Olympus E-PM1 vs Pentax 645Z
The Olympus PEN E-PM1 and the Pentax 645Z are two digital cameras that were officially introduced, respectively, in June 2011 and April 2014. The E-PM1 is a mirrorless interchangeable lens camera, while the 645Z is a DSLR. The cameras are based on a Four Thirds (E-PM1) 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Olympus PEN E-PM1 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.
The physical size and weight of the Olympus E-PM1 and the Pentax 645Z are illustrated 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.
The E-PM1 can be obtained in six different colors (black, silver, brown, pink, purple, white), while the 645Z 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 Pentax 645Z is considerably larger (159 percent) than the Olympus E-PM1. Moreover, the 645Z is substantially heavier (485 percent) than the E-PM1. It is noteworthy in this context that the 645Z is splash and dust-proof, while the E-PM1 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.
The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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.
|1.||Olympus E-PM1||110 mm||64 mm||34 mm||265 g||330||n||Jun 2011||499||ebay.com|
|2.||Pentax 645Z||156 mm||117 mm||123 mm||1550 g||650||Y||Apr 2014||8,499||amazon.com|
|3.||Canon 5DS||152 mm||116 mm||76 mm||930 g||700||Y||Feb 2015||3,699||amazon.com|
|4.||Canon 5DS R||152 mm||116 mm||76 mm||930 g||700||Y||Feb 2015||3,699||amazon.com|
|5.||Hasselblad X1D||150 mm||98 mm||71 mm||725 g||..||Y||Jun 2016||8,995||ebay.com|
|6.||Leica SL||147 mm||104 mm||39 mm||847 g||400||Y||Oct 2015||7,450||ebay.com|
|7.||Olympus E-PM2||110 mm||64 mm||34 mm||269 g||360||n||Sep 2012||499||ebay.com|
|8.||Olympus XZ-2||113 mm||65 mm||48 mm||346 g||340||n||Sep 2012||599||ebay.com|
|9.||Olympus E-P3||122 mm||69 mm||34 mm||369 g||330||n||Jun 2011||799||ebay.com|
|10.||Olympus E-PL2||114 mm||72 mm||42 mm||362 g||280||n||Jan 2011||599||ebay.com|
|11.||Olympus E-PL3||110 mm||64 mm||37 mm||313 g||300||n||Jun 2011||599||ebay.com|
|12.||Olympus XZ-1||111 mm||65 mm||42 mm||275 g||320||n||Jan 2011||499||ebay.com|
|13.||Olympus E-PL1||115 mm||72 mm||42 mm||334 g||290||n||Feb 2010||599||ebay.com|
|14.||Panasonic GF5||108 mm||67 mm||37 mm||267 g||360||n||Apr 2012||499||ebay.com|
|15.||Panasonic GF3||108 mm||67 mm||32 mm||264 g||300||n||Jun 2011||549||ebay.com|
|16.||Panasonic GF2||113 mm||68 mm||33 mm||310 g||300||n||Nov 2010||549||ebay.com|
|17.||Pentax 645D||156 mm||117 mm||119 mm||1480 g||800||Y||Mar 2010||9,995||ebay.com|
|Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
Any camera decision will obviously take relative prices into account. 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-PM1 was launched at a markedly lower price (by 94 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.
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. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the 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 Olympus E-PM1 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.
With 51.1MP, the 645Z offers a higher resolution than the E-PM1 (12.2MP), but the 645Z nevertheless has larger individual pixels (pixel pitch of 5.30μm versus 4.29μm for the E-PM1) due to its larger sensor. Moreover, the 645Z is a much more recent model (by 2 years and 9 months) than the E-PM1, 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-PM1 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-PM1 has a native sensitivity range from ISO 100 to ISO 12800. 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.
