Olympus E-400 vs Pentax K-3 II
The Olympus E-400 and the Pentax K-3 II are two digital cameras that were revealed to the public, respectively, in September 2006 and April 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a Four Thirds (E-400) and an APS-C (K-3 II) sensor. The Olympus has a resolution of 10 megapixels, whereas the Pentax provides 24.1 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 E-400 and the Pentax K-3 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.
The physical size and weight of the Olympus E-400 and the Pentax K-3 II are illustrated 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 size dimensions are rounded to the nearest millimeter.
The K-3 II can be obtained in two different colors (black, silver), while the E-400 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 K-3 II is notably larger (11 percent) than the Olympus E-400. Moreover, the K-3 II is substantially heavier (84 percent) than the E-400. It is noteworthy in this context that the K-3 II is splash and dust-proof, while the E-400 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 would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|Olympus E-400||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Sep 2006||699|
|Pentax K-3 II||5.2 in||3.9 in||3.0 in||28.2 oz||720||Y||Apr 2015||1,099|
|Canon 80D||5.5 in||4.1 in||3.1 in||25.8 oz||960||Y||Feb 2016||1,199|
|Nikon D40X||4.9 in||3.7 in||2.5 in||18.4 oz||520||n||Mar 2007||729|
|Olympus E-P3||4.8 in||2.7 in||1.3 in||13.0 oz||330||n||Jun 2011||799|
|Olympus E-PL2||4.5 in||2.8 in||1.7 in||12.8 oz||280||n||Jan 2011||599|
|Olympus E-450||5.1 in||3.6 in||2.1 in||15.5 oz||500||n||Mar 2009||499|
|Olympus E-620||5.1 in||3.7 in||2.4 in||18.4 oz||500||n||Feb 2009||699|
|Olympus E-420||5.1 in||3.6 in||2.1 in||15.5 oz||500||n||Mar 2008||599|
|Olympus E-410||5.1 in||3.6 in||2.1 in||15.3 oz||500||n||Mar 2007||699|
|Olympus E-510||5.4 in||3.6 in||2.7 in||19.0 oz||750||n||Mar 2007||799|
|Olympus E-500||5.1 in||3.7 in||2.6 in||16.9 oz||750||n||Sep 2005||599|
|Panasonic L10||5.3 in||3.8 in||3.1 in||19.6 oz||450||n||Aug 2007||599|
|Pentax KP||5.2 in||4.0 in||3.0 in||24.8 oz||390||Y||Jan 2017||1,099|
|Pentax K-70||5.0 in||3.7 in||2.9 in||24.3 oz||410||Y||Jun 2016||649|
|Pentax K-3||5.2 in||3.9 in||3.0 in||28.2 oz||560||Y||Oct 2013||1,299|
|Pentax K-5||5.2 in||3.8 in||2.9 in||26.8 oz||740||Y||Sep 2010||1,099|
|Notes: 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-400 was launched at a markedly lower price (by 36 percent) than the K-3 II, 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 sensor inside a digital camera is one of the key determinants of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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 tend to be more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Olympus E-400 features a Four Thirds sensor and the Pentax K-3 II an APS-C sensor. The sensor area in the K-3 II is 63 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 2.0 and 1.5. The sensor in the E-400 has a native 4:3 aspect ratio, while the one in the K-3 II offers a 3:2 aspect.
In terms of underlying technology, both cameras are build around CMOS sensors.
With 24.1MP, the K-3 II offers a higher resolution than the E-400 (10MP), but the K-3 II has smaller individual pixels (pixel pitch of 3.90μm versus 4.74μm for the E-400). Yet, the K-3 II is a much more recent model (by 8 years and 7 months) than the E-400, and its sensor will have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that the K-3 II has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Pentax K-3 II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the K-3 II for good quality output (200 dots per inch) amounts to 30.1 x 20 inches or 76.4 x 50.8 cm, for very good quality (250 dpi) 24.1 x 16 inches or 61.1 x 40.6 cm, and for excellent quality (300 dpi) 20.1 x 13.3 inches or 50.9 x 33.9 cm. The corresponding values for the Olympus E-400 are 18.2 x 13.7 inches or 46.3 x 34.7 cm for good quality, 14.6 x 10.9 inches or 37.1 x 27.8 cm for very good quality, and 12.2 x 9.1 inches or 30.9 x 23.2 cm for excellent quality prints.
