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Nikon D5500 vs Sony A9

The Nikon D5500 and the Sony Alpha A9 are two digital cameras that were revealed to the public, respectively, in January 2015 and April 2017. The D5500 is a DSLR, while the A9 is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D5500) and a full frame (A9) sensor. Both cameras offer a resolution of 24 megapixels.

Below is an overview of the main specs of the two cameras as a starting point for the comparison.

Headline Specifications
Nikon D5500
versus
Sony A9
Nikon D5500   Sony A9
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Sony E mount lenses
24 MP – APS-C sensor 24 MP – Full Frame sensor
1080/60p Video 4K/30p Video
ISO 100-25,600 ISO 100-51,200 (50 - 204,800)
Optical viewfinder Electronic viewfinder (3686k dots)
3.2" LCD – 1037k dots 3.0" LCD – 1440k dots
Swivel touchscreen Tilting touchscreen
5 shutter flaps per second 20 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
820 shots per battery charge650 shots per battery charge
124 x 97 x 70 mm, 470 g 127 x 96 x 63 mm, 673 g
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D5500 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.

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Body comparison

The side-by-side display below illustrates the physical size and weight of the Nikon D5500 and the Sony A9. The two cameras are presented according to their relative size. Three consecutive perspectives from the front, the top, and the back are available. All width, height and depth dimensions are rounded to the nearest millimeter.

The D5500 can be obtained in two different colors (black, red), while the A9 is only available in black.

Size Nikon D5500 vs Sony A9
Compare D5500 versus A9 top
Comparison D5500 or A9 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A9 is somewhat larger (1 percent) than the Nikon D5500. Moreover, the A9 is substantially heavier (43 percent) than the D5500. It is noteworthy in this context that the A9 is splash and dust-proof, while the D5500 does not feature any corresponding weather-sealing.

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 (D5500) 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.

Concerning battery life, the D5500 gets 820 shots out of its Nikon EN-EL14a battery, while the A9 can take 650 images on a single charge of its Sony NP-FZ100 power pack. The power pack in the A9 can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.

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Body Specifications
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D5500 124 mm 97 mm 70 mm 470 g 820 n Jan 2015 899ebay.com
2.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499ebay.com
3.
 
Canon M5 116 mm 89 mm 61 mm 427 g 295 n Sep 2016 979ebay.com
4.
 
Nikon D500 147 mm 115 mm 81 mm 860 g 1240 Y Jan 2016 1,999ebay.com
5.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 n Apr 2012 599ebay.com
6.
 
Nikon D3300 124 mm 98 mm 76 mm 430 g 700 n Jan 2014 499ebay.com
7.
 
Nikon D3400 124 mm 98 mm 76 mm 445 g 1200 n Aug 2016 499ebay.com
8.
 
Nikon D5100 128 mm 97 mm 79 mm 560 g 660 n Apr 2011 749ebay.com
9.
 
Nikon D5200 129 mm 98 mm 78 mm 555 g 500 n Nov 2012 749ebay.com
10.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799ebay.com
11.
 
Nikon D5600 124 mm 97 mm 70 mm 465 g 970 n Nov 2016 699ebay.com
12.
 
Samsung NX30 127 mm 96 mm 58 mm 375 g 360 n Jan 2014 999ebay.com
13.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999ebay.com
14.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 amazon.com
15.
 
Sony A7R IIIA 127 mm 96 mm 74 mm 650 g 650 Y Apr 2021 3,199 amazon.com
16.
 
Sony A7R V 131 mm 97 mm 82 mm 723 g 530 Y Oct 2022 3,899 amazon.com
17.
 
Sony A9 II 129 mm 96 mm 76 mm 678 g 690 Y Oct 2019 4,499 amazon.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D5500 was launched at a markedly lower price (by 80 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.

Sensor comparison

The size of the sensor inside a digital camera is one of the key determinants 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. 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 D5500 features an APS-C sensor and the Sony A9 a full frame sensor. The sensor area in the A9 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.

