Nikon D780 vs Sony A9
The Nikon D780 and the Sony Alpha A9 are two digital cameras that were revealed to the public, respectively, in January 2020 and April 2017. The D780 is a DSLR, while the A9 is a mirrorless interchangeable lens camera. Both cameras are equipped with a full frame sensor. The Nikon has a resolution of 24.3 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 D780||Sony A9|
|Digital single lens reflex||Mirrorless system camera|
|Nikon F mount lenses||Sony E mount lenses|
|24.3 MP, Full Frame Sensor||24 MP, Full Frame Sensor|
|4K/30p Video||4K/30p Video|
|ISO 100-51200 (50-204800)||ISO 100-51200 (50-204800)|
|Optical viewfinder||Electronic viewfinder (3686k dots)|
|3.2" LCD, 2359k dots||3.0" LCD, 1440k dots|
|Tilting touchscreen||Tilting touchscreen|
|12 shutter flaps per second||20 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|Weathersealed body||Weathersealed body|
|2260 shots per battery charge||650 shots per battery charge|
|144 x 116 x 76 mm, 840 g||127 x 96 x 63 mm, 673 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D780 and the Sony Alpha A9? 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 D780 and the Sony A9 is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side 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 A9 is notably smaller (27 percent) than the Nikon D780. Moreover, the A9 is markedly lighter (20 percent) than the D780. 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 compare the optics available for the two cameras in the Nikon Lens Catalog (D780) and the Sony FE Lens Catalog (A9). Mirrorless cameras, such as the A9, 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 battery packs of both cameras can be charged via USB, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. 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 camera comparisons there.
|Nikon D780»||144 mm||116 mm||76 mm||840 g||2260||Y||Jan 2020||2,299||Nikon D780|
|Sony A9«||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499||Sony A9|
|Canon 6D Mark II« »||144 mm||111 mm||75 mm||765 g||1200||Y||Jun 2017||1,999||Canon 6D Mark II|
|Nikon D6« »||160 mm||163 mm||92 mm||1270 g||3580||Y||Feb 2020||6,499||Nikon D6|
|Nikon D7500« »||136 mm||104 mm||73 mm||720 g||950||Y||Apr 2017||1,299||Nikon D7500|
|Nikon D500« »||147 mm||115 mm||81 mm||860 g||1240||Y||Jan 2016||1,999||Nikon D500|
|Nikon D750« »||141 mm||113 mm||78 mm||750 g||1230||Y||Sep 2014||2,299||Nikon D750|
|Nikon Df« »||144 mm||110 mm||67 mm||760 g||1400||Y||Nov 2013||2,749||Nikon Df|
|Nikon D610« »||141 mm||113 mm||82 mm||850 g||900||Y||Oct 2013||1,999||Nikon D610|
|Nikon D600« »||141 mm||113 mm||82 mm||850 g||900||Y||Sep 2012||2,099||Nikon D600|
|Panasonic S1« »||149 mm||110 mm||97 mm||1017 g||400||Y||Feb 2019||2,499||Panasonic S1|
|Panasonic GH5« »||139 mm||98 mm||87 mm||725 g||410||Y||Jan 2017||1,999||Panasonic GH5|
|Sigma fp« »||113 mm||70 mm||45 mm||422 g||280||Y||Jul 2019||1,899||Sigma fp|
|Sony A9 II« »||129 mm||96 mm||76 mm||678 g||690||Y||Oct 2019||4,499||Sony A9 II|
|Sony A7 III« »||127 mm||96 mm||74 mm||650 g||610||Y||Feb 2018||1,999||Sony A7 III|
|Sony A7R III« »||127 mm||96 mm||74 mm||650 g||650||Y||Oct 2017||3,199||Sony A7R III|
|Sony A7 II« »||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||Sony A7 II|
|Note: Measurements and pricing do not include easily detachable parts, such as 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 D780 was launched at a markedly lower price (by 49 percent) than the A9, 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 imaging sensor is at the core of digital cameras and its size is one of the main determining factors 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the A9 is 1 percent smaller. 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.
Technology-wise, both cameras are equipped with BSI-CMOS (Backside Illuminated Complementary Metal–Oxide–Semiconductor) sensors.
