Nikon D40 vs Olympus E-PM1
The Nikon D40 and the Olympus PEN E-PM1 are two digital cameras that were officially introduced, respectively, in November 2006 and June 2011. The D40 is a DSLR, while the E-PM1 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D40) and a Four Thirds (E-PM1) sensor. The Nikon has a resolution of 6 megapixels, whereas the Olympus provides 12.2 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Nikon D40||Olympus E-PM1|
|Digital single lens reflex||Mirrorless system camera|
|Nikon F mount lenses||Micro Four Thirds lenses|
|6 MP, APS-C Sensor||12.2 MP, Four Thirds Sensor|
|no Video||1080/60i Video|
|ISO 200-1600 (200-3200)||ISO 100-12800|
|Optical viewfinder||Viewfinder optional|
|2.5" LCD, 230k dots||3.0" LCD, 460k dots|
|Fixed screen (not touch-sensitive)||Fixed screen (not touch-sensitive)|
|2.5 shutter flaps per second||5.5 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|470 shots per battery charge||330 shots per battery charge|
|124 x 94 x 64 mm, 522 g||110 x 64 x 34 mm, 265 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D40 and the Olympus PEN E-PM1? 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 side-by-side display below illustrates the physical size and weight of the Nikon D40 and the Olympus E-PM1. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. 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 D40 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-PM1 is considerably smaller (40 percent) than the Nikon D40. Moreover, the E-PM1 is substantially lighter (49 percent) than the D40. In this context, it is worth noting that neither the D40 nor the E-PM1 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. A larger imaging sensor will tend to go along with bigger and heavier lenses, although exceptions exist. You can compare the optics available for the two cameras in the Nikon Lens Catalog (D40) and the Micro Four Thirds Lens Catalog (E-PM1). Mirrorless cameras, such as the E-PM1, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.
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, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.
|Nikon D40»||124 mm||94 mm||64 mm||522 g||470||n||Nov 2006||499||Nikon D40|
|Olympus E-PM1«||110 mm||64 mm||34 mm||265 g||330||n||Jun 2011||499||Olympus E-PM1|
|Nikon D3400« »||124 mm||98 mm||76 mm||445 g||1200||n||Aug 2016||499||Nikon D3400|
|Nikon D3300« »||124 mm||98 mm||76 mm||430 g||700||n||Jan 2014||499||Nikon D3300|
|Nikon D3200« »||125 mm||96 mm||77 mm||505 g||540||n||Apr 2012||599||Nikon D3200|
|Nikon D3100« »||124 mm||96 mm||75 mm||505 g||550||n||Aug 2010||599||Nikon D3100|
|Nikon D3000« »||126 mm||97 mm||64 mm||536 g||500||n||Jul 2009||599||Nikon D3000|
|Nikon D40X« »||124 mm||94 mm||64 mm||522 g||520||n||Mar 2007||729||Nikon D40X|
|Nikon D80« »||132 mm||103 mm||77 mm||668 g||600||n||Aug 2006||999||Nikon D80|
|Nikon D50« »||133 mm||102 mm||76 mm||620 g||400||n||Apr 2005||749||Nikon D50|
|Nikon D70s« »||140 mm||111 mm||78 mm||679 g||500||n||Apr 2005||899||Nikon D70s|
|Olympus E-PM2« »||110 mm||64 mm||34 mm||269 g||360||n||Sep 2012||499||Olympus E-PM2|
|Olympus E-P3« »||122 mm||69 mm||34 mm||369 g||330||n||Jun 2011||799||Olympus E-P3|
|Olympus E-PL2« »||114 mm||72 mm||42 mm||362 g||280||n||Jan 2011||599||Olympus E-PL2|
|Olympus E-PL3« »||110 mm||64 mm||37 mm||313 g||300||n||Jun 2011||599||Olympus E-PL3|
|Olympus E-PL1« »||115 mm||72 mm||42 mm||334 g||290||n||Feb 2010||599||Olympus E-PL1|
|Panasonic L10« »||135 mm||96 mm||78 mm||556 g||450||n||Aug 2007||599||Panasonic L10|
|Note: Measurements and pricing do not include easily detachable parts, such as interchangeable lenses or optional viewfinders.|
Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The two cameras under review were launched at the same price and fall into the same 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.