Unlike the E-400, the K-3 II has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
The Olympus E-400 has a native sensitivity range from ISO 100 to ISO 1600. The corresponding ISO settings for the Pentax K-3 II are ISO 100 to ISO 51200 (no boost).
For many cameras, data on sensor performance has been reported by DXO Mark. 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"). The following table provides an overview of the physical sensor characteristics, as well as the sensor quality measurements for a selection of comparators.
| DXO |
|Olympus E-400||Four Thirds||10.0||3648||2736||none||..||..||..||..|
|Pentax K-3 II||APS-C||24.1||6016||4000||1080/60i||23.6||13.6||1106||80|
|Olympus E-P3||Four Thirds||12.2||4032||3024||1080/60i||20.8||10.1||536||51|
|Olympus E-PL2||Four Thirds||12.2||4032||3024||720/30p||21.4||10.2||573||55|
|Olympus E-450||Four Thirds||10.0||3648||2736||none||21.5||10.5||512||56|
|Olympus E-620||Four Thirds||12.2||4032||3024||none||21.3||10.3||536||55|
|Olympus E-420||Four Thirds||10.0||3648||2736||none||21.5||10.4||527||56|
|Olympus E-410||Four Thirds||10.0||3648||2736||none||21.1||10.0||494||51|
|Olympus E-510||Four Thirds||10.0||3648||2736||none||21.2||10.0||442||52|
|Olympus E-500||Four Thirds||8.0||3264||2448||none||..||..||..||..|
|Panasonic L10||Four Thirds||10.0||3648||2736||none||21.3||10.8||429||55|
Many modern cameras cannot only take still pictures, but also record videos. The K-3 II indeed provides for movie recording, while the E-400 does not. The highest resolution format that the K-3 II can use is 1080/60i.
Apart from body and sensor, cameras can and do differ across a variety of features. The E-400 and the K-3 II are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The viewfinder in the K-3 II offers a wider field of view (100%) than the one in the E-400 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the K-3 II has a higher magnification (0.63x vs 0.46x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The table below summarizes some of the other core capabilities of the Olympus E-400 and Pentax K-3 II in connection with corresponding information for a sample of similar cameras.
|Pentax K-3 II||optical||Y||3.2||1037||fixed||n||1/8000s||8.3||n||Y|
One difference between the cameras concerns the presence of an on-board flash. The E-400 has one, while the K-3 II does not. While the built-in flash of the E-400 is not very powerful, it can at times be useful as a fill-in light.
The Pentax K-3 II 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-400 writes its imaging data to Compact Flash or xD Picture cards, while the K-3 II uses SDXC cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.
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-400 and Pentax K-3 II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|Pentax K-3 II||Y||mono||mono||Y||Y||mini||3.0||-||-||-|
Studio photographers will appreciate that the Pentax K-3 II (unlike the E-400) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Travel and landscape photographers will find it useful that the K-3 II has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.
The K-3 II is a recent model that features in the current product line-up of Pentax. In contrast, the E-400 has been discontinued (but can be found pre-owned on eBay). As a replacement in the same line of cameras, the E-400 was succeeded by the Olympus E-410. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Olympus and Pentax websites.
So what conclusions can be drawn? Which of the two cameras – the Olympus E-400 or the Pentax K-3 II – has the upper hand? Is one clearly better than the other? Below is a summary of the relative strengths of each of the two contestants.
Advantages of the Olympus E-400:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Less heavy: Is lighter (by 365g or 46 percent) and hence easier to carry around.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (36 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in September 2006).
Reasons to prefer the Pentax K-3 II:
- More detail: Has more megapixels (24.1 vs 10MP), which boosts linear resolution by 58%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better image quality: Is equipped with a larger and more technologically advanced 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.
- Broader imaging potential: Can capture not only stills but also 1080/60i video.
- More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.63x vs 0.46x).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (1037k vs 215k dots).
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (8.3 vs 3 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Gets more shots (720 versus 500) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- Easier geotagging: Features an internal GPS sensor to log localization data.
- 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.
- More modern: Reflects 8 years and 7 months of technical progress since the E-400 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the K-3 II is the clear winner of the contest (23 : 5 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding 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 Olympus E-400 and the Pentax K-3 II place the cameras among the top in their class? Find out in the latest Best DSLR 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 incomplete and does no justice, for example, to the way the E-400 or the K-3 II perform in practice. 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.