With 24.3MP, the D780 offers a slightly higher resolution than the A9 (24MP), but the D780 nevertheless has the same individual pixel size (pixel pitch of 5.94μm) as the A9 due to its larger sensor. It is noteworthy in this context that the D780 is a mch more recent model (by 2 years and 8 months) than the A9, and its sensor will have benefitted from technological advances during this time that further enhance the light gathering capacity of its pixels.
The Nikon D780 has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The Sony Alpha A9 offers exactly the same ISO settings.
Consistent information on actual sensor performance is available from DXO Mark for many 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"). The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.
|Nikon D780||Full Frame||24.3||6048||4024||4K/30p||..||..||..||..||Nikon D780|
|Sony A9||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Canon 6D Mark II||Full Frame||26.0||6240||4160||1080/60p||24.4||11.9||2862||85||Canon 6D Mark II|
|Nikon D6||Full Frame||20.7||5568||3712||4K/30p||..||..||..||..||Nikon D6|
|Nikon D7500||APS-C||20.7||5568||3712||4K/30p||24.3||14.0||1483||86||Nikon D7500|
|Nikon D500||APS-C||20.7||5568||3712||4K/30p||24.0||14.0||1324||83||Nikon D500|
|Nikon D750||Full Frame||24.2||6016||4016||1080/60p||24.8||14.5||2956||93||Nikon D750|
|Nikon Df||Full Frame||16.2||4928||3280||none||24.6||13.1||3279||89||Nikon Df|
|Nikon D610||Full Frame||24.2||6016||4016||1080/30p||25.1||14.4||2925||94||Nikon D610|
|Nikon D600||Full Frame||24.2||6016||4016||1080/30p||25.1||14.2||2980||94||Nikon D600|
|Panasonic S1||Full Frame||24.0||6000||4000||4K/60p||25.2||14.5||3333||95||Panasonic S1|
|Panasonic GH5||Four Thirds||20.2||5184||3888||4K/60p||23.9||13.0||807||77||Panasonic GH5|
|Sigma fp||Full Frame||24.0||6000||4000||4K/30p||..||..||..||..||Sigma fp|
|Sony A9 II||Full Frame||24.0||6000||4000||4K/30p||25.0||14.0||3434||93||Sony A9 II|
|Sony A7 III||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|Sony A7R III||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100||Sony A7R III|
|Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90||Sony A7 II|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (4K/30p).
Apart from body and sensor, cameras can and do differ across a range of features. For example, the A9 has an electronic viewfinder (3686k dots), while the D780 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 A9 has a higher magnification than the one of the D780 (0.78x vs 0.70x), 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 D780 and Sony A9 in connection with corresponding information for a sample of similar cameras.
|Nikon D780||optical||Y||3.2||2359||tilting||Y||1/8000s||12.0||n||n||Nikon D780|
|Sony A9||3686||n||3.0||1440||tilting||Y||1/8000s||20.0||n||Y||Sony A9|
|Canon 6D Mark II||optical||Y||3.0||1040||swivel||Y||1/4000s||6.5||n||n||Canon 6D Mark II|
|Nikon D6||optical||Y||3.2||2359||fixed||Y||1/8000s||14.0||n||n||Nikon D6|
|Nikon D7500||optical||Y||3.2||922||tilting||Y||1/8000s||8.0||Y||n||Nikon D7500|
|Nikon D500||optical||Y||3.2||2359||tilting||Y||1/8000s||10.0||n||n||Nikon D500|
|Nikon D750||optical||Y||3.2||1229||tilting||n||1/4000s||6.0||Y||n||Nikon D750|
|Nikon Df||optical||Y||3.2||921||fixed||n||1/4000s||5.5||n||n||Nikon Df|
|Nikon D610||optical||Y||3.2||921||fixed||n||1/4000s||6.0||Y||n||Nikon D610|
|Nikon D600||optical||Y||3.0||921||fixed||n||1/4000s||5.5||Y||n||Nikon D600|
|Panasonic S1||5760||Y||3.2||2100||full-flex||Y||1/8000s||9.0||n||Y||Panasonic S1|
|Panasonic GH5||3680||n||3.2||1620||swivel||Y||1/8000s||12.0||n||Y||Panasonic GH5|
|Sigma fp||none||n||3.2||2100||fixed||Y||1/8000s||12.0||n||n||Sigma fp|
|Sony A9 II||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A9 II|
|Sony A7 III||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y||Sony A7 III|
|Sony A7R III||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A7R III|
|Sony A7 II||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y||Sony A7 II|
One feature that is present on the D780, but is missing on the A9 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 reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the A9 is one of those camera that have an additional electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (risk of rolling shutter) or shooting under artificial light sources (risk of flickering).