The size of the sensor inside a digital camera is one of the key determinants 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. 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 more expensive and lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Nikon D40 features an APS-C sensor and the Olympus E-PM1 a Four Thirds sensor. The sensor area in the E-PM1 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 D40 has a native 3:2 aspect ratio, while the one in the E-PM1 offers a 4:3 aspect.
Despite having a smaller sensor, the E-PM1 offers a higher resolution of 12.2 megapixels, compared with 6 MP of the D40. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.29μm versus 7.85μm for the D40). However, it should be noted that the E-PM1 is much more recent (by 4 years and 7 months) than the D40, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
The resolution advantage of the Olympus E-PM1 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the E-PM1 for good quality output (200 dots per inch) amounts to 20.2 x 15.1 inch or 51.2 x 38.4 cm, for very good quality (250 dpi) 16.1 x 12.1 inch or 41 x 30.7 cm, and for excellent quality (300 dpi) 13.4 x 10.1 inch or 34.1 x 25.6 cm. The corresponding values for the Nikon D40 are 15 x 10 inch or 38.2 x 25.4 cm for good quality, 12 x 8 inch or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inch or 25.5 x 16.9 cm for excellent quality prints.
The Nikon D40 has a native sensitivity range from ISO 200 to ISO 1600, which can be extended to ISO 200-3200. The corresponding ISO settings for the Olympus PEN E-PM1 are ISO 100 to ISO 12800 (no boost).
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 review, the D40 has a notably higher overall DXO score than the E-PM1 (overall score 4 points higher), which gives it an advantage in terms of imaging quality. 0.7 EV in additional dynamic range, and 0.2 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.
|Nikon D40||APS-C||6.0||3008||2000||none||21.0||11.0||561||56||Nikon D40|
|Olympus E-PM1||Four Thirds||12.2||4032||3024||1080/60i||21.0||10.3||499||52||Olympus E-PM1|
|Nikon D3400||APS-C||24.0||6000||4000||1080/60p||24.8||13.9||1192||86||Nikon D3400|
|Nikon D3300||APS-C||24.0||6000||4000||1080/60p||24.3||12.8||1385||82||Nikon D3300|
|Nikon D3200||APS-C||24.1||6016||4000||1080/30p||24.1||13.2||1131||81||Nikon D3200|
|Nikon D3100||APS-C||14.2||4608||3072||1080/24p||22.5||11.3||919||67||Nikon D3100|
|Nikon D3000||APS-C||10.0||3872||2592||none||22.3||11.1||563||62||Nikon D3000|
|Nikon D40X||APS-C||10.0||3872||2592||none||22.4||11.4||516||63||Nikon D40X|
|Nikon D80||APS-C||10.0||3872||2592||none||22.1||11.2||524||61||Nikon D80|
|Nikon D50||APS-C||6.0||3008||2000||none||20.9||10.8||560||55||Nikon D50|
|Nikon D70s||APS-C||6.0||3008||2000||none||20.4||10.3||529||50||Nikon D70s|
|Olympus E-PM2||Four Thirds||15.9||4608||3456||1080/30p||22.7||12.2||932||72||Olympus E-PM2|
|Olympus E-P3||Four Thirds||12.2||4032||3024||1080/60i||20.8||10.1||536||51||Olympus E-P3|
|Olympus E-PL2||Four Thirds||12.2||4032||3024||720/30p||21.4||10.2||573||55||Olympus E-PL2|
|Olympus E-PL3||Four Thirds||12.2||4032||3024||1080/60i||20.9||10.3||499||52||Olympus E-PL3|
|Olympus E-PL1||Four Thirds||12.2||4032||3024||720/30p||21.5||10.1||487||54||Olympus E-PL1|
|Panasonic L10||Four Thirds||10.0||3648||2736||none||21.3||10.8||429||55||Panasonic L10|
Many modern cameras are not only capable of taking still images, but can also record movies. The E-PM1 indeed provides for movie recording, while the D40 does not. The highest resolution format that the E-PM1 can use is 1080/60i.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the D40 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 table below summarizes some of the other core capabilities of the Nikon D40 and Olympus E-PM1 in connection with corresponding information for a sample of similar cameras.
