 921 fixed n 1/4000s 1.1/s n n
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
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One difference between the cameras concerns the presence of an on-board flash. The E-PL2 has one, while the 645Z does not. While the built-in flash of the E-PL2 is not very powerful, it can at times be useful as a fill-in light.

The Pentax 645Z has 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.

The E-PL2 writes its imaging data to SDHC cards, while the 645Z uses SDXC cards. The 645Z features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-PL2 only has one slot. The 645Z supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the E-PL2 cannot take advantage of Ultra High Speed SD 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 Olympus PEN E-PL2 and Pentax 645Z 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.
 
Olympus E-PL2Ystereo / ---mini2.0---
2.
 
Pentax 645ZYstereo / monoY-mini3.0---
3.
 
Canon 5DSYmono / monoY-mini3.0---
4.
 
Canon 5DS RYmono / monoY-mini3.0---
5.
 
Hasselblad X1DYstereo / monoYYmini3.0Y--
6.
 
Leica SLYstereo / monoYYfull3.0Y--
7.
 
Olympus E-PL5Ystereo / mono--mini2.0---
8.
 
Olympus XZ-2Ystereo / mono--mini2.0---
9.
 
Olympus E-P3Ystereo / ---mini2.0---
10.
 
Olympus E-PL3Ystereo / ---mini2.0---
11.
 
Olympus E-PM1Ystereo / mono--mini2.0---
12.
 
Olympus E-PL1Ystereo / ---mini2.0---
13.
 
Olympus E-P1Ystereo / ---mini2.0---
14.
 
Olympus E-P2Ystereo / ---mini2.0---
15.
 
Panasonic G10Ymono / ---mini2.0---
16.
 
Panasonic GF2Ystereo / mono--mini2.0---
17.
 
Pentax 645DYstereo / ----2.0---
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It is notable that the 645Z has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The E-PL2 does not feature such a mic input.

Studio photographers will appreciate that the Pentax 645Z (unlike the E-PL2) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the E-PL2 and the 645Z have been discontinued, but can regularly be found used on ebay. The E-PL2 was replaced by the Olympus E-PL3, while the 645Z does not have a direct successor. Further information on the features and operation of the E-PL2 and 645Z can be found, respectively, in the Olympus E-PL2 Manual (free pdf) or the online Pentax 645Z Manual.

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Review summary

So what is the bottom line? Which of the two cameras – the Olympus E-PL2 or the Pentax 645Z – has the upper hand? Is one clearly better than the other? The listing below highlights the relative strengths of the two models.

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Advantages of the Olympus PEN E-PL2:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • More compact: Is smaller (114x72mm vs 156x117mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 1188g or 77 percent) and hence easier to carry around.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (93 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in January 2011).

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Arguments in favor of the Pentax 645Z:

  • More detail: Has more megapixels (51.1 vs 12.2MP), which boosts linear resolution by 105%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (46 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (4.6 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (4.5 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (3 stops ISO advantage).
  • Better video: Provides higher definition movie capture (1080/60i vs 720/30p).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • Easier framing: Has an optical viewfinder for image composition and settings control.
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1037k vs 460k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Gets more shots (650 versus 280) out of a single battery charge.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
  • 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: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 3 years and 3 months of technical progress since the E-PL2 launch.

If the number of relative strengths (bullet points above) is taken as a guide, the 645Z is the clear winner of the contest (21 : 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.

E-PL2 08:21 645Z

How about other alternatives? Do the specifications of the Olympus E-PL2 and the Pentax 645Z place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the E-PL2 or the 645Z. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.

Expert reviews

This is where reviews by experts come in. The adjacent summary-table relays the overall verdicts of several of the most popular 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.

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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.
 
Olympus E-PL23/583/100..71/1004.5/54.5/5 Jan 2011 599ebay.com
2.
 
Pentax 645Z5/5..3.5/5..4.5/55/5 Apr 2014 8,499ebay.com
3.
 
Canon 5DS..+..83/1004.5/54.5/5 Feb 2015 3,699ebay.com
4.
 
