Sony A7R III versus Nikon D750
The Sony Alpha A7R III and the Nikon D750 are two enthusiast cameras that were announced, respectively, in October 2017 and September 2014. The A7R III is a mirrorless interchangeable lens camera, while the D750 is a DSLR. Both cameras are equipped with a full frame sensor. The Sony has a resolution of 42.2 megapixel, whereas the Nikon provides 24.2 MP.
An illustration of the physical size and weight of the Sony A7R III and the Nikon D750 is provided in the side-by-side display below. 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. You can also use the toggle button to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the A7R III – represents the basis or 100 percent across all the size and weight measures).
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 (31 percent) than the Sony A7R III. Moreover, the D750 is markedly heavier (15 percent) than the A7R III. 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. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can find an overview of optics for the two cameras in the Sony FE Lens Catalog (A7R III) and the Nikon Lens Catalog (D750). Mirrorless cameras, such as the Sony A7R III, have moreover the advantage that they have a relatively short flange to focal plane distance and can thus use many lenses from other systems via adapters.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 comparisons there.
|Camera Body Specifications
|Sony A7R III (⇒ rgt)||127 mm||96 mm||74 mm||650 g||650||YES||2017||3,199||latest||check|
|Nikon D750 (⇒ lft)||141 mm||113 mm||78 mm||750 g||1230||YES||2014||2,299||latest||check|
|Hasselblad X1D (⇒ lft | rgt)||150 mm||98 mm||71 mm||725 g||..||YES||2016||8,995||latest||check|
|Nikon D5 (⇒ lft | rgt)||160 mm||159 mm||92 mm||1415 g||3780||YES||2016||6,499||latest||check|
|Nikon D610 (⇒ lft | rgt)||141 mm||113 mm||82 mm||850 g||900||YES||2013||1,999||latest||check|
|Nikon Df (⇒ lft | rgt)||144 mm||110 mm||67 mm||760 g||1400||YES||2013||2,749||latest||check|
|Nikon D600 (⇒ lft | rgt)||141 mm||113 mm||82 mm||850 g||900||YES||2012||2,099||discont.||check|
|Nikon D700 (⇒ lft | rgt)||147 mm||123 mm||77 mm||1074 g||1000||YES||2008||2,999||discont.||check|
|Sony A7 III (⇒ lft | rgt)||127 mm||96 mm||74 mm||650 g||610||YES||2018||1,999||latest||check|
|Sony A9 (⇒ lft | rgt)||127 mm||96 mm||63 mm||673 g||650||YES||2017||4,499||latest||check|
|Sony A99 II (⇒ lft | rgt)||143 mm||104 mm||76 mm||849 g||490||YES||2016||3,199||latest||check|
|Sony A6500 (⇒ lft | rgt)||120 mm||67 mm||53 mm||453 g||350||YES||2016||1,399||latest||check|
|Sony A7R II (⇒ lft | rgt)||127 mm||96 mm||60 mm||625 g||290||YES||2015||3,199||discont.||check|
|Sony A7S II (⇒ lft | rgt)||127 mm||96 mm||60 mm||627 g||370||YES||2015||2,999||latest||check|
|Sony A7 II (⇒ lft | rgt)||127 mm||96 mm||60 mm||599 g||350||YES||2014||1,999||discont.||check|
|Sony A7R (⇒ lft | rgt)||127 mm||94 mm||48 mm||465 g||340||YES||2013||2,299||discont.||check|
|Sony A99 (⇒ lft | rgt)||147 mm||111 mm||78 mm||812 g||500||YES||2012||2,799||discont.||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D750 was launched at a markedly lower price (by 28 percent) than the A7R III, 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. 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 tend to be associated with larger, more expensive camera bodies and lenses.
Both cameras under consideration feature a full frame sensor and have a format factor (sometimes also referred to as "crop factor") of 1.0. Within the spectrum of camera sensors, this places the review cameras among the large-sensor cameras that aim for top notch image quality. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
While the two cameras under review share the same sensor size, the A7R III offers a higher resolution of 42.2 megapixel, compared with 24.2 MP of the D750. This megapixel advantage translates into a 32 percent gain in linear resolution. On the other hand, these sensor specs imply that the A7R III has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.52μm versus 5.97μm for the D750). In this context, it should be noted, however, that the A7R III is much more recent (by 3 years and 1 month) than the D750, and its sensor will have benefitted from technological advances during this time that compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the A7R III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
Unlike the D750, the A7R III has the capacity to capture high quality composite images by combining multiple shots after shifting its sensor by miniscule distances. This multi-shot, pixel-shift mode is most suitable for photography of stationary objects (landscapes, studio scenes).
