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Sony A9 vs Nikon D7500

The Sony Alpha A9 and the Nikon D7500 are two digital cameras that were revealed to the public in April 2017. The A9 is a mirrorless interchangeable lens camera, while the D7500 is a DSLR. The cameras are based on a full frame (A9) and an APS-C (D7500) sensor. The Sony has a resolution of 24 megapixels, whereas the Nikon provides 20.7 MP.

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

Headline Specifications
Sony A9
versus
Nikon D7500
Sony A9   Nikon D7500
Mirrorless system camera Digital single lens reflex
Sony E mount lenses Nikon F mount lenses
24 MP – Full Frame sensor 20.7 MP – APS-C sensor
4K/30p Video 4K/30p Video
ISO 100-51,200 (50 - 204,800) ISO 100-51,200 (50 - 164,000)
Electronic viewfinder (3686k dots) Optical viewfinder
3.0" LCD – 1440k dots 3.2" LCD – 922k dots
Tilting touchscreen Tilting touchscreen
20 shutter flaps per second 8 shutter flaps per second
In-body stabilizationLens stabilization only
Weathersealed bodyWeathersealed body
650 shots per battery charge950 shots per battery charge
127 x 96 x 63 mm, 673 g 136 x 104 x 73 mm, 720 g
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Check A9 offers at
ebay.com
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Check D7500 price at
amazon.com

Going beyond this snapshot of core features and characteristics, what are the differences between the Sony Alpha A9 and the Nikon D7500? 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 physical size and weight of the Sony A9 and the Nikon D7500 are illustrated in the side-by-side display below. 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.

Size Sony A9 vs Nikon D7500
Compare A9 versus D7500 top
Comparison A9 or D7500 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D7500 is notably larger (16 percent) than the Sony A9. Moreover, the D7500 is markedly heavier (7 percent) than the A9. 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. 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 Sony FE Lens Catalog (A9) and the Nikon Lens Catalog (D7500). Mirrorless cameras, such as the Sony A9, 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.

Concerning battery life, the A9 gets 650 shots out of its Sony NP-FZ100 battery, while the D7500 can take 950 images on a single charge of its Nikon EN-EL15a power pack. The power pack in the A9 can be charged via the USB port, so that it is not always necessary to take the battery charger along when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. If you want to switch the focus of the display and review another camera pair, you can move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

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Body Specifications
# image Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Sony A9 127 mm 96 mm 63 mm 673 g 650 Y Apr 2017 4,499ebay.com
2.
 
Nikon D7500 136 mm 104 mm 73 mm 720 g 950 Y Apr 2017 1,299 amazon.com
3.
 
Canon 80D 139 mm 105 mm 79 mm 730 g 960 Y Feb 2016 1,199ebay.com
4.
 
Nikon Z6 134 mm 101 mm 67 mm 675 g 310 Y Aug 2018 1,999ebay.com
5.
 
Nikon D500 147 mm 115 mm 81 mm 860 g 1240 Y Jan 2016 1,999ebay.com
6.
 
Nikon D7200 136 mm 107 mm 76 mm 765 g 1110 Y Mar 2015 1,199ebay.com
7.
 
Nikon D7100 136 mm 107 mm 76 mm 765 g 950 Y Feb 2013 1,199ebay.com
8.
 
Nikon D7000 132 mm 105 mm 77 mm 780 g 1050 Y Sep 2010 1,499ebay.com
9.
 
Sony A7R V 131 mm 97 mm 82 mm 723 g 530 Y Oct 2022 3,899 amazon.com
10.
 
Sony A7R IIIA 127 mm 96 mm 74 mm 650 g 650 Y Apr 2021 3,199 amazon.com
11.
 
Sony A9 II 129 mm 96 mm 76 mm 678 g 690 Y Oct 2019 4,499 amazon.com
12.
 
Sony A7 III 127 mm 96 mm 74 mm 650 g 610 Y Feb 2018 1,999 amazon.com
13.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199ebay.com
14.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199ebay.com
15.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999ebay.com
16.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999ebay.com
17.
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 Y Sep 2012 2,799ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
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Any camera decision will obviously take relative prices into account. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D7500 was launched at a markedly lower price (by 71 percent) than the A9, which puts it into a different market segment. 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

Sensor comparison

The imaging sensor is at the core of digital cameras and its size is one of the main determining factors of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units 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 are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Sony A9 features a full frame sensor and the Nikon D7500 an APS-C sensor. The sensor area in the D7500 is 56 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Sony A9 and Nikon D7500 sensor measures