Canon 5DS R5/5+..83/1005/54.5/5 Feb 2015 3,699ebay.com
5.
 
Hasselblad X1D..o..81/100..4/5 Jun 2016 8,995ebay.com
6.
 
Leica SL4/5..4/584/1004.5/54/5 Oct 2015 7,450ebay.com
7.
 
Olympus E-PL53/5+ +....4.5/54.5/5 Sep 2012 599ebay.com
8.
 
Olympus XZ-24/5+....4.5/54.5/5 Sep 2012 599ebay.com
9.
 
Olympus E-P3..83/100..74/1004.5/54.5/5 Jun 2011 799ebay.com
10.
 
Olympus E-PL33/5+ +..72/1004.5/54/5 Jun 2011 599ebay.com
11.
 
Olympus E-PM1..86/100..71/1004.5/54.5/5 Jun 2011 499ebay.com
12.
 
Olympus E-PL1..86/100..69/1004/54.5/5 Feb 2010 599ebay.com
13.
 
Olympus E-P1..+..66/1004/54.5/5 Jun 2009 799ebay.com
14.
 
Olympus E-P23/5+..69/1004/54.5/5 Nov 2009 799ebay.com
15.
 
Panasonic G103/5....70/1004/54/5 Mar 2010 499ebay.com
16.
 
Panasonic GF23/582/100..70/1004.5/54.5/5 Nov 2010 549ebay.com
17.
 
Pentax 645D5/5.......... Mar 2010 9,995ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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The above review scores should be interpreted 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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

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

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    Specifications: Olympus E-PL2 vs Pentax 645Z

    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 Olympus E-PL2 Pentax 645Z
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Micro Four Thirds lenses Pentax 645 mount lenses
    Launch Date January 2011 April 2014
    Launch Price USD 599 USD 8,499
    Sensor Specs Olympus E-PL2 Pentax 645Z
    Sensor Technology CMOS CMOS
    Sensor Format Four Thirds Sensor Medium Format Sensor
    Sensor Size 17.3 x 13.0 mm 43.8 x 32.8 mm
    Sensor Area 224.9 mm2 1436.64 mm2
    Sensor Diagonal 21.6 mm 54.7 mm
    Crop Factor 2.0x 0.79x
    Sensor Resolution 12.2 Megapixels 51.1 Megapixels
    Image Resolution 4032 x 3024 pixels 8256 x 6192 pixels
    Pixel Pitch 4.29 μm 5.30 μm
    Pixel Density 5.42 MP/cm2 3.56 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 720/30p Video 1080/60i Video
    ISO Setting 200 - 6,400 ISO 100 - 204,800 ISO
    Image Processor Truepic V PRIME III
    DXO Sensor Quality (score) 55 101
    DXO Color Depth (bits) 21.4 26.0
    DXO Dynamic Range (EV) 10.2 14.7
    DXO Low Light (ISO) 573 4505
    Screen Specs Olympus E-PL2 Pentax 645Z
    Viewfinder Type Viewfinder optional Optical viewfinder
    Viewfinder Field of View 98%
    Viewfinder Magnification 0.78x
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 460k dots 1037k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Olympus E-PL2 Pentax 645Z
    Focus System Contrast-detect AF Phase-detect AF
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/4000s
    Continuous Shooting 3 shutter flaps/s 3 shutter flaps/s
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDHC cards SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support no UHS-I
    Connectivity Specs Olympus E-PL2 Pentax 645Z
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    USB Connector USB 2.0 USB 3.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi no Wifi
    Body Specs Olympus E-PL2 Pentax 645Z
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Olympus BLS-5 Pentax D-LI90
    Battery Life (CIPA)280 shots per charge650 shots per charge
    Body Dimensions 114 x 72 x 42 mm
    (4.5 x 2.8 x 1.7 in)
    156 x 117 x 123 mm
    (6.1 x 4.6 x 4.8 in)
    Camera Weight 362 g (12.8 oz) 1550 g (54.7 oz)
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