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"). Of the two cameras under consideration, the 645Z offers substantially better image quality than the E-PM1 (overall score 49 points higher). The advantage is based on 5 bits higher color depth, 4.4 EV in additional dynamic range, and 3.2 stops in additional low light sensitivity. The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
|1.||Olympus E-PM1||Four Thirds||12.2||4032||3024||1080/60i||21.0||10.3||499||52|
|2.||Pentax 645Z||Medium Format||51.1||8256||6192||1080/60i||26.0||14.7||4505||101|
|3.||Canon 5DS||Full Frame||50.3||8688||5792||1080/30p||24.7||12.4||2381||87|
|4.||Canon 5DS R||Full Frame||50.3||8688||5792||1080/30p||24.6||12.4||2308||86|
|5.||Hasselblad X1D||Medium Format||51.3||8272||6200||1080/25p||26.2||14.8||4489||102|
|6.||Leica SL||Full Frame||24.0||6000||4000||4K/30p||25.0||13.4||1821||88|
|7.||Olympus E-PM2||Four Thirds||15.9||4608||3456||1080/30p||22.7||12.2||932||72|
|9.||Olympus E-P3||Four Thirds||12.2||4032||3024||1080/60i||20.8||10.1||536||51|
|10.||Olympus E-PL2||Four Thirds||12.2||4032||3024||720/30p||21.4||10.2||573||55|
|11.||Olympus E-PL3||Four Thirds||12.2||4032||3024||1080/60i||20.9||10.3||499||52|
|13.||Olympus E-PL1||Four Thirds||12.2||4032||3024||720/30p||21.5||10.1||487||54|
|14.||Panasonic GF5||Four Thirds||12.0||4000||3000||1080/60i||21.4||11.6||618||61|
|15.||Panasonic GF3||Four Thirds||12.0||4000||3000||1080/60i||20.6||10.0||458||49|
|16.||Panasonic GF2||Four Thirds||12.0||4000||3000||1080/60i||21.2||10.3||506||54|
|17.||Pentax 645D||Medium Format||39.5||7264||5440||none||24.6||12.6||1262||82|
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, and both provide the same movie specifications (1080/60i).
Beyond 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-PM1 relies on live view and the rear LCD for framing. That said, the E-PM1 can be equipped with an optional viewfinder – the VF-2. The following table reports on some other key feature differences and similarities of the Olympus E-PM1, the Pentax 645Z, and comparable cameras.
|1.||Olympus E-PM1||optional||n||3.0 / 460||fixed||n||1/4000s||5.5/s||n||Y|
|2.||Pentax 645Z||optical||Y||3.2 / 1037||tilting||n||1/4000s||3.0/s||n||n|
|3.||Canon 5DS||optical||Y||3.2 / 1040||fixed||n||1/8000s||5.0/s||n||n|
|4.||Canon 5DS R||optical||Y||3.2 / 1040||fixed||n||1/8000s||5.0/s||n||n|
|5.||Hasselblad X1D||2360||n||3.0 / 920||fixed||Y||1/2000s||2.3/s||n||n|
|6.||Leica SL||4400||Y||3.0 / 1040||fixed||Y||1/8000s||11.0/s||n||n|
|7.||Olympus E-PM2||optional||n||3.0 / 460||fixed||Y||1/4000s||8.0/s||n||Y|
|8.||Olympus XZ-2||optional||n||3.0 / 920||tilting||Y||1/2000s||5.0/s||Y||Y|
|9.||Olympus E-P3||optional||n||3.0 / 614||fixed||Y||1/4000s||3.0/s||Y||Y|
|10.||Olympus E-PL2||optional||n||3.0 / 460||fixed||n||1/4000s||3.0/s||Y||Y|
|11.||Olympus E-PL3||optional||n||3.0 / 460||tilting||n||1/4000s||5.5/s||n||Y|
|12.||Olympus XZ-1||optional||n||3.0 / 614||fixed||n||1/2000s||2.0/s||Y||Y|
|13.||Olympus E-PL1||optional||n||2.7 / 230||fixed||n||1/2000s||3.0/s||Y||Y|
|14.||Panasonic GF5||none||n||3.0 / 920||fixed||Y||1/4000s||4.0/s||Y||n|
|15.||Panasonic GF3||none||n||3.0 / 460||fixed||Y||1/4000s||3.2/s||Y||n|
|16.||Panasonic GF2||optional||n||3.0 / 460||fixed||Y||1/4000s||2.6/s||Y||n|
|17.||Pentax 645D||optical||Y||3.0 / 921||fixed||n||1/4000s||1.1/s||n||n|
|Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.|
One feature that differentiates the E-PM1 and the 645Z is in-body image stabilization (IBIS). The E-PM1 reduces the risk of handshake-induced blur with all attached lenses, while the 645Z offers no blur reduction with lenses that themselves do not provide optical image stabilization.