Consistent information on actual sensor performance is available from DXO Mark for most 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 A7R III has a notably higher overall DXO score than the D750 (overall score 7 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 1.2 bits higher color depth, 0.2 EV in additional dynamic range, and 0.3 stops in additional 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.
|Sony A7R III (⇒ rgt)||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100|
|Nikon D750 (⇒ lft)||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93|
|Hasselblad X1D (⇒ lft | rgt)||Medium Format||51.3||8272||6200||1080/25p||26.2||14.8||4489||102|
|Nikon D5 (⇒ lft | rgt)||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88|
|Nikon D610 (⇒ lft | rgt)||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94|
|Nikon Df (⇒ lft | rgt)||Full Frame||16.2||4928||3280||no||24.6||13.1||3279||89|
|Nikon D600 (⇒ lft | rgt)||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94|
|Nikon D700 (⇒ lft | rgt)||Full Frame||12.1||4256||2832||no||23.5||12.2||2303||80|
|Sony A7 III (⇒ lft | rgt)||Full Frame||24.0||6000||4000||4K/30p||..||..||..||..|
|Sony A9 (⇒ lft | rgt)||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92|
|Sony A99 II (⇒ lft | rgt)||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|Sony A6500 (⇒ lft | rgt)||APS-C||24.0||6000||4000||4K/30p||24.5||13.7||1405||85|
|Sony A7R II (⇒ lft | rgt)||Full Frame||42.2||7952||5304||4K/30p||26.0||13.9||3434||98|
|Sony A7S II (⇒ lft | rgt)||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85|
|Sony A7 II (⇒ lft | rgt)||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|Sony A7R (⇒ lft | rgt)||Full Frame||36.2||7360||4912||1080/60p||25.6||14.1||2746||95|
|Sony A99 (⇒ lft | rgt)||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
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 A7R III provides a higher video resolution than the D750. It can shoot video footage at 4K/30p, while the Nikon is limited to 1080/60p.
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A7R III has an electronic viewfinder (3686k dots), while the D750 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 following table reports on some other key feature differences and similarities of the Sony A7R III, the Nikon D750, and comparable cameras. If you need more detail on the specs, you can find comprehensive listings, for example, in the dpreview camera hub.
|Sony A7R III (⇒ rgt)||3686||no||3.0||1440||tilting||YES||8000||10.0||no||YES|
|Nikon D750 (⇒ lft)||optical||YES||3.2||1229||tilting||no||4000||6.0||12||no|
|Hasselblad X1D (⇒ lft | rgt)||2360||no||3.0||920||fixed||YES||2000||2.3||no||no|
|Nikon D5 (⇒ lft | rgt)||optical||YES||3.2||2359||fixed||YES||8000||14.0||no||no|
|Nikon D610 (⇒ lft | rgt)||optical||YES||3.2||921||fixed||no||4000||6.0||12||no|
|Nikon Df (⇒ lft | rgt)||optical||YES||3.2||921||fixed||no||4000||5.5||no||no|
|Nikon D600 (⇒ lft | rgt)||optical||YES||3.0||921||fixed||no||4000||5.5||12||no|
|Nikon D700 (⇒ lft | rgt)||optical||YES||3.0||922||fixed||no||8000||8.0||12||no|
|Sony A7 III (⇒ lft | rgt)||2359||no||3.0||922||tilting||YES||8000||10||no||YES|
|Sony A9 (⇒ lft | rgt)||3686||no||3.0||1440||tilting||YES||8000||20.0||no||YES|
|Sony A99 II (⇒ lft | rgt)||2400||YES||3.0||1229||full-flex||no||8000||12.0||no||YES|
|Sony A6500 (⇒ lft | rgt)||2300||no||3.0||922||tilting||YES||4000||11.0||6||YES|
|Sony A7R II (⇒ lft | rgt)||2400||no||3.0||1229||tilting||no||8000||5.0||no||YES|
|Sony A7S II (⇒ lft | rgt)||2400||no||3.0||1229||tilting||no||8000||5.0||no||YES|
|Sony A7 II (⇒ lft | rgt)||2400||no||3.0||1230||tilting||no||8000||5.0||no||YES|
|Sony A7R (⇒ lft | rgt)||2400||no||3.0||1230||tilting||no||8000||4.0||no||no|
|Sony A99 (⇒ lft | rgt)||2359||YES||3.0||1229||full-flex||no||8000||6.0||no||YES|
Both the A7R III and the D750 are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The D750 replaced the earlier Nikon D700, while the A7R III followed on from the Sony A7R II.