Nikon D5500 and Sony A9 sensor measures

Even though the A9 has a larger sensor, both cameras offer the same resolution of 24 megapixels. This implies that the A9 has a lower pixel density and larger individual pixels (with a pixel pitch of 5.94μm versus 3.91μm for the D5500), which gives it a potential advantage in terms of light gathering capacity. In addition, the A9 is much more recent (by 2 years and 3 months) than the D5500, and its sensor will have benefitted from technological advances during this time. Coming back to sensor resolution, it should be mentioned that the D5500 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The A9 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Nikon D5500 has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Sony Alpha A9 are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.

In terms of underlying technology, the D5500 is build around a CMOS sensor, while the A9 uses a Stacked BSI-CMOS imager. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

D5500 versus A9 MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service assesses and scores the color depth ("DXO Portrait"), dynamic range ("DXO Landscape"), and low-light sensitivity ("DXO Sports") of camera sensors, and also publishes an overall camera score. Of the two cameras under consideration, the A9 has a markedly higher DXO score than the D5500 (overall score 8 points higher), which will translate into better image quality. The advantage is based on 0.8 bits higher color depth, 0.7 EV of lower dynamic range, and 1.3 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.

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Sensor Characteristics
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Nikon D5500 APS-C 24.0 6000 40001080/60p24.114.0143884
2.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
3.
 
Canon M5 APS-C 24.0 6000 40001080/60p23.412.4126277
4.
 
Nikon D500 APS-C 20.7 5568 37124K/30p24.014.0132483
5.
 
Nikon D3200 APS-C 24.1 6016 40001080/30p24.113.2113181
6.
 
Nikon D3300 APS-C 24.0 6000 40001080/60p24.312.8138582
7.
 
Nikon D3400 APS-C 24.0 6000 40001080/60p24.813.9119286
8.
 
Nikon D5100 APS-C 16.1 4928 32641080/30p23.513.6118380
9.
 
Nikon D5200 APS-C 24.0 6000 40001080/60i24.213.9128484
10.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
11.
 
Nikon D5600 APS-C 24.0 6000 40001080/60p24.114.0130684
12.
 
Samsung NX30 APS-C 20.0 5472 36481080/60p23.512.4101476
13.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
14.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
15.
 
Sony A7R IIIA Full Frame 42.2 7952 53044K/30p26.014.73523100
16.
 
Sony A7R V Full Frame 60.2 9504 63368k/24p26.514.83187100
17.
 
Sony A9 II Full Frame 24.0 6000 40004K/30p25.014.0343493

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, but the A9 provides a better video resolution than the D5500. It can shoot movie footage at 4K/30p, while the Nikon is limited to 1080/60p.

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Feature comparison

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 D5500 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 viewfinder in the A9 offers a wider field of view (100%) than the one in the D5500 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A9 has a higher magnification (0.78x vs 0.57x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The following table reports on some other key feature differences and similarities of the Nikon D5500, the Sony A9, and comparable cameras.

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Core Features
  empty Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Specifications
(inch/000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Max
Shutter
Speed *
Max
Shutter
Flaps *
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Nikon D5500optical n3.2 / 1037 swivel Y 1/4000s 5.0/s Y n
2.
 
Sony A93686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
3.
 
Canon M52360 n3.2 / 1620 tilting Y 1/4000s 9.0/s Y n
4.
 
Nikon D500optical Y3.2 / 2359 tilting Y 1/8000s 10.0/s n n
5.
 
Nikon D3200optical n3.0 / 921 fixed n 1/4000s 4.0/s Y n
6.
 
Nikon D3300optical n3.0 / 921 fixed n 1/4000s 5.0/s Y n
7.
 
Nikon D3400optical n3.0 / 921 fixed n 1/4000s 5.0/s Y n
8.
 
Nikon D5100optical n3.0 / 921 swivel n 1/4000s 4.0/s Y n
9.
 
Nikon D5200optical n3.0 / 921 swivel n 1/4000s 5.0/s Y n
10.
 
Nikon D5300optical n3.2 / 1037 swivel n 1/4000s 5.0/s Y n
11.
 
Nikon D5600optical n3.2 / 1037 swivel Y 1/4000s 5.0/s Y n
12.
 
Samsung NX302359 n3.0 / 1036 swivel Y 1/8000s 9.0/s Y n
13.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0/s n Y
14.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0/s n Y
15.
 