The Nikon D780 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 D780 writes its imaging data to SDXC cards, while the A9 uses SDXC or Memory Stick PRO Duo cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails. However, while the D780 supports UHS-II cards (Ultra High Speed data transfer of up to 312 MB/s) on both slots, the A9 supports UHS-II only on its first slot and UHS-I (data transfer speed up to 104 MB/s) on the second one.
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 D780 and Sony Alpha A9 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Nikon D780||Y||stereo||mono||Y||Y||mini||3.1||Y||-||Y||Nikon D780|
|Sony A9||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Canon 6D Mark II||Y||stereo||mono||Y||-||mini||2.0||Y||Y||Y||Canon 6D Mark II|
|Nikon D6||Y||stereo||mono||Y||Y||mini||3.1||Y||-||Y||Nikon D6|
|Nikon D7500||Y||stereo||mono||Y||Y||mini||2.0||Y||-||Y||Nikon D7500|
|Nikon D500||Y||stereo||mono||Y||Y||mini||3.0||Y||Y||Y||Nikon D500|
|Nikon D750||Y||stereo||mono||Y||Y||mini||2.0||Y||-||-||Nikon D750|
|Nikon Df||Y||none||none||-||-||mini||2.0||-||-||-||Nikon Df|
|Nikon D610||Y||mono||mono||Y||Y||mini||2.0||-||-||-||Nikon D610|
|Nikon D600||Y||mono||mono||Y||Y||mini||2.0||-||-||-||Nikon D600|
|Panasonic S1||Y||stereo||mono||Y||Y||full||3.1||Y||-||Y||Panasonic S1|
|Panasonic GH5||Y||stereo||mono||Y||Y||full||3.1||Y||-||Y||Panasonic GH5|
|Sigma fp||Y||stereo||mono||Y||-||micro||3.1||-||-||-||Sigma fp|
|Sony A9 II||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A9 II|
|Sony A7 III||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|Sony A7R III||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R III|
|Sony A7 II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7 II|
Both cameras feature a PC Sync terminal to control professional strobe lights, which will be appreciated by studio photographers.
The D780 is a recent model that features in the current product line-up of Nikon. In contrast, the A9 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the A9 was succeeded by the Sony A9 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 how do things add up? Is there a clear favorite between the Nikon D780 and the Sony A9? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Reasons to prefer the Nikon D780:
- 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.
- More detailed LCD: Has a higher resolution rear screen (2359k vs 1440k dots).
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Can take more shots (2260 versus 650) on a single battery charge.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- More affordable: Was introduced into a lower priced category (49 percent cheaper at launch).
- More modern: Reflects 2 years and 8 months of technical progress since the A9 launch.
Advantages of the Sony Alpha A9:
- More framing info: Has an electronic viewfinder that displays shooting data.
- Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.70x).
- Faster burst: Shoots at higher frequency (20 vs 12 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- More compact: Is smaller (127x96mm vs 144x116mm) and will fit more readily into a bag.
- Less heavy: Has a lower weight (by 167g or 20 percent) and is thus easier to take along.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More legacy lens friendly: Can use many non-native lenses via adapters.
- Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
- More heavily discounted: Has been around for much longer (launched in April 2017).
If the count of individual advantages (bullet points above) is taken as a guide, the A9 comes out slightly ahead of the D780 (10 : 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 wedding photographer will view the differences between cameras in a way that diverges from the perspective of a travel photog, and a person interested in cityscapes has distinct needs from a macro 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 D780 and the Sony A9 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 specs-based evaluation of cameras can be instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the D780 or the A9. 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 following table reports the overall ratings of the cameras as published by some of the major 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.
