Sony A900 vs Nikon D850
The Sony Alpha A900 and the Nikon D850 are two professional cameras that were officially introduced, respectively, in September 2008 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 24.4 megapixels, whereas the Nikon provides 45.4 MP. Read on to find out how these two cameras compare with respect to their body size, their sensors, their features, their input-output connections, and their reception by expert reviewers.
|Sony A900||Nikon D850|
|Digital single lens reflex||Digital single lens reflex|
|Sony A mount lenses||Nikon F mount lenses|
|24.4 MP, Full Frame Sensor||45.4 MP, Full Frame Sensor|
|no Video||4K/30p Video|
|ISO 200-3200 (100-6400)||ISO 64-25600 (32-102400)|
|Optical viewfinder||Optical viewfinder|
|3.0" LCD, 922k dots||3.2" LCD, 2359k dots|
|Fixed screen (not touch-sensitive)||Tilting touchscreen|
|5 shutter flaps per second||9 shutter flaps per second|
|In-body stabilization||Lens stabilization only|
|Weathersealed body||Weathersealed body|
|880 shots per battery charge||1840 shots per battery charge|
|156 x 117 x 82 mm, 895 g||146 x 124 x 79 mm, 1005 g|
Body comparison: Sony A900 vs Nikon D850
The physical size and weight of the Sony A900 and the Nikon D850 are illustrated 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 measures 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 A900 and the Nikon D850 are of equal size. However, the D850 is markedly heavier (12 percent) than the A900. 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 and compare 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 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.
|Sony A900»||156 mm||117 mm||82 mm||895 g||880||Y||Sep 2008||2,999||-||Sony A900|
|Nikon D850«||146 mm||124 mm||79 mm||1005 g||1840||Y||Jul 2017||3,299||Nikon D850|
|Canon 5D Mark IV« »||151 mm||116 mm||76 mm||890 g||900||Y||Aug 2016||3,499||Canon 5D Mark IV|
|Canon 5DS« »||152 mm||116 mm||76 mm||930 g||700||Y||Feb 2015||3,699||Canon 5DS|
|Canon 5D Mark II« »||152 mm||114 mm||75 mm||850 g||850||Y||Sep 2008||3,499||-||Canon 5D Mark II|
|Nikon D810« »||146 mm||123 mm||82 mm||980 g||1200||Y||Jun 2014||3,299||-||Nikon D810|
|Nikon D800« »||146 mm||123 mm||82 mm||1000 g||900||Y||Feb 2012||2,999||-||Nikon D800|
|Nikon D800E« »||146 mm||123 mm||82 mm||1000 g||900||Y||Feb 2012||3,299||-||Nikon D800E|
|Sony A9« »||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499||Sony A9|
|Sony A99 II« »||143 mm||104 mm||76 mm||849 g||490||Y||Sep 2016||3,199||Sony A99 II|
|Sony A6500« »||120 mm||67 mm||53 mm||453 g||350||Y||Oct 2016||1,399||Sony A6500|
|Sony RX10 III« »||133 mm||94 mm||127 mm||1051 g||420||Y||Mar 2016||1,499||Sony RX10 III|
|Sony A7S II« »||127 mm||96 mm||60 mm||627 g||370||Y||Sep 2015||2,999||Sony A7S II|
|Sony RX10 II« »||129 mm||88 mm||102 mm||813 g||400||Y||Jun 2015||1,299||-||Sony RX10 II|
|Sony A7 II« »||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||-||Sony A7 II|
|Sony A99« »||147 mm||111 mm||78 mm||812 g||500||Y||Sep 2012||2,799||-||Sony A99|
|Sony A850« »||156 mm||117 mm||82 mm||895 g||880||Y||Aug 2009||1,999||-||Sony A850|
The price is, of course, an important factor in any camera decision. 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 A900 was somewhat cheaper (by 9 percent) than the D850 at launch, but both cameras fall into the same price category. 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.
Sensor comparison: Sony A900 vs Nikon D850
The size of the imaging sensor is a crucial determinant of image quality. All other things equal, a large sensor will have larger individual pixel-units that offer better low-light sensitivity, wider dynamic range, and 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, 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 higher resolution of 45.4 megapixels, compared with 24.4 MP of the A900. 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 4.35μm versus 5.94μm for the A900). However, it should be noted that the D850 is much more recent (by 8 years and 10 months) than the A900, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the D850 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The Sony Alpha A900 has a native sensitivity range from ISO 200 to ISO 3200, which can be extended to ISO 100-6400. The corresponding ISO settings for the Nikon D850 are ISO 64 to ISO 25600, with the possibility to increase the ISO range to 32-102400..
