Sony A99 II versus Nikon D850
The Sony Alpha ALT-A99 II and the Nikon D850 are two professional cameras that were officially introduced, respectively, in September 2016 and July 2017. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with a full frame sensor. The Sony has a resolution of 42.2 megapixel, whereas the Nikon provides 45.4 MP.
The physical size and weight of the Sony A99 II and the Nikon D850 are illustrated in the side-by-side display below. Three consecutive perspectives from the front, the top, and the back are presented. All width, height and depth dimensions are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the A99 II – represents 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 D850 is notably larger (22 percent) than the Sony A99 II. Moreover, the D850 is markedly heavier (18 percent) than the A99 II. 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. Hence, you might want to study the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.
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 A99 II (⇒ rgt)||143 mm||104 mm||76 mm||849 g||490||YES||2016||3,199||latest||check|
|Nikon D850 (⇒ lft)||146 mm||124 mm||79 mm||1005 g||1840||YES||2017||3,299||latest||check|
|Canon 5DS R (⇒ lft | rgt)||152 mm||116 mm||76 mm||930 g||700||YES||2015||3,699||latest||check|
|Canon 5DS (⇒ lft | rgt)||152 mm||116 mm||76 mm||930 g||700||YES||2015||3,699||latest||check|
|Nikon D5 (⇒ lft | rgt)||160 mm||159 mm||92 mm||1415 g||3780||YES||2016||6,499||latest||check|
|Nikon D500 (⇒ lft | rgt)||147 mm||115 mm||81 mm||860 g||1240||YES||2016||1,999||latest||check|
|Nikon D810 (⇒ lft | rgt)||146 mm||123 mm||82 mm||980 g||1200||YES||2014||3,299||discont.||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|
|Pentax K-1 (⇒ lft | rgt)||137 mm||110 mm||86 mm||1010 g||760||YES||2016||1,799||latest||check|
|Sony A7R III (⇒ lft | rgt)||127 mm||96 mm||74 mm||650 g||650||YES||2017||3,199||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 A99 (⇒ lft | rgt)||147 mm||111 mm||78 mm||812 g||500||YES||2012||2,799||discont.||check|
|Sony A850 (⇒ lft | rgt)||156 mm||117 mm||82 mm||895 g||880||YES||2009||1,999||discont.||check|
|Sony A900 (⇒ lft | rgt)||156 mm||117 mm||82 mm||895 g||880||YES||2008||2,999||discont.||check|
The listed prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A99 II was somewhat cheaper (by 3 percent) than the D850 at launch, but both cameras fall into the same price category. 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 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 are more costly to manufacture and tent to lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
Despite having a slightly smaller sensor, the D850 offers a slightly higher resolution of 45.4 megapixel, compared with 42.2 MP of the A99 II. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 4.35μm versus 4.52μm for the A99 II). However, it should be noted that the D850 is a somewhat more recent model (by 10 months) than the A99 II, and its sensor might have benefitted from technological advances during this time that partly offset its pixel-size disadvantage. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.
Consistent information on actual sensor performance is available from DXO Mark for most cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the D850 has a markedly higher DXO score than the A99 II (overall score 8 points higher), which will translate into better image quality. The advantage is based on 1 bits higher color depth, 1.4 EV in additional dynamic range, and 0.2 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Sony A99 II (⇒ rgt)||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92|
|Nikon D850 (⇒ lft)||Full Frame||45.4||8256||5504||4K/30p||26.4||14.8||2660||100|
|Canon 5DS R (⇒ lft | rgt)||Full Frame||50.3||8688||5792||1080/60p||24.6||12.4||2308||86|
|Canon 5DS (⇒ lft | rgt)||Full Frame||50.3||8688||5792||1080/60p||24.7||12.4||2381||87|
|Nikon D5 (⇒ lft | rgt)||Full Frame||20.7||5588||3712||4K/30p||25.1||12.3||2343||88|
|Nikon D500 (⇒ lft | rgt)||APS-C||20.7||5568||3712||4K/30p||24.0||14.0||1324||83|
|Nikon D810 (⇒ lft | rgt)||Full Frame||36.2||7360||4912||1080/60p||25.7||14.8||2853||97|
|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|
|Pentax K-1 (⇒ lft | rgt)||Full Frame||36.2||7360||4912||1080/60i||25.4||14.6||3280||96|
|Sony A7R III (⇒ lft | rgt)||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100|
|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 A99 (⇒ lft | rgt)||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89|
|Sony A850 (⇒ lft | rgt)||Full Frame||24.4||6048||4032||no||23.8||12.2||1415||79|
|Sony A900 (⇒ lft | rgt)||Full Frame||24.4||6048||4032||no||23.7||12.3||1431||79|
Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (4K/30p).