With 24MP, the A9 offers a higher resolution than the D7500 (20.7MP), but the A9 nevertheless has larger individual pixels (pixel pitch of 5.94μm versus 4.22μm for the D7500) due to its larger sensor. It is noteworthy in this context that the two cameras were released in close succession, so that their sensors are from the same technological generation. Coming back to sensor resolution, it should be mentioned that the D7500 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The resolution advantage of the Sony A9 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A9 for good quality output (200 dots per inch) amounts to 30 x 20 inches or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inches or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inches or 50.8 x 33.9 cm. The corresponding values for the Nikon D7500 are 27.8 x 18.6 inches or 70.7 x 47.1 cm for good quality, 22.3 x 14.8 inches or 56.6 x 37.7 cm for very good quality, and 18.6 x 12.4 inches or 47.1 x 31.4 cm for excellent quality prints.

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

The Sony Alpha A9 has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The corresponding ISO settings for the Nikon D7500 are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-164000.

In terms of underlying technology, the A9 is build around a Stacked BSI-CMOS sensor, while the D7500 uses a 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.

A9 versus D7500 MP

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"). Of the two cameras under review, the A9 has a notably higher overall DXO score than the D7500 (overall score 6 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.6 bits higher color depth, 0.7 EV of lower dynamic range, and 1.2 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
# image Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Sony A9 Full Frame 24.0 6000 40004K/30p24.913.3351792
2.
 
Nikon D7500 APS-C 20.7 5568 37124K/30p24.314.0148386
3.
 
Canon 80D APS-C 24.0 6000 40001080/60p23.613.2113579
4.
 
Nikon Z6 Full Frame 24.3 6048 40244K/30p25.314.3329995
5.
 
Nikon D500 APS-C 20.7 5568 37124K/30p24.014.0132483
6.
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.6133387
7.
 
Nikon D7100 APS-C 24.0 6000 40001080/60p24.213.7125683
8.
 
Nikon D7000 APS-C 16.1 4928 32641080/24p23.513.9116780
9.
 
Sony A7R V Full Frame 60.2 9504 63368k/24p26.514.83187100
10.
 
Sony A7R IIIA Full Frame 42.2 7952 53044K/30p26.014.73523100
11.
 
Sony A9 II Full Frame 24.0 6000 40004K/30p25.014.0343493
12.
 
Sony A7 III Full Frame 24.0 6000 40004K/30p25.014.7373096
13.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523100
14.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.9343498
15.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.3299385
16.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.6244990
17.
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589
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Many modern cameras are not only capable of taking still images, but can also record movies. 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).

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Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A9 has an electronic viewfinder (3686k dots), while the D7500 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 D7500 (0.78x vs 0.61x), so that the size of the image transmitted appears closer to the size seen with the naked human eye. The adjacent table lists some of the other core features of the Sony A9 and Nikon D7500 along with similar information for a selection of comparators.

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Core Features
# image 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.
 
Sony A93686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
2.
 
Nikon D7500optical Y3.2 / 922 tilting Y 1/8000s 8.0/s Y n
3.
 
Canon 80Doptical Y3.0 / 1040 swivel Y 1/8000s 7.0/s Y n
4.
 
Nikon Z63690 Y3.2 / 2100 tilting Y 1/8000s 12.0/s n Y
5.
 
Nikon D500optical Y3.2 / 2359 tilting Y 1/8000s 10.0/s n n
6.
 
Nikon D7200optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
7.
 
Nikon D7100optical Y3.2 / 1229 fixed n 1/8000s 6.0/s Y n
8.
 
Nikon D7000optical Y3.0 / 921 fixed n 1/8000s 6.0/s Y n
9.
 
Sony A7R V9440 n3.2 / 2100 full-flex Y 1/8000s 10.0/s n Y
10.
 
Sony A7R IIIA3686 n3.0 / 2340 tilting Y 1/8000s 10.0/s n Y
11.
 
Sony A9 II3686 n3.0 / 1440 tilting Y 1/8000s 20.0/s n Y
12.
 
Sony A7 III2359 n3.0 / 922 tilting Y 1/8000s 10.0/s n Y
13.
 
Sony A7R III3686 n3.0 / 1440 tilting Y 1/8000s 10.0/s n Y
14.
 
Sony A7R II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
15.
 
Sony A7S II2400 n3.0 / 1229 tilting n 1/8000s 5.0/s n Y
16.
 
Sony A7 II2400 n3.0 / 1230 tilting n 1/8000s 5.0/s n Y
17.
 
Sony A992359 Y3.0 / 1229 full-flex n 1/8000s 6.0/s n Y
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
padding

One feature that differentiates the A9 and the D7500 is in-body image stabilization (IBIS). The A9 reduces the risk of handshake-induced blur with all attached lenses, while the D7500 offers no blur reduction with lenses that themselves do not provide optical image stabilization.

