Nikon D3100 vs D750
The Nikon D3100 and the Nikon D750 are two digital cameras that were revealed to the public, respectively, in August 2010 and September 2014. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D3100) and a full frame (D750) sensor. The D3100 has a resolution of 14.2 megapixels, whereas the D750 provides 24.2 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 Nikon D750? 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 Nikon D750 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 D3100 can be obtained in two different colors (black, red), while the D750 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 Nikon D750 is notably larger (34 percent) than the Nikon D3100. Moreover, the D750 is substantially heavier (49 percent) than the D3100. It is noteworthy in this context that the D750 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 (as in the D750) will tend to go along with bigger and heavier lenses, while more compact options are available for the smaller-sensor camera (D3100). You can compare the optics available in the Nikon Lens Catalog.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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.
|1.||Nikon D3100||124 mm||96 mm||75 mm||505 g||550||n||Aug 2010||599|
|2.||Nikon D750||141 mm||113 mm||78 mm||750 g||1230||Y||Sep 2014||2,299|
|3.||Nikon D5600||124 mm||97 mm||70 mm||465 g||970||n||Nov 2016||699|
|4.||Nikon D500||147 mm||115 mm||81 mm||860 g||1240||Y||Jan 2016||1,999|
|5.||Nikon D3400||124 mm||98 mm||76 mm||445 g||1200||n||Aug 2016||499|
|6.||Nikon D3300||124 mm||98 mm||76 mm||430 g||700||n||Jan 2014||499|
|7.||Nikon D7100||136 mm||107 mm||76 mm||765 g||950||Y||Feb 2013||1,199|
|8.||Nikon Df||144 mm||110 mm||67 mm||760 g||1400||Y||Nov 2013||2,749|
|9.||Nikon D610||141 mm||113 mm||82 mm||850 g||900||Y||Oct 2013||1,999|
|10.||Nikon D600||141 mm||113 mm||82 mm||850 g||900||Y||Sep 2012||2,099|
|11.||Nikon D3200||125 mm||96 mm||77 mm||505 g||540||n||Apr 2012||599|
|12.||Nikon D5100||128 mm||97 mm||79 mm||560 g||660||n||Apr 2011||749|
|13.||Nikon D3000||126 mm||97 mm||64 mm||536 g||500||n||Jul 2009||599|
|14.||Nikon D5000||127 mm||104 mm||80 mm||590 g||510||n||Apr 2009||749|
|15.||Nikon D60||126 mm||94 mm||64 mm||522 g||500||n||Jan 2008||629|
|16.||Nikon D40X||124 mm||94 mm||64 mm||522 g||520||n||Mar 2007||729|
|17.||Nikon D40||124 mm||94 mm||64 mm||522 g||470||n||Nov 2006||499|
|Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.|
The price is, of course, an important factor in any camera decision. 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 74 percent) than the D750, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. 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 imaging sensor is a crucial determinant 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. 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 Nikon D3100 features an APS-C sensor and the Nikon D750 a full frame sensor. The sensor area in the D750 is 142 percent bigger. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.5 and 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Technology-wise, the D750 uses a more advanced image processing engine (EXPEED 4) than the D3100 (EXPEED 2), with benefits for noise reduction, color accuracy, and processing speed.
With 24.2MP, the D750 offers a higher resolution than the D3100 (14.2MP), but the D750 nevertheless has larger individual pixels (pixel pitch of 5.97μm versus 5.01μm for the D3100) due to its larger sensor. Moreover, the D750 is a much more recent model (by 4 years) than the D3100, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixel-units.
The resolution advantage of the Nikon D750 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the D750 for good quality output (200 dots per inch) amounts to 30.1 x 20.1 inches or 76.4 x 51 cm, for very good quality (250 dpi) 24.1 x 16.1 inches or 61.1 x 40.8 cm, and for excellent quality (300 dpi) 20.1 x 13.4 inches or 50.9 x 34 cm. The corresponding values for the Nikon D3100 are 23 x 15.4 inches or 58.5 x 39 cm for good quality, 18.4 x 12.3 inches or 46.8 x 31.2 cm for very good quality, and 15.4 x 10.2 inches or 39 x 26 cm for excellent quality prints.
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 Nikon D750 are ISO 100 to ISO 12800, with the possibility to increase the ISO range to 50-51200.
Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 D750 offers substantially better image quality than the D3100 (overall score 26 points higher). The advantage is based on 2.3 bits higher color depth, 3.2 EV in additional dynamic range, and 1.7 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.
| DXO |
|2.||Nikon D750||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|8.||Nikon Df||Full Frame||16.2||4928||3280||none||24.6||13.1||3279||89|
|9.||Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|10.||Nikon D600||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the D750 provides a faster frame rate than the D3100. It can shoot movie footage at 1080/60p, while the D3100 is limited to 1080/24p.
Apart from body and sensor, cameras can and do differ across a range of features. The D3100 and the D750 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 D750 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 D750 has a higher magnification (0.70x vs 0.53x), 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 Nikon D3100 and Nikon D750 in connection with corresponding information for a sample of similar cameras.
One feature that is present on the D750, but is missing on the D3100 is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.
The Nikon D750 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 D750 write their files to SDXC cards. The D750 features dual card slots, which can be very useful in case a memory card fails. In contrast, the D3100 only has one slot. The D750 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 Nikon D750 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
It is notable that the D750 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 Nikon D750 (unlike the D3100) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the D3100 and the D750 have been discontinued, but can regularly be found used on eBay. The D3100 was replaced by the Nikon D3200, while the D750 was followed by the Nikon D780. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon website.