So what conclusions can be drawn? Is there a clear favorite between the Sony A7R III and the Sony A7R III? A synthesis of the relative strong points of each of the models is listed below.
Reasons to prefer the Sony Alpha A7R III:
- More detail: Offers more megapixels (42.2 vs 24.2MP) with a 32% higher linear resolution.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- High quality composites: Can combine several shots after pixel-shifting its sensor.
- Better image quality: Scores markedly higher (7 points) in the DXO overall assessment.
- Richer colors: Generates images with noticeably better colors (1.2 bits more color depth).
- Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
- More framing info: Has an electronic viewfinder that displays shooting data.
- More detailed LCD: Has a higher resolution rear screen (1440k vs 1229k dots).
- Fewer buttons to press: Is equipped with a touch-sensitive rear screen to facilitate handling.
- Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 6 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (127x96mm vs 141x113mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 100g or 13 percent) and hence easier to carry around.
- More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
- Sharper images: Has hand-shake reducing image stabilization build-in.
- More modern: Reflects 3 years and 1 month of technical progress since the D750 launch.
Arguments in favor of the Nikon D750:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Easier setting verification: Has 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.
- Longer lasting: Gets more shots (1230 versus 650) out of a single battery charge.
- Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
- More affordable: Was introduced into a lower priced category (28 percent cheaper at launch).
- More heavily discounted: Has been around for much longer (launched in September 2014).
If the count of individual advantages (bullet points above) is taken as a guide, the A7R III is the clear winner of the match-up (16 : 8 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.
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 handling experience and imaging performance when actually working with the A7R III or the D750. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased. This is why hands-on reviews by experts are important. The table below summarizes the assessments of some of the best known camera review sites. You can find the full text of the reviews, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Sony A7R III (⇒ rgt)||HiRec||90/100 Gold||4.5/5||5/5||5/5||2017||3,199||latest||check|
|Nikon D750 (⇒ lft)||HiRec||90/100 Gold||4.5/5||5/5||4.5/5||2014||2,299||latest||check|
|Hasselblad X1D (⇒ lft | rgt)||reviewed||-||-||-||4/5||2016||8,995||latest||check|
|Nikon D5 (⇒ lft | rgt)||-||89/100 Gold||4.5/5||5/5||5/5||2016||6,499||latest||check|
|Nikon D610 (⇒ lft | rgt)||HiRec||87/100 Gold||4.5/5||4.5/5||4.5/5||2013||1,999||latest||check|
|Nikon Df (⇒ lft | rgt)||-||81/100||4/5||4/5||4/5||2013||2,749||latest||check|
|Nikon D600 (⇒ lft | rgt)||HiRec||87/100 Gold||5/5||4.5/5||4.5/5||2012||2,099||discont.||check|
|Nikon D700 (⇒ lft | rgt)||89/100||HiRec||4.5/5||5/5||4.5/5||2008||2,999||discont.||check|
|Sony A7 III (⇒ lft | rgt)||HiRec||..||..||..||..||2018||1,999||latest||check|
|Sony A9 (⇒ lft | rgt)||..||89/100 Gold||5/5||5/5||5/5||2017||4,499||latest||check|
|Sony A99 II (⇒ lft | rgt)||-||85/100 Silver||4.5/5||4.5/5||4.5/5||2016||3,199||latest||check|
|Sony A6500 (⇒ lft | rgt)||HiRec||85/100 Silver||4.5/5||5/5||4.5/5||2016||1,399||latest||check|
|Sony A7R II (⇒ lft | rgt)||HiRec||90/100 Gold||5/5||4.5/5||5/5||2015||3,199||discont.||check|
|Sony A7S II (⇒ lft | rgt)||Rec||-||4.5/5||5/5||5/5||2015||2,999||latest||check|
|Sony A7 II (⇒ lft | rgt)||Rec||82/100 Silver||4.5/5||5/5||5/5||2014||1,999||discont.||check|
|Sony A7R (⇒ lft | rgt)||HiRec||82/100 Gold||4.5/5||5/5||5/5||2013||2,299||discont.||check|
|Sony A99 (⇒ lft | rgt)||-||84/100 Gold||4.5/5||reviewed||4.5/5||2012||2,799||discont.||check|
Care should be taken when interpreting the review scores above, though. The ratings are only valid when refering 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 comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
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. If the camera you are interested in is not available, please contact me, and I will try to add information on that model to the database.
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