Nikon D7000 vs Sony A7
The Nikon D7000 and the Sony Alpha A7 are two enthusiast cameras that were revealed to the public, respectively, in September 2010 and October 2013. The D7000 is a DSLR, while the A7 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D7000) and a full frame (A7) sensor. The Nikon has a resolution of 16.1 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D7000 and the Sony Alpha A7? 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 D7000 and the Sony A7 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 size dimensions are rounded to the nearest millimeter.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7 is notably smaller (14 percent) than the Nikon D7000. Moreover, the A7 is substantially lighter (39 percent) than the D7000. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.
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 (D7000) and the Sony FE Lens Catalog (A7). Mirrorless cameras, such as the A7, 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.
Concerning battery life, the D7000 gets 1050 shots out of its EN-EL15 battery, while the A7 can take 340 images on a single charge of its NP-FW50 power pack. The power pack in the A7 can be charged via the USB port, which can be very convenient when travelling.
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, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.
|1.||Nikon D7000||132 mm||105 mm||77 mm||780 g||1050||Y||Sep 2010||1,499|
|2.||Sony A7||127 mm||94 mm||48 mm||474 g||340||Y||Oct 2013||1,699|
|3.||Canon 60D||145 mm||106 mm||79 mm||755 g||1100||Y||Aug 2010||1,399|
|4.||Canon 7D||148 mm||111 mm||74 mm||860 g||800||Y||Sep 2009||1,699|
|5.||Nikon D7500||136 mm||104 mm||73 mm||720 g||950||Y||Apr 2017||1,299|
|6.||Nikon D7100||136 mm||107 mm||76 mm||765 g||950||Y||Feb 2013||1,199|
|7.||Nikon D5100||128 mm||97 mm||79 mm||560 g||660||n||Apr 2011||749|
|8.||Nikon D3100||124 mm||96 mm||75 mm||505 g||550||n||Aug 2010||599|
|9.||Nikon D300S||147 mm||115 mm||81 mm||938 g||950||Y||Jul 2009||1,799|
|10.||Nikon D90||132 mm||103 mm||77 mm||703 g||850||n||Aug 2008||1,299|
|11.||Nikon D300||147 mm||114 mm||74 mm||925 g||1000||Y||Aug 2007||1,799|
|12.||Nikon D200||147 mm||113 mm||74 mm||920 g||400||Y||Nov 2005||1,699|
|13.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999|
|14.||Sony A7S||127 mm||94 mm||48 mm||489 g||380||Y||Apr 2014||2,499|
|15.||Sony A7R||127 mm||94 mm||48 mm||465 g||340||Y||Oct 2013||2,299|
|16.||Sony RX1R||113 mm||65 mm||70 mm||482 g||270||n||Jun 2013||2,799|
|17.||Sony RX1||113 mm||65 mm||70 mm||482 g||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.|
Any camera decision will obviously take relative prices into account. The retail prices at the time of the camera’s release place the model in the market relative to other models in the producer’s line-up and the competition. The D7000 was launched at a somewhat lower price (by 12 percent) than the A7, which makes it more attractive for photographers on a tight budget. 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 imaging sensor is a crucial determinant 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 associated with larger, more expensive camera bodies and lenses.
Of the two cameras under consideration, the Nikon D7000 features an APS-C sensor and the Sony A7 a full frame sensor. The sensor area in the A7 is 131 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.
With 24MP, the A7 offers a higher resolution than the D7000 (16.1MP), but the A7 nevertheless has larger individual pixels (pixel pitch of 5.97μm versus 4.80μm for the D7000) due to its larger sensor. Moreover, the A7 is a much more recent model (by 3 years and 1 month) than the D7000, 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 Sony A7 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 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 D7000 are 24.6 x 16.3 inches or 62.6 x 41.5 cm for good quality, 19.7 x 13.1 inches or 50.1 x 33.2 cm for very good quality, and 16.4 x 10.9 inches or 41.7 x 27.6 cm for excellent quality prints.
The A7 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Nikon D7000 has a native sensitivity range from ISO 100 to ISO 6400, which can be extended to ISO 100-25600. The corresponding ISO settings for the Sony Alpha A7 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-51200.
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 A7 has a markedly higher DXO score than the D7000 (overall score 10 points higher), which will translate into better image quality. The advantage is based on 1.3 bits higher color depth, 0.3 EV in additional dynamic range, and 0.9 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.||Sony A7||Full Frame||24.0||6000||4000||1080/60p||24.8||14.2||2248||90|
|13.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|14.||Sony A7S||Full Frame||12.0||4240||2832||1080/60p||23.9||13.2||3702||87|
|15.||Sony A7R||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95|
|16.||Sony RX1R||Full Frame||24.0||6000||4000||1080/60p||25.0||13.6||2537||91|
|17.||Sony RX1||Full Frame||24.0||6000||4000||1080/60p||25.1||14.3||2534||93|
Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A7 provides a faster frame rate than the D7000. It can shoot movie footage at 1080/60p, while the Nikon is limited to 10800/24p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7 has an electronic viewfinder (2400k dots), while the D7000 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 A7 has a higher magnification than the one of the D7000 (0.71x vs 0.63x), 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 D7000 and Sony A7 in connection with corresponding information for a sample of similar cameras.
|13.||Sony A7 II||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y|
One difference between the cameras concerns the presence of an on-board flash. The D7000 has one, while the A7 does not. While the built-in flash of the D7000 is not very powerful, it can at times be useful as a fill-in light.
The Nikon D7000 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 D7000 writes its imaging data to SDXC cards, while the A7 uses SDXC or Memory Stick PRO Duo cards. The D7000 features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7 only has one slot. The A7 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D7000 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 D7000 and Sony Alpha A7 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|13.||Sony A7 II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-|
It is notable that the A7 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D7000 does not provide wifi capability.