Beyond body and sensor, cameras can and do differ across a range of features. For example, the A99 II has an electronic viewfinder (2400k dots), while the D850 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 A99 II, the Nikon D850, and comparable cameras. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.
|Sony A99 II (⇒ rgt)||2400||YES||3.0||1229||full-flex||no||8000||12.0||no||YES|
|Nikon D850 (⇒ lft)||optical||YES||3.2||2359||tilting||YES||8000||9.0||no||no|
|Canon 5DS R (⇒ lft | rgt)||optical||YES||3.2||1040||fixed||no||8000||5.0||no||no|
|Canon 5DS (⇒ lft | rgt)||optical||YES||3.2||1040||fixed||no||8000||5.0||no||no|
|Nikon D5 (⇒ lft | rgt)||optical||YES||3.2||2359||fixed||YES||8000||14.0||no||no|
|Nikon D500 (⇒ lft | rgt)||optical||YES||3.2||2359||tilting||YES||8000||10.0||no||no|
|Nikon D810 (⇒ lft | rgt)||optical||YES||3.2||1229||fixed||no||4000||5.0||12||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|
|Pentax K-1 (⇒ lft | rgt)||optical||YES||3.2||1037||full-flex||no||8000||4.4||no||YES|
|Sony A7R III (⇒ lft | rgt)||3686||no||3.0||1440||tilting||YES||8000||10.0||no||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 A99 (⇒ lft | rgt)||2359||YES||3.0||1229||full-flex||no||8000||6.0||no||YES|
|Sony A850 (⇒ lft | rgt)||optical||YES||3.0||922||fixed||no||8000||3.0||no||YES|
|Sony A900 (⇒ lft | rgt)||optical||YES||3.0||922||fixed||no||8000||5.0||no||YES|
Both the A99 II and the D850 are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The D850 replaced the earlier Nikon D810, while the A99 II does not have a direct predecessor.
So how do things add up? Is the Sony A99 II better than the Nikon D850 or vice versa? The listing below highlights the relative strengths of the two models.
Arguments in favor of the Sony Alpha ALT-A99 II:
- More framing info: Has an electronic viewfinder that displays shooting data.
- Faster burst: Shoots at higher frequency (12 vs 9 flaps/sec) to capture the decisive moment.
- More compact: Is smaller (143x104mm vs 146x124mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 156g or 16 percent) and hence easier to carry around.
- Sharper images: Has hand-shake reducing image stabilization build-in.
- More heavily discounted: Has been on the market for longer (launched in September 2016).
Reasons to prefer the Nikon D850:
- Better image quality: Scores markedly higher (8 points) in the DXO overall evaluation.
- More dynamic range: Captures a broader range of light and dark details (1.4 EV of extra DR).
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- 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 (2359k vs 1229k dots).
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Longer lasting: Gets more shots (1840 versus 490) out of a single battery charge.
- More modern: Was introduced somewhat (10 months) more recently.
If the count of individual advantages (bullet points above) is taken as a guide, the D850 emerges as the winner of the match-up (8 : 6 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 says nothing about, for example, the handling, responsiveness, and overall imaging quality of the A99 II and the D850 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 rankings of the cameras as published by some of the major camera review sites. The full reviews are available, respectively, at cameralabs.com, dpreview.com, ephotozine.com, imaging-resource.com, and photographyblog.com.
|Sony A99 II (⇒ rgt)||-||85/100 Silver||4.5/5||4.5/5||4.5/5||2016||3,199||latest||check|
|Nikon D850 (⇒ lft)||HiRec||89/100 Gold||4.5/5||5/5||5/5||2017||3,299||latest||check|
|Canon 5DS R (⇒ lft | rgt)||Rec||83/100 Silver||5/5||5/5||4.5/5||2015||3,699||latest||check|
|Canon 5DS (⇒ lft | rgt)||Rec||83/100 Silver||4.5/5||5/5||4.5/5||2015||3,699||latest||check|
|Nikon D5 (⇒ lft | rgt)||-||89/100 Gold||4.5/5||5/5||5/5||2016||6,499||latest||check|
|Nikon D500 (⇒ lft | rgt)||HiRec||91/100 Gold||4.5/5||5/5||5/5||2016||1,999||latest||check|
|Nikon D810 (⇒ lft | rgt)||-||86/100 Gold||5/5||4.5/5||4.5/5||2014||3,299||discont.||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|
|Pentax K-1 (⇒ lft | rgt)||-||84/100 Silver||5/5||4.5/5||5/5||2016||1,799||latest||check|
|Sony A7R III (⇒ lft | rgt)||HiRec||90/100 Gold||4.5/5||5/5||5/5||2017||3,199||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 A99 (⇒ lft | rgt)||-||84/100 Gold||4.5/5||reviewed||4.5/5||2012||2,799||discont.||check|
|Sony A850 (⇒ lft | rgt)||-||75/100||-||4/5||4.5/5||2009||1,999||discont.||check|
|Sony A900 (⇒ lft | rgt)||90/100 HiRec||HiRec||4.5/5||4/5||5/5||2008||2,999||discont.||check|
The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. 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.
In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting. If the camera you are interested in is not available, please send me an email, and I will try to add information on that model to the database.
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