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. 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 use the search menu below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.
- Canon 5D Mark II vs Sony A9
- Canon 700D vs Sony A9
- Canon G12 vs Sony A9
- Canon G9 X Mark II vs Nikon D780
- Canon SX720 vs Sony A9
- Canon T1i vs Sony A9
- Fujifilm GFX 50R vs Nikon D780
- Fujifilm X-T2 vs Sony A9 II
- Leica X-U Typ 113 vs Nikon D780
- Nikon D780 vs Sony A7R III
- Panasonic GX85 vs Sony A9
- Panasonic TZ95 vs Sony A9
Specifications: Nikon D780 vs Sony A9
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 D780||Sony A9|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Nikon F mount lenses||Sony E mount lenses|
|Launch Date||January 2020||April 2017|
|Launch Price||USD 2299||USD 4499|
|Sensor Specs||Nikon D780||Sony A9|
|Sensor Format||Full Frame Sensor||Full Frame Sensor|
|Sensor Size||35.9 x 23.9 mm||35.6 x 23.8 mm|
|Sensor Area||858.01 mm2||847.28 mm2|
|Sensor Diagonal||43.1 mm||42.8 mm|
|Sensor Resolution||24.3 Megapixels||24 Megapixels|
|Image Resolution||6048 x 4024 pixels||6000 x 4000 pixels|
|Pixel Pitch||5.94 μm||5.94 μm|
|Pixel Density||2.84 MP/cm2||2.83 MP/cm2|
|Moiré control||Anti-Alias filter||Anti-Alias filter|
|Movie Capability||4K/30p Video||4K/30p Video|
|ISO Setting||100-51200 ISO||100-51200 ISO|
|ISO Boost||50-204800 ISO||50-204800 ISO|
|Image Processor||EXPEED 6||BIONZ X|
|DXO Sensor Quality (score)||..||92|
|DXO Color Depth (bits)||..||24.9|
|DXO Dynamic Range (EV)||..||13.3|
|DXO Low Light (ISO)||..||3517|
|Screen Specs||Nikon D780||Sony A9|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||100%||100%|
|Viewfinder Resolution||3686k dots|
|Top-Level Screen||Control Panel||no Top Display|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.2 inch||3.0 inch|
|LCD Resolution||2359k dots||1440k dots|
|LCD Attachment||Tilting screen||Tilting screen|
|Shooting Specs||Nikon D780||Sony A9|
|Focus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||Focus Peaking||Focus Peaking|
|Max Shutter Speed (mechanical)||1/8000/s||1/8000/s|
|Continuous Shooting||12 shutter flaps/s||20 shutter flaps/s|
|Shutter Life Expectancy||200 000 actuations||500 000 actuations|
|Electronic Shutter||no E-Shutter||up to 1/32000s|
|Time-Lapse Photography||Intervalometer built-in||no Intervalometer|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||no On-Board Flash||no On-Board Flash|
|Storage Medium||SDXC cards||MS or SDXC cards|
|Second Storage Option||Dual card slots||Dual card slots|
|UHS card support||Dual UHS-II||Single UHS-II|
|Connectivity Specs||Nikon D780||Sony A9|
|Studio Flash||PC Sync socket||PC Sync socket|
|USB Connector||USB 3.1||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||External MIC port||External MIC port|
|Headphone Socket||Headphone port||Headphone port|
|Wifi Support||Wifi built-in||Wifi built-in|
|Near-Field Communication||no NFC||NFC built-in|
|Bluetooth Support||Bluetooth built-in||Bluetooth built-in|
|Body Specs||Nikon D780||Sony A9|
|Environmental Sealing||Weathersealed body||Weathersealed body|
|Battery Life (CIPA)||2260 shots per charge||650 shots per charge|
|In-Camera Charging||USB charging||USB charging|
144 x 116 x 76 mm
(5.7 x 4.6 x 3.0 in)
127 x 96 x 63 mm
(5.0 x 3.8 x 2.5 in)
|Camera Weight||840 g (29.6 oz)||673 g (23.7 oz)|
Did you notice an error on this page? If so, please get in touch, so that we can correct the information.