Both the D7000 and the A7 have been discontinued, but can regularly be found used on eBay. The D7000 was replaced by the Nikon D7100, while the A7 was followed by the Sony A7 II. 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 what is the bottom line? Is there a clear favorite between the Nikon D7000 and the Sony A7? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Nikon D7000:
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier setting verification: Features an LCD display on top to control shooting parameters.
- Faster burst: Shoots at higher frequency (6 vs 5 flaps/sec) to capture the decisive moment.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Can take more shots (1050 versus 340) on a single battery charge.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- More affordable: Was introduced into a lower priced segment (12 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in September 2010).
Advantages of the Sony Alpha A7:
- More detail: Has more megapixels (24 vs 16.1MP), which boosts linear resolution by 22%.
- Better image quality: Scores markedly higher (10 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (1.3 bits more color depth).
- Better low-light sensitivity: Can shoot in dim conditions (0.9 stops ISO advantage).
- Better video: Provides higher movie framerates (1080/60p versus 10800/24p).
- Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
- Better sound control: Has a headphone port that enables audio monitoring while recording.
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.71x vs 0.63x).
- More detailed LCD: Has a higher resolution rear screen (1230k vs 921k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- More compact: Is smaller (127x94mm vs 132x105mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 306g or 39 percent) and is thus easier to take along.
- Easier travel charging: Can be conveniently charged via its USB port.
- 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.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
- More modern: Reflects 3 years and 1 month of technical progress since the D7000 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the A7 is the clear winner of the contest (19 : 9 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 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 D7000 and the Sony A7 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 D7000 and the A7 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 following table reports the overall ratings of the cameras as published by some of the major camera 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 D7000||4/5||..||80/100||4.5/5||4.5/5||Sep 2010||1,499|
|2.||Sony A7||5/5||+ +||80/100||5/5||5/5||Oct 2013||1,699|
|3.||Canon 60D||5/5||+||79/100||4/5||4.5/5||Aug 2010||1,399|
|4.||Canon 7D||5/5||+ +||84/100||4.5/5||4.5/5||Sep 2009||1,699|
|5.||Nikon D7500||4.5/5||+ +||86/100||5/5||4.5/5||Apr 2017||1,299|
|6.||Nikon D7100||5/5||+ +||85/100||4.5/5||4.5/5||Feb 2013||1,199|
|7.||Nikon D5100||5/5||+ +||76/100||4.5/5||4.5/5||Apr 2011||749|
|8.||Nikon D3100||5/5||+ +||72/100||4.5/5||4.5/5||Aug 2010||599|
|9.||Nikon D300S||5/5||+ +||82/100||4/5||4.5/5||Jul 2009||1,799|
|10.||Nikon D90||..||+ +||+ +||4/5||4.5/5||Aug 2008||1,299|
|11.||Nikon D300||..||+ +||+ +||5/5||4.5/5||Aug 2007||1,799|
|12.||Nikon D200||..||+ +||+ +||o||..||Nov 2005||1,699|
|13.||Sony A7 II||5/5||+||82/100||4.5/5||5/5||Nov 2014||1,999|
|14.||Sony A7S||4/5||..||86/100||4.5/5||5/5||Apr 2014||2,499|
|15.||Sony A7R||5/5||+ +||82/100||4.5/5||5/5||Oct 2013||2,299|
|16.||Sony RX1R||5/5||..||..||4/5||4.5/5||Jun 2013||2,799|
|17.||Sony RX1||5/5||..||79/100||4/5||4.5/5||Sep 2012||2,799|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, 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 rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. 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 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 D7000 vs Sony A7
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 D7000||Sony A7|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Nikon F mount lenses||Sony E mount lenses|
|Launch Date||September 2010||October 2013|
|Launch Price||USD 1,499||USD 1,699|
|Sensor Specs||Nikon D7000||Sony A7|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||23.6 x 15.7 mm||35.8 x 23.9 mm|
|Sensor Area||370.52 mm2||855.62 mm2|
|Sensor Diagonal||28.3 mm||43 mm|
|Sensor Resolution||16.1 Megapixels||24 Megapixels|
|Image Resolution||4928 x 3264 pixels||6000 x 4000 pixels|
|Pixel Pitch||4.80 μm||5.97 μm|
|Pixel Density||4.34 MP/cm2||2.80 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||10800/24p Video||1080/60p Video|
|ISO Setting||100 - 6,400 ISO||100 - 25,600 ISO|
|ISO Boost||100 - 25,600 ISO||50 - 51,200 ISO|
|Image Processor||EXPEED 2||BIONZ X|
|DXO Sensor Quality (score)||80||90|
|DXO Color Depth (bits)||23.5||24.8|
|DXO Dynamic Range (EV)||13.9||14.2|
|DXO Low Light (ISO)||1167||2248|
|Screen Specs||Nikon D7000||Sony A7|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||2400k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||3.0inch|
|LCD Resolution||921k dots||1230k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Nikon D7000||Sony A7|
|Focus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000s||1/8000s|
|Continuous Shooting||6 shutter flaps/s||5 shutter flaps/s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Dual card slots||Single card slot|
|UHS card support||no||UHS-I|
|Connectivity Specs||Nikon D7000||Sony A7|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||no Headphone port||Headphone port|
|Wifi Support||no Wifi||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Body Specs||Nikon D7000||Sony A7|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||1050 shots per charge||340 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
132 x 105 x 77 mm
(5.2 x 4.1 x 3.0 in)
127 x 94 x 48 mm
(5.0 x 3.7 x 1.9 in)
|Camera Weight||780 g (27.5 oz)||474 g (16.7 oz)|
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