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.
Concerning the storage of imaging data, both the E-PM1 and the 645Z write their files to SDXC cards. The 645Z features dual card slots, which can be very useful in case a memory card fails. In contrast, the E-PM1 only has one slot. The 645Z supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the E-PM1 cannot take advantage of Ultra High Speed SD cards.
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-PM1 and Pentax 645Z and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
Mic / Speaker
|1.||Olympus E-PM1||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|2.||Pentax 645Z||Y||stereo / mono||Y||-||mini||3.0||-||-||-|
|3.||Canon 5DS||Y||mono / mono||Y||-||mini||3.0||-||-||-|
|4.||Canon 5DS R||Y||mono / mono||Y||-||mini||3.0||-||-||-|
|5.||Hasselblad X1D||Y||stereo / mono||Y||Y||mini||3.0||Y||-||-|
|6.||Leica SL||Y||stereo / mono||Y||Y||full||3.0||Y||-||-|
|7.||Olympus E-PM2||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|8.||Olympus XZ-2||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|9.||Olympus E-P3||Y||stereo / -||-||-||mini||2.0||-||-||-|
|10.||Olympus E-PL2||Y||stereo / -||-||-||mini||2.0||-||-||-|
|11.||Olympus E-PL3||Y||stereo / -||-||-||mini||2.0||-||-||-|
|12.||Olympus XZ-1||Y||mono / -||-||-||mini||2.0||-||-||-|
|13.||Olympus E-PL1||Y||stereo / -||-||-||mini||2.0||-||-||-|
|14.||Panasonic GF5||-||stereo / mono||-||-||mini||2.0||-||-||-|
|15.||Panasonic GF3||-||stereo / mono||-||-||mini||2.0||-||-||-|
|16.||Panasonic GF2||Y||stereo / mono||-||-||mini||2.0||-||-||-|
|17.||Pentax 645D||Y||stereo / -||-||-||-||2.0||-||-||-|
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-PM1 does not feature such a mic input.
Studio photographers will appreciate that the Pentax 645Z (unlike the E-PM1) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
The 645Z is a recent model that features in the current product line-up of Pentax. In contrast, the E-PM1 has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the E-PM1 was succeeded by the Olympus E-PM2. Further information on the features and operation of the E-PM1 and 645Z can be found, respectively, in the Olympus E-PM1 Manual (free pdf) or the online Pentax 645Z Manual.
So what is the bottom line? Is the Olympus E-PM1 better than the Pentax 645Z or vice versa? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Olympus PEN E-PM1:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Faster burst: Shoots at higher frequency (5.5 vs 3 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (110x64mm vs 156x117mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 1285g or 83 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.
- More affordable: Was introduced into a lower priced category (94 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in June 2011).
Reasons to prefer 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 (49 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (5 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (4.4 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (3.2 stops ISO advantage).
- 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 330) 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 2 years and 9 months of technical progress since the E-PM1 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the 645Z is the clear winner of the contest (20 : 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 wildlife photographer will view the differences between cameras in a way that diverges from the perspective of a family photog, and a person interested in architecture has distinct needs from a sports 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-PM1 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 says little about, for example, the shooting experience and imaging performance of the E-PM1 and the 645Z 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.