For many cameras, data on sensor performance has been reported by DXO Mark. 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 offers substantially better image quality than the A900 (overall score 21 points higher). The advantage is based on 2.7 bits higher color depth, 2.5 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.
|Sony A900»||Full Frame||24.4||6048||4032||-||23.7||12.3||1431||79||Sony A900|
|Nikon D850«||Full Frame||45.4||8256||5504||4K/30p||26.4||14.8||2660||100||Nikon D850|
|Canon 5D Mark IV« »||Full Frame||30.1||6720||4480||4K/30p||24.8||13.6||2995||91||Canon 5D Mark IV|
|Canon 5DS« »||Full Frame||50.3||8688||5792||1080/60p||24.7||12.4||2381||87||Canon 5DS|
|Canon 5D Mark II« »||Full Frame||21.0||5616||3744||1080/30p||23.7||11.9||1815||79||Canon 5D Mark II|
|Nikon D810« »||Full Frame||36.2||7360||4912||1080/60p||25.7||14.8||2853||97||Nikon D810|
|Nikon D800« »||Full Frame||36.2||7360||4912||1080/30p||25.3||14.4||2853||95||Nikon D800|
|Nikon D800E« »||Full Frame||36.2||7360||4912||1080/30p||25.6||14.3||2979||96||Nikon D800E|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony A99 II« »||Full Frame||42.2||7952||5304||4K/30p||25.4||13.4||2317||92||Sony A99 II|
|Sony A6500« »||APS-C||24.0||6000||4000||4K/30p||24.5||13.7||1405||85||Sony A6500|
|Sony RX10 III« »||1-inch||20.0||5472||3648||4K/30p||23.1||12.6||472||70||Sony RX10 III|
|Sony A7S II« »||Full Frame||12.0||4240||2832||4K/30p||23.6||13.3||2993||85||Sony A7S II|
|Sony RX10 II« »||1-inch||20.0||5472||3648||4K/30p||23.0||12.6||531||70||Sony RX10 II|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90||Sony A7 II|
|Sony A99« »||Full Frame||24.0||6000||4000||1080/60p||25.0||14.0||1555||89||Sony A99|
|Sony A850« »||Full Frame||24.4||6048||4032||-||23.8||12.2||1415||79||Sony A850|
Many modern cameras cannot only take still pictures, but also record videos. The D850 indeed provides for movie recording, while the A900 does not. The highest resolution format that the D850 can use is 4K/30p.
Feature comparison: Sony A900 vs Nikon D850
Apart from body and sensor, cameras can and do differ across a variety of features. The A900 and the D850 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 following table reports on some other key feature differences and similarities of the Sony A900, the Nikon D850, and comparable cameras.
|Sony A900»||optical||Y||3.0||922||fixed||n||8000||5.0||n||Y||Sony A900|
|Nikon D850«||optical||Y||3.2||2359||tilting||Y||8000||9.0||n||n||Nikon D850|
|Canon 5D Mark IV« »||optical||Y||3.2||1620||fixed||Y||8000||7.0||n||n||Canon 5D Mark IV|
|Canon 5DS« »||optical||Y||3.2||1040||fixed||n||8000||5.0||n||n||Canon 5DS|
|Canon 5D Mark II« »||optical||Y||3.0||920||fixed||n||8000||3.9||n||n||Canon 5D Mark II|
|Nikon D810« »||optical||Y||3.2||1229||fixed||n||8000||5.0||Y||n||Nikon D810|
|Nikon D800« »||optical||Y||3.2||921||fixed||n||8000||4.0||Y||n||Nikon D800|
|Nikon D800E« »||optical||Y||3.2||921||fixed||n||8000||4.0||Y||n||Nikon D800E|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||8000||20.0||n||Y||Sony A9|
|Sony A99 II« »||2400||Y||3.0||1229||full-flex||n||8000||12.0||n||Y||Sony A99 II|
|Sony A6500« »||2359||n||3.0||922||tilting||Y||4000||11.0||Y||Y||Sony A6500|
|Sony RX10 III« »||2359||Y||3.0||1229||tilting||n||2000||14.0||Y||Y||Sony RX10 III|
|Sony A7S II« »||2400||n||3.0||1229||tilting||n||8000||5.0||n||Y||Sony A7S II|
|Sony RX10 II« »||2359||Y||3.0||1229||tilting||n||3200||14.0||Y||Y||Sony RX10 II|
|Sony A7 II« »||2400||n||3.0||1230||tilting||n||8000||5.0||n||Y||Sony A7 II|
|Sony A99« »||2359||Y||3.0||1229||full-flex||n||8000||6.0||n||Y||Sony A99|
|Sony A850« »||optical||Y||3.0||922||fixed||n||8000||3.0||n||Y||Sony A850|
One feature that differentiates the A900 and the D850 is in-body image stabilization (IBIS). The A900 reduces the risk of handshake-induced blur with all attached lenses, while the D850 has to rely on optical image stabilization in OIS-equipped lenses to achieve the same effect.