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 D7500 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 A9 writes its imaging data to SDXC or Memory Stick PRO Duo cards, while the D7500 uses SDXC cards. The A9 features dual card slots, which can be very useful in case a memory card fails. In contrast, the D7500 only has one slot. The A9 supports UHS-II cards (on its first slot), while the D7500 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 Sony Alpha A9 and Nikon D7500 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
# image Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Sony A9Ystereo / monoYYmicro2.0YYY
2.
 
Nikon D7500Ystereo / monoYYmini2.0Y-Y
3.
 
Canon 80DYstereo / monoYYmini2.0YY-
4.
 
Nikon Z6Ystereo / monoYYmicro3.1Y-Y
5.
 
Nikon D500Ystereo / monoYYmini3.0YYY
6.
 
Nikon D7200Ystereo / monoYYmini2.0YY-
7.
 
Nikon D7100Ystereo / monoYYmini2.0---
8.
 
Nikon D7000Ymono / monoY-mini2.0---
9.
 
Sony A7R VYstereo / monoYYfull3.2Y-Y
10.
 
Sony A7R IIIAYstereo / monoYYmicro3.2YYY
11.
 
Sony A9 IIYstereo / monoYYmicro3.1YYY
12.
 
Sony A7 IIIYstereo / monoYYmicro3.1YYY
13.
 
Sony A7R IIIYstereo / monoYYmicro3.1YYY
14.
 
Sony A7R IIYstereo / monoYYmicro2.0YY-
15.
 
Sony A7S IIYstereo / monoYYmicro2.0YY-
16.
 
Sony A7 IIYstereo / monoYYmicro2.0YY-
17.
 
Sony A99Ystereo / monoYYmini2.0---
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Studio photographers will appreciate that the Sony A9 (unlike the D7500) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

The D7500 is a recent model that features in the current product line-up of Nikon. In contrast, the A9 has been discontinued (but 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 features and operation of the A9 and D7500 can be found, respectively, in the Sony A9 Manual (free pdf) or the online Nikon D7500 Manual.

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Review summary

So how do things add up? Is there a clear favorite between the Sony A9 and the Nikon D7500? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.

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Arguments in favor of the Sony Alpha A9:

  • More detail: Offers more megapixels (24 vs 20.7MP) with a 8% higher linear resolution.
  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better image quality: Scores markedly higher (6 points) in the DXO overall assessment.
  • Better low-light sensitivity: Requires less light for good images (1.2 stops ISO advantage).
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • Larger viewfinder image: Features a viewfinder with a higher magnification (0.78x vs 0.61x).
  • More detailed LCD: Has a higher resolution rear screen (1440k vs 922k dots).
  • Faster burst: Shoots at higher frequency (20 vs 8 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (127x96mm vs 136x104mm) and thus needs less room in the bag.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Sharper images: Has hand-shake reducing image stabilization built-in.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • 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).

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Advantages of the Nikon D7500:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • More dynamic range: Captures a broader range of light and dark details (0.7 EV of extra DR).
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features 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.
  • Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
  • Longer lasting: Gets more shots (950 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 (71 percent cheaper at launch).

If the count of individual advantages (bullet points above) is taken as a guide, the A9 is the clear winner of the match-up (18 : 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.

A9 18:09 D7500

How about other alternatives? Do the specifications of the Sony A9 and the Nikon D7500 place the cameras among the top in their class? Find out in the latest Best Mirrorless Interchangeable Lens Camera and Best DSLR 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 incomplete and does no justice, for example, to the way the A9 or the D7500 perform in practice. 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.

Expert reviews

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 (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
# image  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Sony A95/5+ +4.8/589/1005/55/5 Apr 2017 4,499ebay.com
2.
 
Nikon D75004.5/5+ +4.5/586/1005/54.5/5 Apr 2017 1,299 amazon.com
3.
 
Canon 80D4/5+ +4.5/584/1004.5/54.5/5 Feb 2016 1,199ebay.com
4.
 
Nikon Z65/5..5/589/1004.5/55/5 Aug 2018 1,999ebay.com
5.
 
Nikon D5005/5+ +4.7/591/1004.5/55/5 Jan 2016 1,999ebay.com
6.
 
Nikon D72004/5+ +..84/1004.5/54.5/5 Mar 2015 1,199ebay.com
7.
 
Nikon D71005/5+ +..85/1004.5/54.5/5 Feb 2013 1,199ebay.com
8.
 
Nikon D70004/5....80/1004.5/54.5/5 Sep 2010 1,499ebay.com
9.
 
Sony A7R V5/5+ +4.5/592/100.... Oct 2022 3,899 amazon.com
10.
 