So how do things add up? Is the Nikon D3100 better than the Nikon D750 or vice versa? The listing below highlights the relative strengths of the two models.
Advantages of the Nikon D3100:
- More compact: Is smaller (124x96mm vs 141x113mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 245g or 33 percent) and hence easier to carry around.
- More affordable: Was introduced into a lower priced category (74 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in August 2010).
Reasons to prefer the Nikon D750:
- More detail: Has more megapixels (24.2 vs 14.2MP), which boosts linear resolution by 31%.
- Better image quality: Scores substantially higher (26 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.3 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (3.2 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (1.7 stops ISO advantage).
- Better jpgs: Has a more modern image processing engine (EXPEED 4 vs EXPEED 2).
- 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 complete view: Has a viewfinder with a larger field of view (100% vs 95%).
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.70x vs 0.53x).
- 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 (1229k vs 230k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- 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.
- Longer lasting: Gets more shots (1230 versus 550) out of a single battery charge.
- Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
- 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.
- 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 4 years of technical progress since the D3100 launch.
If the count of individual advantages (bullet points above) is taken as a guide, the D750 is the clear winner of the contest (24 : 4 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 Nikon D3100 and the Nikon D750 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the D3100 or the D750. 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 expert reviews are important. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], 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.||Nikon D3100||5/5||+ +||72/100||4.5/5||4.5/5||Aug 2010||599|
|2.||Nikon D750||5/5||+ +||90/100||4.5/5||4.5/5||Sep 2014||2,299|
|3.||Nikon D5600||4/5||..||79/100||4.5/5||4/5||Nov 2016||699|
|4.||Nikon D500||5/5||+ +||91/100||4.5/5||5/5||Jan 2016||1,999|
|5.||Nikon D3400||4/5||+||76/100||4/5||4.5/5||Aug 2016||499|
|6.||Nikon D3300||3/5||+||77/100||4.5/5||4.5/5||Jan 2014||499|
|7.||Nikon D7100||5/5||+ +||85/100||4.5/5||4.5/5||Feb 2013||1,199|
|8.||Nikon Df||4/5||..||81/100||4/5||4/5||Nov 2013||2,749|
|9.||Nikon D610||4/5||+ +||87/100||4.5/5||4.5/5||Oct 2013||1,999|
|10.||Nikon D600||4/5||+ +||87/100||5/5||4.5/5||Sep 2012||2,099|
|11.||Nikon D3200||5/5||+ +||73/100||4.5/5||4.5/5||Apr 2012||599|
|12.||Nikon D5100||5/5||+ +||76/100||4.5/5||4.5/5||Apr 2011||749|
|13.||Nikon D3000||..||+||72/100||4/5||4.5/5||Jul 2009||599|
|14.||Nikon D5000||..||+ +||75/100||4/5||4.5/5||Apr 2009||749|
|15.||Nikon D60||..||80/100||+ +||4/5||4.5/5||Jan 2008||629|
|16.||Nikon D40X||..||79/100||+ +||4/5||4/5||Mar 2007||729|
|17.||Nikon D40||..||81/100||+ +||o||4.5/5||Nov 2006||499|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
The review scores listed above should be treated with care, though. The assessments were made in relation to similar cameras of the same technological generation. 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. 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 are interested in seeing how other cameras pair up, just make your choice using the following search menu. 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: Nikon D3100 vs Nikon D750
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||Nikon D750|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Nikon F mount lenses||Nikon F mount lenses|
|Launch Date||August 2010||September 2014|
|Launch Price||USD 599||USD 2,299|
|Sensor Specs||Nikon D3100||Nikon D750|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||23.1 x 15.4 mm||35.9 x 24.0 mm|
|Sensor Area||355.74 mm2||861.6 mm2|
|Sensor Diagonal||27.8 mm||43.2 mm|
|Sensor Resolution||14.2 Megapixels||24.2 Megapixels|
|Image Resolution||4608 x 3072 pixels||6016 x 4016 pixels|
|Pixel Pitch||5.01 μm||5.97 μm|
|Pixel Density||3.98 MP/cm2||2.80 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||1080/24p Video||1080/60p Video|
|ISO Setting||100 - 3,200 ISO||100 - 12,800 ISO|
|ISO Boost||100 - 12,800 ISO||50 - 51,200 ISO|
|Image Processor||EXPEED 2||EXPEED 4|
|DXO Sensor Quality (score)||67||93|
|DXO Color Depth (bits)||22.5||24.8|
|DXO Dynamic Range (EV)||11.3||14.5|
|DXO Low Light (ISO)||919||2956|
|Screen Specs||Nikon D3100||Nikon D750|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||95%||100%|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.2inch|
|LCD Resolution||230k dots||1229k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Nikon D3100||Nikon D750|
|Focus System||Phase-detect AF||Phase-detect AF|
|Continuous Shooting||3 shutter flaps/s||6 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||150 000 actuations|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Fill Flash||Built-in Flash||Built-in Flash|
|Storage Medium||SDXC cards||SDXC cards|
|Second Storage Option||Single card slot||Dual card slots|
|UHS card support||no||UHS-I|
|Connectivity Specs||Nikon D3100||Nikon D750|
|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||Nikon D750|
|Environmental Sealing||not weather sealed||Weathersealed body|
|Battery Life (CIPA)||550 shots per charge||1230 shots per charge|
124 x 96 x 75 mm
(4.9 x 3.8 x 3.0 in)
141 x 113 x 78 mm
(5.6 x 4.4 x 3.1 in)
|Camera Weight||505 g (17.8 oz)||750 g (26.5 oz)|
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