Nikon Df vs Sony NEX-7
The Nikon Df and the Sony Alpha NEX-7 are two enthusiast cameras that were announced, respectively, in November 2013 and August 2011. The Df is a DSLR, while the NEX-7 is a mirrorless interchangeable lens camera. The cameras are based on a full frame (Df) and an APS-C (NEX-7) sensor. The Nikon has a resolution of 16.2 megapixels, whereas the Sony provides 24 MP.
Below is an overview of the main specs of the two cameras as a starting point for the comparison.
|Nikon Df||Sony NEX-7|
|Digital single lens reflex||Mirrorless system camera|
|Nikon F mount lenses||Sony E mount lenses|
|16.2 MP, Full Frame Sensor||24 MP, APS-C Sensor|
|no Video||1080/60i Video|
|ISO 100-12,800 (50 - 204,800)||ISO 100-16,000|
|Optical viewfinder||Electronic viewfinder (2359k dots)|
|3.2 LCD, 921k dots||3.0 LCD, 921k dots|
|Fixed screen (not touch-sensitive)||Tilting screen (not touch-sensitive)|
|5.5 shutter flaps per second||10 shutter flaps per second|
|Weathersealed body||not weather sealed|
|1400 shots per battery charge||430 shots per battery charge|
|144 x 110 x 67 mm, 760 g||120 x 67 x 43 mm, 400 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon Df and the Sony Alpha NEX-7? 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 Df and the Sony NEX-7 is provided in the side-by-side display below. 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 dimensions are rounded to the nearest millimeter.
The Df can be obtained in two different colors (black, silver), while the NEX-7 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 Sony NEX-7 is considerably smaller (49 percent) than the Nikon Df. Moreover, the NEX-7 is substantially lighter (47 percent) than the Df. It is worth mentioning in this context that the Df is splash and dust resistant, while the NEX-7 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 (Df) and the Sony E-Mount Lens Catalog (NEX-7). Mirrorless cameras, such as the NEX-7, 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. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.
|Nikon Df||5.7 in||4.3 in||2.6 in||26.8 oz||1400||Y||Nov 2013||2,749|
|Sony NEX-7||4.7 in||2.6 in||1.7 in||14.1 oz||430||n||Aug 2011||1,349|
|Fujifilm X100||5.0 in||3.0 in||2.1 in||15.7 oz||300||n||Sep 2010||1,199|
|Nikon D850||5.7 in||4.9 in||3.1 in||35.5 oz||1840||Y||Jul 2017||3,299|
|Nikon D4S||6.3 in||6.2 in||3.6 in||47.6 oz||3020||Y||Feb 2014||6,499|
|Nikon D750||5.6 in||4.4 in||3.1 in||26.5 oz||1230||Y||Sep 2014||2,299|
|Nikon D810||5.7 in||4.8 in||3.2 in||34.6 oz||1200||Y||Jun 2014||3,299|
|Nikon D610||5.6 in||4.4 in||3.2 in||30.0 oz||900||Y||Oct 2013||1,999|
|Nikon D4||6.3 in||6.2 in||3.6 in||47.3 oz||2600||Y||Jan 2012||5,999|
|Nikon D600||5.6 in||4.4 in||3.2 in||30.0 oz||900||Y||Sep 2012||2,099|
|Nikon D800||5.7 in||4.8 in||3.2 in||35.3 oz||900||Y||Feb 2012||2,999|
|Nikon D800E||5.7 in||4.8 in||3.2 in||35.3 oz||900||Y||Feb 2012||3,299|
|Nikon D700||5.8 in||4.8 in||3.0 in||37.9 oz||1000||Y||Jul 2008||2,999|
|Sony A6400||4.7 in||2.6 in||2.0 in||14.2 oz||410||n||Jan 2019||899|
|Sony A6000||4.7 in||2.6 in||1.8 in||12.1 oz||360||n||Feb 2014||599|
|Sony A3000||5.0 in||3.6 in||3.3 in||14.5 oz||470||n||Aug 2013||329|
|Sony RX1||4.4 in||2.6 in||2.8 in||17.0 oz||270||n||Sep 2012||2,799|
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
(1) Number of images that can be taken on a full battery charge according to the CIPA-standard; (2) Official announcement.