The A900 writes its imaging data to Compact Flash or Memory Stick PRO Duo cards, while the D850 uses SDHC or XQD cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.
Connectivity comparison: Sony A900 vs Nikon D850
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 Sony Alpha A900 and Nikon D850 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Sony A900»||Y||-||-||-||-||mini||2.0||-||-||-||Sony A900|
|Nikon D850«||Y||stereo||mono||Y||Y||mini||3.0||Y||Y||Y||Nikon D850|
|Canon 5D Mark IV« »||Y||mono||mono||Y||Y||mini||3.0||Y||Y||-||Canon 5D Mark IV|
|Canon 5DS« »||Y||mono||mono||Y||-||mini||3.0||-||-||-||Canon 5DS|
|Canon 5D Mark II« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Canon 5D Mark II|
|Nikon D810« »||Y||stereo||mono||Y||Y||mini||3.0||Y||-||-||Nikon D810|
|Nikon D800« »||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Nikon D800|
|Nikon D800E« »||Y||mono||mono||Y||Y||mini||3.0||-||-||-||Nikon D800E|
|Sony A9« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony A99 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A99 II|
|Sony A6500« »||Y||stereo||mono||Y||-||micro||2.0||Y||Y||-||Sony A6500|
|Sony RX10 III« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony RX10 III|
|Sony A7S II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7S II|
|Sony RX10 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony RX10 II|
|Sony A7 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7 II|
|Sony A99« »||Y||stereo||mono||Y||Y||mini||2.0||-||-||-||Sony A99|
|Sony A850« »||Y||-||-||-||-||mini||2.0||-||-||-||Sony A850|
It is notable that the D850 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the A900 does not offer wifi capability.
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
The D850 is a recent model that features in the current product line-up of Nikon. In contrast, the A900 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the A900 was succeeded by the Sony A99.
Review summary: Sony A900 vs Nikon D850
So how do things add up? Which of the two cameras – the Sony A900 or the Nikon D850 – has the upper hand? The listing below highlights the relative strengths of the two models.
Reasons to prefer the Sony Alpha A900:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Less heavy: Is lighter (by 110g or 11 percent) and hence easier to carry around.
- Sharper images: Has hand-shake reducing image stabilization built-in.
- More heavily discounted: Has been available for much longer (launched in September 2008).
Arguments in favor of the Nikon D850:
- More detail: Has more megapixels (45.4 vs 24.4MP), which boosts linear resolution by 36%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (21 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (2.7 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (2.5 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (0.9 stops ISO advantage).
- Broader imaging potential: Can capture not only stills but also 4K/30p video.
- 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 922k dots).
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
- Faster burst: Shoots at higher frequency (9 vs 5 flaps/sec) to capture the decisive moment.
- Longer lasting: Gets more shots (1840 versus 880) out of a single battery charge.
- Faster data transfer: Supports a more advanced USB protocol (3.0 vs 2.0).
- 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.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More modern: Reflects 8 years and 10 months of technical progress since the A900 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the D850 is the clear winner of the contest (18 : 4 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.
In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the A900 and the D850 in practical situations. 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.
Expert reviews: Sony A900 vs Nikon D850
This is why expert reviews are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The full reviews are available by clicking on the site logo in the table header.