|Nikon D40||optical||n||2.5||230||fixed||n||1/4000s||2.5||Y||n||Nikon D40|
|Olympus E-PM1||optional||n||3.0||460||fixed||n||1/4000s||5.5||n||Y||Olympus E-PM1|
|Nikon D3400||optical||n||3.0||921||fixed||n||1/4000s||5.0||Y||n||Nikon D3400|
|Nikon D3300||optical||n||3.0||921||fixed||n||1/4000s||5.0||Y||n||Nikon D3300|
|Nikon D3200||optical||n||3.0||921||fixed||n||1/4000s||4.0||Y||n||Nikon D3200|
|Nikon D3100||optical||n||3.0||230||fixed||n||1/4000s||3.0||Y||n||Nikon D3100|
|Nikon D3000||optical||n||3.0||230||fixed||n||1/4000s||3.0||Y||n||Nikon D3000|
|Nikon D40X||optical||n||2.5||230||fixed||n||1/4000s||3.0||Y||n||Nikon D40X|
|Nikon D80||optical||n||2.5||230||fixed||n||1/4000s||3.0||Y||n||Nikon D80|
|Nikon D50||optical||n||2.0||130||fixed||n||1/4000s||2.5||Y||n||Nikon D50|
|Nikon D70s||optical||n||2.0||130||fixed||n||1/8000s||3.0||Y||n||Nikon D70s|
|Olympus E-PM2||optional||n||3.0||460||fixed||Y||1/4000s||8.0||n||Y||Olympus E-PM2|
|Olympus E-P3||optional||n||3.0||614||fixed||Y||1/4000s||3.0||Y||Y||Olympus E-P3|
|Olympus E-PL2||optional||n||3.0||460||fixed||n||1/4000s||3.0||Y||Y||Olympus E-PL2|
|Olympus E-PL3||optional||n||3.0||460||tilting||n||1/4000s||5.5||n||Y||Olympus E-PL3|
|Olympus E-PL1||optional||n||2.7||230||fixed||n||1/2000s||3.0||Y||Y||Olympus E-PL1|
|Panasonic L10||optical||n||2.5||207||swivel||n||1/4000s||3.0||Y||n||Panasonic L10|
One difference between the cameras concerns the presence of an on-board flash. The D40 has one, while the E-PM1 does not. While the built-in flash of the D40 is not very powerful, it can at times be useful as a fill-in light.
The D40 writes its imaging data to SDHC cards, while the E-PM1 uses SDXC 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 Nikon D40 and Olympus PEN E-PM1 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Nikon D40||Y||none||none||-||-||none||2.0||-||-||-||Nikon D40|
|Olympus E-PM1||Y||stereo||mono||-||-||mini||2.0||-||-||-||Olympus E-PM1|
|Nikon D3400||Y||mono||mono||-||-||mini||2.0||-||-||Y||Nikon D3400|
|Nikon D3300||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D3300|
|Nikon D3200||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D3200|
|Nikon D3100||Y||mono||mono||-||-||mini||2.0||-||-||-||Nikon D3100|
|Nikon D3000||Y||none||none||-||-||none||2.0||-||-||-||Nikon D3000|
|Nikon D40X||Y||none||none||-||-||none||2.0||-||-||-||Nikon D40X|
|Nikon D80||Y||none||none||-||-||none||2.0||-||-||-||Nikon D80|
|Nikon D50||Y||none||none||-||-||none||2.0||-||-||-||Nikon D50|
|Nikon D70s||Y||none||none||-||-||none||2.0||-||-||-||Nikon D70s|
|Olympus E-PM2||Y||stereo||mono||-||-||mini||2.0||-||-||-||Olympus E-PM2|
|Olympus E-P3||Y||stereo||none||-||-||mini||2.0||-||-||-||Olympus E-P3|
|Olympus E-PL2||Y||stereo||none||-||-||mini||2.0||-||-||-||Olympus E-PL2|
|Olympus E-PL3||Y||stereo||none||-||-||mini||2.0||-||-||-||Olympus E-PL3|
|Olympus E-PL1||Y||stereo||none||-||-||mini||2.0||-||-||-||Olympus E-PL1|
|Panasonic L10||Y||none||none||-||-||none||2.0||-||-||-||Panasonic L10|
Both the D40 and the E-PM1 have been discontinued, but can regularly be found used on eBay. The D40 was replaced by the Nikon D40X, while the E-PM1 was followed by the Olympus E-PM2. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Olympus websites.