Sony A7R IIIA3686 n3.0 / 2340 tilting Y 1/8000s 10.0/s n Y
16.
 
Sony A7R V9440 n3.2 / 2100 full-flex Y 1/8000s 10.0/s n Y
17.
 
Sony A9 II3686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One difference between the cameras concerns the presence of an on-board flash. The D5500 has one, while the A9 does not. While the built-in flash of the D5500 is not very powerful, it can at times be useful as a fill-in light.

The D5500 has an articulated LCD that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in snapping selfies. In contrast, the A9 does not have a selfie-screen.

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 D5500 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 D5500 writes its imaging data to SDXC cards, while the A9 uses SDXC or Memory Stick PRO Duo cards. The A9 features dual card slots, which can be very useful in case a memory card fails. In contrast, the D5500 only has one slot. The A9 supports UHS-II cards (on its first slot), while the D5500 can use UHS-I cards.

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Connectivity comparison

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 D5500 and Sony Alpha A9 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D5500Ystereo / monoY-mini2.0Y--
2.
 
Sony A9Ystereo / monoYYmicro2.0YYY
3.
 
Canon M5Ystereo / monoY-mini2.0YYY
4.
 
Nikon D500Ystereo / monoYYmini3.0YYY
5.
 
Nikon D3200Ymono / monoY-mini2.0---
6.
 
Nikon D3300Ymono / monoY-mini2.0---
7.
 
Nikon D3400Ymono / mono--mini2.0--Y
8.
 
Nikon D5100Ymono / monoY-mini2.0---
9.
 
Nikon D5200Ystereo / monoY-mini2.0---
10.
 
Nikon D5300Ystereo / monoY-mini2.0Y--
11.
 
Nikon D5600Ystereo / monoY-mini2.0YYY
12.
 
Samsung NX30Ystereo / mono--micro2.0YY-
13.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
14.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY
15.
 
Sony A7R IIIAYstereo / monoYYmicro3.2YYY
16.
 
Sony A7R VYstereo / monoYYfull3.2Y-Y
17.
 
Sony A9 IIYstereo / monoYYmicro3.1YYY

It is notable that the A9 has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The D5500 lacks such a headphone port.

Studio photographers will appreciate that the Sony A9 (unlike the D5500) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the D5500 and the A9 have been discontinued, but can regularly be found used on ebay. The D5500 was replaced by the Nikon D5600, while the A9 was followed by the Sony A9 II. Further information on the features and operation of the D5500 and A9 can be found, respectively, in the Nikon D5500 Manual (free pdf) or the online Sony A9 Manual.

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Review summary

So what is the bottom line? Is there a clear favorite between the Nikon D5500 and the Sony A9? Which camera is better? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Nikon D5500:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • More dynamic range: Captures a larger spectrum of light and dark details (0.7 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 flexible LCD: Has a swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Less heavy: Is lighter (by 203g or 30 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (820 versus 650) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • More affordable: Was introduced into a lower priced category (80 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in January 2015).

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Reasons to prefer the Sony Alpha A9:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Scores markedly higher (8 points) in the DXO overall evaluation.
  • Better low-light sensitivity: Can shoot in dim conditions (1.3 stops ISO advantage).
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/60p).
  • 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.
  • More complete view: Has a viewfinder with a larger field of view (100% vs 95%).
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.57x).
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 1037k dots).
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (20 vs 5 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • Faster buffer clearing: Supports a more advanced SD data transfer standard (UHS-II vs UHS-I).
  • More modern: Reflects 2 years and 3 months of technical progress since the D5500 launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A9 is the clear winner of the contest (23 : 12 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.

D5500 12:23 A9

How about other alternatives? Do the specifications of the Nikon D5500 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 comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the D5500 or the A9 perform in practice. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews

This is where reviews by experts come in. The table below provides a synthesis of the camera assessments of some of the best known photo-gear review sites (amateurphotographer [AP], cameralabs [CL], digitalcameraworld [DCW], 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.

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Expert Camera Reviews
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D55005/5+..79/1004.5/54.5/5 Jan 2015 899ebay.com
2.
 
Sony A95/5+ +4.8/589/1005/55/5 Apr 2017 4,499ebay.com
3.
 