Sony A7R IIIA..+ +4/590/1004.5/55/5 Apr 2021 3,199 amazon.com
11.
 
Sony A9 II....5/590/1005/55/5 Oct 2019 4,499 amazon.com
12.
 
Sony A7 III..+ +4.5/589/1005/55/5 Feb 2018 1,999 amazon.com
13.
 
Sony A7R III..+ +4/590/1004.5/55/5 Oct 2017 3,199ebay.com
14.
 
Sony A7R II5/5+ +5/590/1005/55/5 Jun 2015 3,199ebay.com
15.
 
Sony A7S II5/5+....4.5/55/5 Sep 2015 2,999ebay.com
16.
 
Sony A7 II5/5+4/582/1004.5/55/5 Nov 2014 1,999ebay.com
17.
 
Sony A995/5....84/1004.5/54.5/5 Sep 2012 2,799ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
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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. A score, therefore, has to be seen in close connection to the price and market introduction time 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.

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Check A9 offers at
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Check D7500 price at
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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.

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    Specifications: Sony A9 vs Nikon D7500

    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 Sony A9 Nikon D7500
    Camera Type Mirrorless system camera Digital single lens reflex
    Camera Lens Sony E mount lenses Nikon F mount lenses
    Launch Date April 2017 April 2017
    Launch Price USD 4,499 USD 1,299
    Sensor Specs Sony A9 Nikon D7500
    Sensor Technology Stacked BSI-CMOS CMOS
    Sensor Format Full Frame Sensor APS-C Sensor
    Sensor Size 35.6 x 23.8 mm 23.5 x 15.7 mm
    Sensor Area 847.28 mm2 368.95 mm2
    Sensor Diagonal 42.8 mm 28.3 mm
    Crop Factor 1.0x 1.5x
    Sensor Resolution 24 Megapixels 20.7 Megapixels
    Image Resolution 6000 x 4000 pixels 5568 x 3712 pixels
    Pixel Pitch 5.94 μm 4.22 μm
    Pixel Density 2.83 MP/cm2 5.60 MP/cm2
    Moiré control Anti-Alias filter no AA filter
    Movie Capability 4K/30p Video 4K/30p Video
    ISO Setting 100 - 51,200 ISO 100 - 51,200 ISO
    ISO Boost 50 - 204,800 ISO 50 - 164,000 ISO
    Image Processor BIONZ X EXPEED 5
    DXO Sensor Quality (score) 92 86
    DXO Color Depth (bits) 24.9 24.3
    DXO Dynamic Range (EV) 13.3 14.0
    DXO Low Light (ISO) 3517 1483
    Screen Specs Sony A9 Nikon D7500
    Viewfinder Type Electronic viewfinder Optical viewfinder
    Viewfinder Field of View 100% 100%
    Viewfinder Magnification 0.78x 0.61x
    Viewfinder Resolution 3686k dots
    Top-Level Screen no Top Display Control Panel
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.2inch
    LCD Resolution 1440k dots 922k dots
    LCD Attachment Tilting screen Tilting screen
    Touch Input Touchscreen Touchscreen
    Shooting Specs Sony A9 Nikon D7500
    Focus System On-Sensor Phase-detect Phase-detect AF
    Manual Focusing AidFocus Peakingno Peaking Feature
    Continuous Shooting 20 shutter flaps/s 8 shutter flaps/s
    Shutter Life Expectancy500 000 actuations150 000 actuations
    Electronic Shutterup to 1/32000sno E-Shutter
    Time-Lapse Photographyno IntervalometerIntervalometer built-in
    Image StabilizationIn-body stabilizationLens stabilization only
    Fill Flash no On-Board Flash Built-in Flash
    Storage Medium MS or SDXC cards SDXC cards
    Single or Dual Card Slots Dual card slots Single card slot
    UHS card support Single UHS-II UHS-I
    Connectivity Specs Sony A9 Nikon D7500
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port micro HDMI mini 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 NFC built-in no NFC
    Bluetooth Support Bluetooth built-in Bluetooth built-in
    Body Specs Sony A9 Nikon D7500
    Environmental SealingWeathersealed bodyWeathersealed body
    Battery Type Sony NP-FZ100 Nikon EN-EL15a
    Battery Life (CIPA)650 shots per charge950 shots per charge
    In-Camera Charging USB charging no USB charging
    Body Dimensions 127 x 96 x 63 mm
    (5.0 x 3.8 x 2.5 in)
    136 x 104 x 73 mm
    (5.4 x 4.1 x 2.9 in)
    Camera Weight 673 g (23.7 oz) 720 g (25.4 oz)
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