This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Olympus E-400||85/100||..||4/5||..||4/5||Sep 2006||699|
|Pentax K-3 II||..||..||5/5||4.5/5||5/5||Apr 2015||1,099|
|Canon 80D||+ +||84/100||4.5/5||4.5/5||4.5/5||Feb 2016||1,199|
|Nikon D40X||79/100||+ +||4/5||o||4/5||Mar 2007||729|
|Olympus E-P3||83/100||74/100||4.5/5||4.5/5||4.5/5||Jun 2011||799|
|Olympus E-PL2||83/100||71/100||4.5/5||4.5/5||4.5/5||Jan 2011||599|
|Olympus E-450||..||..||4/5||..||4/5||Mar 2009||499|
|Olympus E-620||88/100||72/100||4.5/5||o||5/5||Feb 2009||699|
|Olympus E-420||85/100||+ +||4/5||o||4.5/5||Mar 2008||599|
|Olympus E-410||86/100||+ +||4/5||o||4.5/5||Mar 2007||699|
|Olympus E-510||89/100||+ +||3.5/5||o||4.5/5||Mar 2007||799|
|Olympus E-500||76/100||+ +||..||..||..||Sep 2005||599|
|Panasonic L10||85/100||+||3.5/5||o||4/5||Aug 2007||599|
|Pentax KP||..||82/100||5/5||..||4.5/5||Jan 2017||1,099|
|Pentax K-70||..||79/100||4.5/5||4/5||4.5/5||Jun 2016||649|
|Pentax K-3||..||83/100||5/5||4.5/5||5/5||Oct 2013||1,299|
|Pentax K-5||..||83/100||5/5||4.5/5||4.5/5||Sep 2010||1,099|
|Notes: (+ +) 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. 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.
Other camera comparisons
Did this review help to inform your camera decision process? In case you would like to check on the differences and similarities of other camera models, just use the search menu below. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
Specifications: Olympus E-400 vs Pentax K-3 II
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-400||Pentax K-3 II|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Four Thirds lenses||Pentax K mount lenses|
|Launch Date||September 2006||April 2015|
|Launch Price||USD 699||USD 1,099|
|Sensor Specs||Olympus E-400||Pentax K-3 II|
|Sensor Format||Four Thirds Sensor||APS-C Sensor|
|Sensor Size||17.3 x 13.0 mm||23.5 x 15.6 mm|
|Sensor Area||224.9 mm2||366.6 mm2|
|Sensor Diagonal||21.6 mm||28.2 mm|
|Sensor Resolution||10 Megapixels||24.1 Megapixels|
|Image Resolution||3648 x 2736 pixels||6016 x 4000 pixels|
|Pixel Pitch||4.74 μm||3.90 μm|
|Pixel Density||4.44 MP/cm2||6.56 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||no Video||1080/60i Video|
|ISO Setting||100 - 1,600 ISO||100 - 51,200 ISO|
|Image Processor||TruePic||PRIME III|
|DXO Sensor Quality (score)||..||80|
|DXO Color Depth (bits)||..||23.6|
|DXO Dynamic Range (EV)||..||13.6|
|DXO Low Light (ISO)||..||1106|
|Screen Specs||Olympus E-400||Pentax K-3 II|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||100%|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View|
|Rear LCD Size||2.5inch||3.2inch|
|LCD Resolution||215k dots||1037k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Olympus E-400||Pentax K-3 II|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/8000s|
|Continuous Shooting||3 shutter flaps/s||8.3 shutter flaps/s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||CF or XD cards||SDXC cards|
|Second Storage Option||Dual card slots||Dual card slots|
|Connectivity Specs||Olympus E-400||Pentax K-3 II|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 3.0|
|HDMI Port||no HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||no Wifi|
|Geotagging||no internal GPS||GPS built-in|
|Body Specs||Olympus E-400||Pentax K-3 II|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||500 shots per charge||720 shots per charge|
130 x 91 x 53 mm
(5.1 x 3.6 x 2.1 in)
131 x 100 x 77 mm
(5.2 x 3.9 x 3.0 in)
|Camera Weight||435 g (15.3 oz)||800 g (28.2 oz)|
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.