So how do things add up? Is the Nikon D40 better than the Olympus E-PM1 or vice versa? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Nikon D40:
- Better image quality: Scores markedly higher (4 points) in the DXO overall assessment.
- More dynamic range: Captures a larger spectrum of light and dark details (0.7 EV of extra DR).
- Easier framing: Has an optical viewfinder for image composition and settings control.
- Longer lasting: Can take more shots (470 versus 330) on a single battery charge.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More heavily discounted: Has been available for much longer (launched in November 2006).
Advantages of the Olympus PEN E-PM1:
- More detail: Has more megapixels (12.2 vs 6MP), which boosts linear resolution by 40%.
- Broader imaging potential: Can capture not only stills but also 1080/60i video.
- Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (460k vs 230k dots).
- Faster burst: Shoots at higher frequency (5.5 vs 2.5 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (110x64mm vs 124x94mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 257g or 49 percent) and is thus easier to take along.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- More modern: Reflects 4 years and 7 months of technical progress since the D40 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the E-PM1 is the clear winner of the contest (10 : 6 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 Nikon D40 and the Olympus E-PM1 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says little about, for example, the shooting experience and imaging performance of the D40 and the E-PM1 in practical situations. 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.
This is why expert reviews are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera 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.
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. It should also be noted that some of the review sites have over time altered the way they render their verdicts.
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 make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 1D Mark III vs Nikon D40
- Canon 1D X Mark III vs Nikon D40
- Canon SX50 vs Nikon D40
- Fujifilm X-Pro2 vs Nikon D40
- Nikon D40 vs Olympus E-M1
- Nikon D40 vs Olympus PEN-F
- Nikon D40 vs Panasonic FZ330
- Nikon D40 vs Samsung NX1
- Nikon D40 vs Sony A7S II
- Olympus E-PL1 vs Olympus E-PM1
- Olympus E-PL2 vs Olympus E-PM1
- Olympus E-PL9 vs Olympus E-PM1
Specifications: Nikon D40 vs Olympus E-PM1
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||Nikon D40||Olympus E-PM1|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Nikon F mount lenses||Micro Four Thirds lenses|
|Launch Date||November 2006||June 2011|
|Launch Price||USD 499||USD 499|
|Sensor Specs||Nikon D40||Olympus E-PM1|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||23.7 x 15.6 mm||17.3 x 13.0 mm|
|Sensor Area||369.72 mm2||224.9 mm2|
|Sensor Diagonal||28.4 mm||21.6 mm|
|Sensor Resolution||6 Megapixels||12.2 Megapixels|
|Image Resolution||3008 x 2000 pixels||4032 x 3024 pixels|
|Pixel Pitch||7.85 μm||4.29 μm|
|Pixel Density||1.63 MP/cm2||5.42 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60i Video|
|ISO Setting||200-1600 ISO||100-12800 ISO|
|ISO Boost||200-3200 ISO||no Enhancement|
|DXO Sensor Quality (score)||56||52|
|DXO Color Depth (bits)||21.0||21.0|
|DXO Dynamic Range (EV)||11.0||10.3|
|DXO Low Light (ISO)||561||499|
|Screen Specs||Nikon D40||Olympus E-PM1|
|Viewfinder Type||Optical viewfinder||Viewfinder optional|
|Viewfinder Field of View||95%|
|LCD Framing||Live View|
|Rear LCD Size||2.5 inch||3.0 inch|
|LCD Resolution||230k dots||460k dots|
|LCD Attachment||Fixed screen||Fixed screen|
|Shooting Specs||Nikon D40||Olympus E-PM1|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Continuous Shooting||2.5 shutter flaps/s||5.5 shutter flaps/s|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||SDHC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||no|
|Connectivity Specs||Nikon D40||Olympus E-PM1|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||no HDMI||mini HDMI|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Nikon D40||Olympus E-PM1|
|Battery Life (CIPA)||470 shots per charge||330 shots per charge|
124 x 94 x 64 mm
(4.9 x 3.7 x 2.5 in)
110 x 64 x 34 mm
(4.3 x 2.5 x 1.3 in)
|Camera Weight||522 g (18.4 oz)||265 g (9.3 oz)|
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