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 NEX-7 was launched at a markedly lower price (by 51 percent) than the Df, 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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 Nikon Df features a full frame sensor and the Sony NEX-7 an APS-C sensor. The sensor area in the NEX-7 is 58 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.
Despite having a smaller sensor, the NEX-7 offers a higher resolution of 24 megapixels, compared with 16.2 MP of the Df. 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 3.90μm versus 7.29μm for the Df). Moreover, it should be noted that the Df is much more recent (by 2 years and 2 months) than the NEX-7, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.
The resolution advantage of the Sony NEX-7 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the NEX-7 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Nikon Df are 24.6 x 16.4 inches or 62.6 x 41.7 cm for good quality, 19.7 x 13.1 inches or 50.1 x 33.3 cm for very good quality, and 16.4 x 10.9 inches or 41.7 x 27.8 cm for excellent quality prints.
The Nikon Df has a native sensitivity range from ISO 100 to ISO 12800, which can be extended to ISO 50-204800. The corresponding ISO settings for the Sony Alpha NEX-7 are ISO 100 to ISO 16000 (no boost).
Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under review, the Df has a notably higher overall DXO score than the NEX-7 (overall score 8 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.5 bits higher color depth, 0.3 EV of lower 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.
|Nikon Df||Full Frame||16.2||4928||3280||none||24.6||13.1||3279||89|
|Nikon D850||Full Frame||45.4||8256||5504||4K/30p||26.4||14.8||2660||100|
|Nikon D4S||Full Frame||16.2||4928||3280||1080/60p||24.4||13.3||3074||89|
|Nikon D750||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|Nikon D810||Full Frame||36.2||7360||4912||1080/60p||25.7||14.8||2853||97|
|Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|Nikon D4||Full Frame||16.2||4928||3280||1080/30p||24.7||13.1||2965||89|
|Nikon D600||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94|
|Nikon D800||Full Frame||36.2||7360||4912||1080/30p||25.3||14.4||2853||95|
|Nikon D800E||Full Frame||36.2||7360||4912||1080/30p||25.6||14.3||2979||96|
|Nikon D700||Full Frame||12.1||4256||2832||none||23.5||12.2||2303||80|
|Sony RX1||Full Frame||24.0||6000||4000||1080/60p||25.1||14.3||2534||93|
Many modern cameras cannot only take still pictures, but also record videos. The NEX-7 indeed provides for movie recording, while the Df does not. The highest resolution format that the NEX-7 can use is 1080/60i.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the NEX-7 has an electronic viewfinder (2359k dots), while the Df 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 viewfinders of both cameras offer the same field of view (100%), but the viewfinder of the NEX-7 has a higher magnification than the one of the Df (0.73x vs 0.70x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Nikon Df, the Sony NEX-7, and comparable cameras.
One feature that is present on the Df, but is missing on the NEX-7 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 Df 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 Df writes its imaging data to SDXC cards, while the NEX-7 uses SDXC or Memory Stick PRO Duo cards. The Df supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the NEX-7 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 Df and Sony Alpha NEX-7 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
Studio photographers will appreciate that the Nikon Df (unlike the NEX-7) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.
Both the Df and the NEX-7 have been discontinued, but can regularly be found used on eBay. Neither of the two has a direct successor, so they represent the end of the respective camera lines from Nikon and Sony. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Sony websites.
So how do things add up? Is the Nikon Df better than the Sony NEX-7 or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Nikon Df:
- Better image quality: Scores markedly higher (8 points) in the DXO overall assessment.
- Better low-light sensitivity: Requires less light for good images (1.7 stops ISO advantage).
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Can take more shots (1400 versus 430) on a single battery charge.
- Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
- 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 and 2 months of technical progress since the NEX-7 launch.
Arguments in favor of the Sony Alpha NEX-7:
- More detail: Has more megapixels (24 vs 16.2MP), which boosts linear resolution by 22%.
- Broader imaging potential: Can capture not only stills but also 1080/60i video.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.73x vs 0.70x).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster burst: Shoots at higher frequency (10 vs 5.5 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (120x67mm vs 144x110mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 360g or 47 percent) and is thus easier to take along.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (51 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in August 2011).