This is why hands-on reviews by experts are important. 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.
|1.||Olympus E-PM1||..||86/100||..||71/100||4.5/5||4.5/5||Jun 2011||499||ebay.com|
|2.||Pentax 645Z||5/5||..||..||..||4.5/5||5/5||Apr 2014||8,499||amazon.com|
|3.||Canon 5DS||..||+||..||83/100||4.5/5||4.5/5||Feb 2015||3,699||amazon.com|
|4.||Canon 5DS R||5/5||+||..||83/100||5/5||4.5/5||Feb 2015||3,699||amazon.com|
|5.||Hasselblad X1D||..||o||..||81/100||..||4/5||Jun 2016||8,995||ebay.com|
|6.||Leica SL||4/5||..||4/5||84/100||4.5/5||4/5||Oct 2015||7,450||ebay.com|
|7.||Olympus E-PM2||3/5||..||..||77/100||5/5||4.5/5||Sep 2012||499||ebay.com|
|8.||Olympus XZ-2||4/5||+||..||..||4.5/5||4.5/5||Sep 2012||599||ebay.com|
|9.||Olympus E-P3||..||83/100||..||74/100||4.5/5||4.5/5||Jun 2011||799||ebay.com|
|10.||Olympus E-PL2||3/5||83/100||..||71/100||4.5/5||4.5/5||Jan 2011||599||ebay.com|
|11.||Olympus E-PL3||3/5||+ +||..||72/100||4.5/5||4/5||Jun 2011||599||ebay.com|
|12.||Olympus XZ-1||4/5||..||..||74/100||4.5/5||4.5/5||Jan 2011||499||ebay.com|
|13.||Olympus E-PL1||..||86/100||..||69/100||4/5||4.5/5||Feb 2010||599||ebay.com|
|14.||Panasonic GF5||3/5||..||..||..||4.5/5||4.5/5||Apr 2012||499||ebay.com|
|15.||Panasonic GF3||3/5||82/100||..||71/100||4.5/5||4/5||Jun 2011||549||ebay.com|
|16.||Panasonic GF2||3/5||82/100||..||70/100||4.5/5||4.5/5||Nov 2010||549||ebay.com|
|17.||Pentax 645D||5/5||..||..||..||..||..||Mar 2010||9,995||ebay.com|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The above review scores should be interpreted 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, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
Other camera comparisons
Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon G16 vs Olympus E-PM1
- Canon M3 vs Olympus E-PM1
- Canon SX710 vs Pentax 645Z
- Canon T6s vs Pentax 645Z
- Leica V-LUX 5 vs Pentax 645Z
- Nikon D3X vs Olympus E-PM1
- Nikon D40 vs Olympus E-PM1
- Nikon Df vs Olympus E-PM1
- Olympus E-600 vs Pentax 645Z
- Olympus E-PM1 vs Panasonic GF1
- Panasonic TZ90 vs Pentax 645Z
- Pentax 645Z vs Sony NEX-5T
Specifications: Olympus E-PM1 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 Model||Olympus E-PM1||Pentax 645Z|
|Camera Type||Mirrorless system camera||Digital single lens reflex|
|Camera Lens||Micro Four Thirds lenses||Pentax 645 mount lenses|
|Launch Date||June 2011||April 2014|
|Launch Price||USD 499||USD 8,499|
|Sensor Specs||Olympus E-PM1||Pentax 645Z|
|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|
|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||1080/60i Video||1080/60i Video|
|ISO Setting||100 - 12,800 ISO||100 - 204,800 ISO|
|Image Processor||TruePic VI||PRIME III|
|DXO Sensor Quality (score)||52||101|
|DXO Color Depth (bits)||21.0||26.0|
|DXO Dynamic Range (EV)||10.3||14.7|
|DXO Low Light (ISO)||499||4505|
|Screen Specs||Olympus E-PM1||Pentax 645Z|
|Viewfinder Type||Viewfinder optional||Optical viewfinder|
|Viewfinder Field of View||98%|
|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-PM1||Pentax 645Z|
|Focus System||Contrast-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/4000s|
|Continuous Shooting||5.5 shutter flaps/s||3 shutter flaps/s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||In-body stabilization||Lens stabilization only|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Single or Dual Card Slots||Single card slot||Dual card slots|
|UHS card support||no||UHS-I|
|Connectivity Specs||Olympus E-PM1||Pentax 645Z|
|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-PM1||Pentax 645Z|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||330 shots per charge||650 shots per charge|
110 x 64 x 34 mm
(4.3 x 2.5 x 1.3 in)
156 x 117 x 123 mm
(6.1 x 4.6 x 4.8 in)
|Camera Weight||265 g (9.3 oz)||1550 g (54.7 oz)|
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