Nikon D3100 vs Panasonic GH3
The Nikon D3100 and the Panasonic Lumix DMC-GH3 are two digital cameras that were announced, respectively, in August 2010 and September 2012. The D3100 is a DSLR, while the GH3 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D3100) and a Four Thirds (GH3) sensor. The Nikon has a resolution of 14.2 megapixels, whereas the Panasonic provides 15.9 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 Nikon D3100 and the Panasonic Lumix DMC-GH3? 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.
An illustration of the physical size and weight of the Nikon D3100 and the Panasonic GH3 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All size dimensions are rounded to the nearest millimeter.
The D3100 can be obtained in two different colors (black, red), while the GH3 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 Panasonic GH3 is somewhat larger (4 percent) than the Nikon D3100. Moreover, the GH3 is markedly heavier (9 percent) than the D3100. It is noteworthy in this context that the GH3 is splash and dust-proof, while the D3100 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. 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 (D3100) and the Micro Four Thirds Lens Catalog (GH3). Mirrorless cameras, such as the GH3, 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 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.
|Nikon D3100||4.9 in||3.8 in||3.0 in||17.8 oz||550||n||Aug 2010||599|
|Panasonic GH3||5.2 in||3.7 in||3.2 in||19.4 oz||540||Y||Sep 2012||1,299|
|Nikon D3200||4.9 in||3.8 in||3.0 in||17.8 oz||540||n||Apr 2012||599|
|Nikon D5100||5.0 in||3.8 in||3.1 in||19.8 oz||660||n||Apr 2011||749|
|Nikon D7000||5.2 in||4.1 in||3.0 in||27.5 oz||1050||Y||Sep 2010||1,499|
|Nikon D3000||5.0 in||3.8 in||2.5 in||18.9 oz||500||n||Jul 2009||599|
|Nikon D5000||5.0 in||4.1 in||3.1 in||20.8 oz||510||n||Apr 2009||749|
|Nikon D60||5.0 in||3.7 in||2.5 in||18.4 oz||500||n||Jan 2008||629|
|Nikon D40X||4.9 in||3.7 in||2.5 in||18.4 oz||520||n||Mar 2007||729|
|Nikon D40||4.9 in||3.7 in||2.5 in||18.4 oz||470||n||Nov 2006||499|
|Olympus E-M5 II||4.9 in||3.3 in||1.8 in||16.5 oz||310||Y||Feb 2015||1,099|
|Olympus E-M1||5.1 in||3.7 in||2.5 in||17.5 oz||350||Y||Sep 2013||1,399|
|Panasonic GH4||5.2 in||3.7 in||3.3 in||19.8 oz||500||Y||Feb 2014||1,499|
|Panasonic G6||4.8 in||3.3 in||2.8 in||13.8 oz||340||n||Apr 2013||599|
|Panasonic GH2||4.9 in||3.5 in||3.0 in||15.6 oz||330||n||Sep 2010||899|
|Sony NEX-5N||4.4 in||2.3 in||1.5 in||9.5 oz||460||n||Aug 2011||699|
|Sony NEX-C3||4.3 in||2.4 in||1.3 in||7.9 oz||400||n||Jun 2011||599|
|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 listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D3100 was launched at a markedly lower price (by 54 percent) than the GH3, 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. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.
Of the two cameras under consideration, the Nikon D3100 features an APS-C sensor and the Panasonic GH3 a Four Thirds sensor. The sensor area in the GH3 is 37 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 D3100 has a native 3:2 aspect ratio, while the one in the GH3 offers a 4:3 aspect.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
Despite having a smaller sensor, the GH3 offers a higher resolution of 15.9 megapixels, compared with 14.2 MP of the D3100. 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 3.76μm versus 5.01μm for the D3100). However, it should be noted that the GH3 is much more recent (by 2 years) than the D3100, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.