|Sony A900»||HiRec||HiRec||4.5/5||4/5||5/5||Sep 2008||2,999||-||Sony A900|
|Nikon D850«||HiRec||89/100||4.5/5||5/5||5/5||Jul 2017||3,299||Nikon D850|
|Canon 5D Mark IV« »||HiRec||87/100||4.5/5||5/5||4.5/5||Aug 2016||3,499||Canon 5D Mark IV|
|Canon 5DS« »||Rec||83/100||4.5/5||5/5||4.5/5||Feb 2015||3,699||Canon 5DS|
|Canon 5D Mark II« »||91/100||79/100||4/5||5/5||-||Sep 2008||3,499||-||Canon 5D Mark II|
|Nikon D810« »||-||86/100||5/5||4.5/5||4.5/5||Jun 2014||3,299||-||Nikon D810|
|Nikon D800« »||HiRec||82/100||5/5||5/5||5/5||Feb 2012||2,999||-||Nikon D800|
|Nikon D800E« »||-||84/100||5/5||4.5/5||5/5||Feb 2012||3,299||-||Nikon D800E|
|Sony A9« »||HiRec||89/100||5/5||5/5||5/5||Apr 2017||4,499||Sony A9|
|Sony A99 II« »||-||85/100||4.5/5||4.5/5||4.5/5||Sep 2016||3,199||Sony A99 II|
|Sony A6500« »||HiRec||85/100||4.5/5||5/5||4.5/5||Oct 2016||1,399||Sony A6500|
|Sony RX10 III« »||Rec||84/100||4.5/5||4.5/5||4.5/5||Mar 2016||1,499||Sony RX10 III|
|Sony A7S II« »||Rec||-||4.5/5||5/5||5/5||Sep 2015||2,999||Sony A7S II|
|Sony RX10 II« »||HiRec||82/100||4.5/5||4.5/5||4/5||Jun 2015||1,299||-||Sony RX10 II|
|Sony A7 II« »||Rec||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-||Sony A7 II|
|Sony A99« »||-||84/100||4.5/5||rev||4.5/5||Sep 2012||2,799||-||Sony A99|
|Sony A850« »||-||75/100||-||4/5||4.5/5||Aug 2009||1,999||-||Sony A850|
The above review scores should be interpreted with care, though. The assessments were made in relation to similar cameras of the same technological generation. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, 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? If you would like to see a different side-by-side camera review, just make a corresponding selection in the search boxes below. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.
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- Leica TL vs Nikon D700
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- Sony RX100 IV vs Sony NEX-7
Specifications: Sony A900 vs Nikon D850
|Camera Model||Sony A900||Nikon D850|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Sony A mount lenses||Nikon F mount lenses|
|Launch Date||September 2008||July 2017|
|Launch Price||USD 2999||USD 3299|
|Sensor Format||Full Frame Sensor||Full Frame Sensor|
|Sensor Size||35.9 x 24.0 mm||35.9 x 24.0 mm|
|Sensor Area||861.6 mm2||858.01 mm2|
|Sensor Diagonal||43.2 mm||43.1 mm|
|Sensor Resolution||24.4 Megapixels||45.4 Megapixels|
|Image Resolution||6048 x 4032 pixels||8256 x 5504 pixels|
|Pixel Pitch||5.94 μm||4.35 μm|
|Pixel Density||2.83 MP/cm2||5.30 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||no Video||4K/30p Video|
|ISO Setting||200-3200 ISO||64-25600 ISO|
|ISO Boost||100-6400 ISO||32-102400 ISO|
|Image Processor||BIONZ||EXPEED 5|
|DXO Sensor Quality (score)||79||100|
|DXO Color Depth (bits)||23.7||26.4|
|DXO Dynamic Range (EV)||12.3||14.8|
|DXO Low Light (ISO)||1431||2660|
|Viewfinder Type||Optical viewfinder||Optical viewfinder|
|Viewfinder Field of View||100%||100%|
|Top-Level Screen||Control Panel||Control Panel|
|LCD Framing||n/a||Live View|
|Rear LCD Size||3.0 inch||3.2 inch|
|LCD Resolution||922k dots||2359k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Touch Input||no Touchscreen||Touchscreen|
|Autofocus System||Phase-detect AF||Phase-detect AF|
|Maximum Shutter Speed||1/8000s||1/8000s|
|Continuous Shooting||5 shutter flaps/s||9 shutter flaps/s|
|Image Stabilization||In-body stabilization||Lens stabilization only|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||CF or MS cards||SDXC or XQD cards|
|Second Storage Option||Dual card slots||Dual card slots|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 2.0||USB 3.0|
|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|
|Near-Field Communication||no NFC||NFC built-in|
|Bluetooth Support||no Bluetooth||Bluetooth built-in|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Type||NP-FM500H power pack||EN-EL15a power pack|
|Battery Life (CIPA)||880 shots per charge||1840 shots per charge|
156 x 117 x 82 mm
(6.1 x 4.6 x 3.2 in)
146 x 124 x 79 mm
(5.7 x 4.9 x 3.1 in)
|Camera Weight||895 g (31.6 oz)||1005 g (35.5 oz)|
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