If the number of relative strengths (bullet points above) is taken as a guide, the NEX-7 comes out slightly ahead of the Df (12 : 11 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 Df and the Sony NEX-7 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 says little about, for example, the shooting experience and imaging performance of the Df and the NEX-7 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 hands-on reviews by experts 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.
|Nikon Df||..||81/100||4/5||4/5||4/5||Nov 2013||2,749|
|Sony NEX-7||+ +||81/100||4.5/5||5/5||5/5||Aug 2011||1,349|
|Fujifilm X100||..||75/100||4/5||4/5||5/5||Sep 2010||1,199|
|Nikon D850||+ +||89/100||4.5/5||5/5||5/5||Jul 2017||3,299|
|Nikon D4S||..||..||4.5/5||5/5||4.5/5||Feb 2014||6,499|
|Nikon D750||+ +||90/100||4.5/5||5/5||4.5/5||Sep 2014||2,299|
|Nikon D810||..||86/100||5/5||4.5/5||4.5/5||Jun 2014||3,299|
|Nikon D610||+ +||87/100||4.5/5||4.5/5||4.5/5||Oct 2013||1,999|
|Nikon D4||..||..||4.5/5||..||4.5/5||Jan 2012||5,999|
|Nikon D600||+ +||87/100||5/5||4.5/5||4.5/5||Sep 2012||2,099|
|Nikon D800||+ +||82/100||5/5||5/5||5/5||Feb 2012||2,999|
|Nikon D800E||..||84/100||5/5||4.5/5||5/5||Feb 2012||3,299|
|Nikon D700||89/100||+ +||4.5/5||5/5||4.5/5||Jul 2008||2,999|
|Sony A6400||+||85/100||4.5/5||..||4/5||Jan 2019||899|
|Sony A6000||+||80/100||4.5/5||5/5||5/5||Feb 2014||599|
|Sony A3000||+||..||4/5||4.5/5||4/5||Aug 2013||329|
|Sony RX1||..||79/100||4/5||4.5/5||4.5/5||Sep 2012||2,799|
|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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
Specifications: Nikon Df vs Sony NEX-7
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 Df||Sony NEX-7|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Nikon F mount lenses||Sony E mount lenses|
|Launch Date||November 2013||August 2011|
|Launch Price||USD 2,749||USD 1,349|
|Sensor Specs||Nikon Df||Sony NEX-7|
|Sensor Format||Full Frame Sensor||APS-C Sensor|
|Sensor Size||36.0 x 23.9 mm||23.4 x 15.6 mm|
|Sensor Area||860.4 mm2||365.04 mm2|
|Sensor Diagonal||43.2 mm||28.1 mm|
|Sensor Resolution||16.2 Megapixels||24 Megapixels|
|Image Resolution||4928 x 3280 pixels||6000 x 4000 pixels|
|Pixel Pitch||7.29 μm||3.90 μm|
|Pixel Density||1.88 MP/cm2||6.57 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||no Video||1080/60i Video|
|ISO Setting||100 - 12,800 ISO||100 - 16,000 ISO|
|ISO Boost||50 - 204,800 ISO||no Enhancement|
|Image Processor||EXPEED 3||BIONZ|
|DXO Sensor Quality (score)||89||81|
|DXO Color Depth (bits)||24.6||24.1|
|DXO Dynamic Range (EV)||13.1||13.4|
|DXO Low Light (ISO)||3279||1016|
|Screen Specs||Nikon Df||Sony NEX-7|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2359k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.2inch||3.0inch|
|LCD Resolution||921k dots||921k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Nikon Df||Sony NEX-7|
|Focus System||Phase-detect AF||Contrast-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||10 shutter flaps/s|
|Shutter Life Expectancy||150 000 actuations||150 000 actuations|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Fill Flash||no On-Board Flash||Build-in Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Single card slot|
|UHS card support||UHS-I||no|
|Connectivity Specs||Nikon Df||Sony NEX-7|
|Studio Flash||PC Sync socket||no PC Sync|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||mini HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Body Specs||Nikon Df||Sony NEX-7|
|Environmental Sealing||Weathersealed body||not weather sealed|
|Battery Life (CIPA)||1400 shots per charge||430 shots per charge|
144 x 110 x 67 mm
(5.7 x 4.3 x 2.6 in)
120 x 67 x 43 mm
(4.7 x 2.6 x 1.7 in)
|Camera Weight||760 g (26.8 oz)||400 g (14.1 oz)|
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