Canon M54/5+4/582/1004/54/5 Sep 2016 979ebay.com
4.
 
Nikon D5005/5+ +4.7/591/1004.5/55/5 Jan 2016 1,999ebay.com
5.
 
Nikon D32005/5+ +..73/1004.5/54.5/5 Apr 2012 599ebay.com
6.
 
Nikon D33003/5+..77/1004.5/54.5/5 Jan 2014 499ebay.com
7.
 
Nikon D34004/5+4/576/1004/54.5/5 Aug 2016 499ebay.com
8.
 
Nikon D51005/5+ +..76/1004.5/54.5/5 Apr 2011 749ebay.com
9.
 
Nikon D52004/5+ +..79/1004.5/54.5/5 Nov 2012 749ebay.com
10.
 
Nikon D53004/5+ +..79/1004.5/54.5/5 Oct 2013 799ebay.com
11.
 
Nikon D56004/5..4/579/1004.5/54/5 Nov 2016 699ebay.com
12.
 
Samsung NX303/5....77/1004.5/54.5/5 Jan 2014 999ebay.com
13.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 1,999ebay.com
14.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 1,999 amazon.com
15.
 
Sony A7R IIIA..+ +4/590/1004.5/55/5 Apr 2021 3,199 amazon.com
16.
 
Sony A7R V5/5+ +4.5/592/100.... Oct 2022 3,899 amazon.com
17.
 
Sony A9 II....5/590/1005/55/5 Oct 2019 4,499 amazon.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The review scores listed above should be treated with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time 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.

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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 a corresponding selection in the search boxes below. There is also a set of direct links to comparison reviews that other users of the CAM-parator app explored.

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    Specifications: Nikon D5500 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 Specifications
    Camera Model Nikon D5500 Sony A9
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Sony E mount lenses
    Launch Date January 2015 April 2017
    Launch Price USD 899 USD 4,499
    Sensor Specs Nikon D5500 Sony A9
    Sensor Technology CMOS Stacked BSI-CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.5 x 15.6 mm 35.6 x 23.8 mm
    Sensor Area 366.6 mm2 847.28 mm2
    Sensor Diagonal 28.2 mm 42.8 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 24 Megapixels 24 Megapixels
    Image Resolution 6000 x 4000 pixels 6000 x 4000 pixels
    Pixel Pitch 3.91 μm 5.94 μm
    Pixel Density 6.55 MP/cm2 2.83 MP/cm2
    Moiré control no AA filter Anti-Alias filter
    Movie Capability 1080/60p Video 4K/30p Video
    ISO Setting 100 - 25,600 ISO 100 - 51,200 ISO
    ISO Boost no Enhancement 50 - 204,800 ISO
    Image Processor EXPEED 4 BIONZ X
    DXO Sensor Quality (score) 84 92
    DXO Color Depth (bits) 24.1 24.9
    DXO Dynamic Range (EV) 14.0 13.3
    DXO Low Light (ISO) 1438 3517
    Screen Specs Nikon D5500 Sony A9
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.57x 0.78x
    Viewfinder Resolution 3686k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.2inch 3.0inch
    LCD Resolution 1037k dots 1440k dots
    LCD Attachment Swivel screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Nikon D5500 Sony A9
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/8000s
    Continuous Shooting 5 shutter flaps/s 20 shutter flaps/s
    Shutter Life Expectancy100 000 actuations500 000 actuations
    Electronic Shutterno E-Shutterup to 1/32000s
    Time-Lapse PhotographyIntervalometer built-inno Intervalometer
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Dual card slots
    UHS card support UHS-I Single UHS-II
    Connectivity Specs Nikon D5500 Sony A9
    External Flash Hotshoe Hotshoe
    Studio Flash no PC Sync PC Sync socket
    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 Wifi built-in Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Nikon D5500 Sony A9
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type Nikon EN-EL14a Sony NP-FZ100
    Battery Life (CIPA)820 shots per charge650 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 124 x 97 x 70 mm
    (4.9 x 3.8 x 2.8 in)
    127 x 96 x 63 mm
    (5.0 x 3.8 x 2.5 in)
    Camera Weight 470 g (16.6 oz) 673 g (23.7 oz)
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