The Nikon D3100 has a native sensitivity range from ISO 100 to ISO 3200, which can be extended to ISO 100-12800. The corresponding ISO settings for the Panasonic Lumix DMC-GH3 are ISO 200 to ISO 12800, with the possibility to increase the ISO range to 125-25600.
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"). Of the two cameras under consideration, the GH3 has a markedly higher DXO score than the D3100 (overall score 4 points higher), which will translate into better image quality. The advantage is based on 0.2 bits higher color depth, 1.1 EV in additional dynamic range, and 0.2 stops of reduced 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.
| DXO |
|Panasonic GH3||Four Thirds||15.9||4608||3456||1080/60p||22.7||12.4||812||71|
|Olympus E-M5 II||Four Thirds||15.9||4608||3456||1080/60p||23.0||12.5||842||73|
|Olympus E-M1||Four Thirds||15.9||4608||3456||1080/30p||23.0||12.7||757||73|
|Panasonic GH4||Four Thirds||15.9||4608||3456||4K/30p||23.2||12.8||791||74|
|Panasonic G6||Four Thirds||15.9||4608||3456||1080/60p||21.3||11.5||639||61|
|Panasonic GH2||Four Thirds||15.9||4608||3456||1080/60i||21.2||11.3||655||60|
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the GH3 provides a faster frame rate than the D3100. It can shoot movie footage at 1080/60p, while the Nikon is limited to 1080/24p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the GH3 has an electronic viewfinder (1746k dots), while the D3100 has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The viewfinder in the GH3 offers a wider field of view (100%) than the one in the D3100 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the GH3 has a higher magnification (0.67x vs 0.53x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Nikon D3100 and Panasonic GH3 along with similar information for a selection of comparators.
|Olympus E-M5 II||2360||n||3.0||1037||swivel||Y||1/8000s||10.0||n||Y|
One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The GH3 has a touchscreen, while the D3100 has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.The GH3 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the D3100 does not have a selfie-screen.
The Panasonic GH3 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 D3100 and the GH3 write their files to SDXC cards. The GH3 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D3100 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 Nikon D3100 and Panasonic Lumix DMC-GH3 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|Olympus E-M5 II||Y||stereo||mono||Y||-||micro||2.0||Y||-||-|
It is notable that the GH3 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D3100 does not provide wifi capability.
Studio photographers will appreciate that the Panasonic GH3 (unlike the D3100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the D3100 and the GH3 have been discontinued, but can regularly be found used on eBay. The D3100 was replaced by the Nikon D3200, while the GH3 was followed by the Panasonic GH4. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Panasonic websites.
So what conclusions can be drawn? Is there a clear favorite between the Nikon D3100 and the Panasonic GH3? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.
Advantages of the Nikon D3100:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- More affordable: Was introduced into a lower priced category (54 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in August 2010).
Arguments in favor of the Panasonic Lumix DMC-GH3:
- Better image quality: Scores markedly higher (4 points) in the DXO overall evaluation.
- More dynamic range: Captures a broader range of light and dark details (1.1 EV of extra DR).
- Better video: Provides higher movie framerates (1080/60p versus 1080/24p).
- Better sound: Can connect to an external microphone for higher quality sound recording.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More framing info: Has an electronic viewfinder that displays shooting data.
- 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 (0.67x vs 0.53x).
- More detailed LCD: Has a higher resolution rear screen (614k vs 230k dots).
- More flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
- Faster burst: Shoots at higher frequency (6 vs 3 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Easier file upload: Has wifi built in for automatic backup or image transfer to the web.
- Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Reflects 2 years of technical progress since the D3100 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the GH3 is the clear winner of the contest (20 : 3 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 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 Nikon D3100 and the Panasonic GH3 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 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 D3100 or the GH3. 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 why hands-on reviews by experts are important. 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.
|Nikon D3100||+ +||72/100||4.5/5||5/5||4.5/5||Aug 2010||599|
|Panasonic GH3||+ +||79/100||4.5/5||5/5||4.5/5||Sep 2012||1,299|
|Nikon D3200||+ +||73/100||4.5/5||4.5/5||4.5/5||Apr 2012||599|
|Nikon D5100||+ +||76/100||4.5/5||5/5||4.5/5||Apr 2011||749|
|Nikon D7000||..||80/100||4.5/5||5/5||4.5/5||Sep 2010||1,499|
|Nikon D3000||+||72/100||4/5||3.5/5||4.5/5||Jul 2009||599|
|Nikon D5000||+ +||75/100||4/5||5/5||4.5/5||Apr 2009||749|
|Nikon D60||80/100||+ +||4/5||o||4.5/5||Jan 2008||629|
|Nikon D40X||79/100||+ +||4/5||o||4/5||Mar 2007||729|
|Nikon D40||81/100||+ +||o||5/5||4.5/5||Nov 2006||499|
|Olympus E-M5 II||+ +||81/100||5/5||4.5/5||5/5||Feb 2015||1,099|
|Olympus E-M1||+ +||84/100||4.5/5||4.5/5||4.5/5||Sep 2013||1,399|
|Panasonic GH4||+ +||85/100||5/5||5/5||5/5||Feb 2014||1,499|
|Panasonic G6||+ +||..||5/5||..||4.5/5||Apr 2013||599|
|Panasonic GH2||+ +||79/100||4.5/5||4.5/5||5/5||Sep 2010||899|
|Sony NEX-5N||+ +||79/100||4.5/5||5/5||4.5/5||Aug 2011||699|
|Sony NEX-C3||+ +||74/100||4.5/5||4.5/5||4/5||Jun 2011||599|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, 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 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? In case you would like to check on the differences and similarities of other camera models, just make your choice using the following search menu. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
Specifications: Nikon D3100 vs Panasonic GH3
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 D3100||Panasonic GH3|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Nikon F mount lenses||Micro Four Thirds lenses|
|Launch Date||August 2010||September 2012|
|Launch Price||USD 599||USD 1,299|
|Sensor Specs||Nikon D3100||Panasonic GH3|
|Sensor Format||APS-C Sensor||Four Thirds Sensor|
|Sensor Size||23.1 x 15.4 mm||17.3 x 13.0 mm|
|Sensor Area||355.74 mm2||224.9 mm2|
|Sensor Diagonal||27.8 mm||21.6 mm|
|Sensor Resolution||14.2 Megapixels||15.9 Megapixels|
|Image Resolution||4608 x 3072 pixels||4608 x 3456 pixels|
|Pixel Pitch||5.01 μm||3.76 μm|
|Pixel Density||3.98 MP/cm2||7.08 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/24p Video||1080/60p Video|
|ISO Setting||100 - 3,200 ISO||200 - 12,800 ISO|
|ISO Boost||100 - 12,800 ISO||125 - 25,600 ISO|
|Image Processor||EXPEED 2||Venus VII FHD|
|DXO Sensor Quality (score)||67||71|
|DXO Color Depth (bits)||22.5||22.7|
|DXO Dynamic Range (EV)||11.3||12.4|
|DXO Low Light (ISO)||919||812|
|Screen Specs||Nikon D3100||Panasonic GH3|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||1746k dots|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||230k dots||614k dots|
|LCD Attachment||Fixed screen||Swivel screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Nikon D3100||Panasonic GH3|
|Focus System||Phase-detect AF||Contrast-detect AF|
|Continuous Shooting||3 shutter flaps/s||6 shutter flaps/s|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Build-in Flash||Build-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Nikon D3100||Panasonic GH3|
|Studio Flash||no PC Sync||PC Sync socket|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Body Specs||Nikon D3100||Panasonic GH3|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||550 shots per charge||540 shots per charge|
124 x 96 x 75 mm
(4.9 x 3.8 x 3.0 in)
133 x 93 x 82 mm
(5.2 x 3.7 x 3.2 in)
|Camera Weight||505 g (17.8 oz)||550 g (19.4 oz)|
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.