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Sony A9 versus Nikon D7500

The Sony Alpha A9 and the Nikon D7500 are two digital cameras that were announced 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 megapixel, whereas the Nikon provides 20.7 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Sony A9 vs Nikon D7500

An illustration of the physical size and weight of the Sony A9 and the Nikon D7500 is provided in the side-by-side display below. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the A9 – represents 100 percent across all the size and weight measures).

Snapsort Sony A9 vs Nikon D7500
Compare A9 versus D7500 top
Compare A9 and 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 find an overview of optics 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 NP-FZ100 battery, while the D7500 can take 950 images on a single charge of its EN-EL15a power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you want to switch the focus of the display and review another camera pair, just select a new right or left comparator from among the camera models in the table. Alternatively, you can also move across to the CAM-parator tool and choose from the broad selection of possible camera comparisons there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Sony A9» 5.0 in 3.8 in 2.5 in 23.7 oz 650 Y Apr 2017 4,499 i i
Nikon D7500« 5.4 in 4.1 in 2.9 in 25.4 oz 950 Y Apr 2017 1,299 i i
Canon 80D« » 5.5 in 4.1 in 3.1 in 25.8 oz 960 Y Feb 2016 1,199 i i
Nikon D3400« » 4.9 in 3.9 in 3.0 in 15.7 oz 1200 n Aug 2016 499 i i
Nikon D500« » 5.8 in 4.5 in 3.2 in 30.3 oz 1240 Y Jan 2016 1,999 i i
Nikon D7200« » 5.4 in 4.2 in 3.0 in 27.0 oz 1110 Y Mar 2015 1,199- i
Nikon D7100« » 5.4 in 4.2 in 3.0 in 27.0 oz 950 Y Feb 2013 1,199- i
Olympus E-M1 II« » 5.3 in 3.6 in 2.6 in 20.2 oz 440 Y Sep 2016 1,999 i i
Panasonic GH5« » 5.5 in 3.9 in 3.4 in 25.6 oz 410 Y Jan 2017 1,999 i i
Sony A7 III« » 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i
Sony A7R III« » 5.0 in 3.8 in 2.9 in 22.9 oz 650 Y Oct 2017 3,199 i i
Sony A6500« » 4.7 in 2.6 in 2.1 in 16.0 oz 350 Y Oct 2016 1,399 i i
Sony A7R II« » 5.0 in 3.8 in 2.4 in 22.0 oz 290 Y Jun 2015 3,199- i
Sony A7S II« » 5.0 in 3.8 in 2.4 in 22.1 oz 370 Y Sep 2015 2,999 i i
Sony A7 II« » 5.0 in 3.8 in 2.4 in 21.1 oz 350 Y Nov 2014 1,999- i
Sony A99« » 5.8 in 4.4 in 3.1 in 28.6 oz 500 Y Sep 2012 2,799- i
Sony A77« » 5.6 in 4.1 in 3.2 in 25.8 oz 470 Y Aug 2011 1,999- i

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 D7500 was launched at a markedly lower price (by 71 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: Sony A9 vs Nikon D7500

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 generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and 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.

A9 versus D7500 MP

Consistent information on actual sensor performance is available from DXO Mark for most 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 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.

Sensor Characteristics
  Camera Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Sony A9» Full Frame 24.0 6000 40004K/30p24.913.3351792
Nikon D7500« APS-C 20.7 5568 37124K/30p24.314.0148386
Canon 80D« » APS-C 24.0 6000 40001080/60p23.613.2113579
Nikon D3400« » APS-C 24.0 6000 40001080/60p24.813.9119286
Nikon D500« » APS-C 20.7 5568 37124K/30p24.014.0132483
Nikon D7200« » APS-C 24.0 6000 40001080/60p24.514.6133387
Nikon D7100« » APS-C 24.0 6000 40001080/60p24.213.7125683
Olympus E-M1 II« » Four Thirds 20.2 5184 38884K/30p23.712.8131280
Panasonic GH5« » Four Thirds 20.2 5184 38884K/60p23.913.080777
Sony A7 III« » Full Frame 24.0 6000 40004K/30p25.014.7373096
Sony A7R III« » Full Frame 42.2 7952 53044K/30p26.014.73523100
Sony A6500« » APS-C 24.0 6000 40004K/30p24.513.7140585
Sony A7R II« » Full Frame 42.2 7952 53044K/30p26.013.9343498
Sony A7S II« » Full Frame 12.0 4240 28324K/30p23.613.3299385
Sony A7 II« » Full Frame 24.0 6000 40001080/60p24.913.6244990
Sony A99« » Full Frame 24.0 6000 40001080/60p25.014.0155589
Sony A77« » APS-C 24.0 6000 40001080/60p24.013.280178

Many modern cameras are not only capable of taking still images, but can also record movies. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, and both provide the same movie specifications (4K/30p).

 

Feature comparison: Sony A9 vs Nikon D7500

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 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 following table reports on some other key feature differences and similarities of the Sony A9, the Nikon D7500, and comparable cameras. The full specs-sheets can be found in the camera manual or, for example, in the dpreview camera hub.

Core Features
  Camera Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec))
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Sony A9»3686 n 3.0 1440 tilting Y 8000 20.0 n Y
Nikon D7500«optical Y 3.2 922 tilting Y 8000 8.0 Y n
Canon 80D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n
Nikon D3400« »optical n 3.0 921 fixed n 4000 5.0 Y n
Nikon D500« »optical Y 3.2 2359 tilting Y 8000 10.0 n n
Nikon D7200« »optical Y 3.2 1229 fixed n 8000 6.0 Y n
Nikon D7100« »optical Y 3.2 1229 fixed n 8000 6.0 Y n
Olympus E-M1 II« »2360 n 3.0 1037 swivel Y 8000 18.0 n Y
Panasonic GH5« »3680 n 3.2 1620 swivel Y 8000 12.0 n Y
Sony A7 III« »2359 n 3.0 922 tilting Y 8000 10.0 n Y
Sony A7R III« »3686 n 3.0 1440 tilting Y 8000 10.0 n Y
Sony A6500« »2300 n 3.0 922 tilting Y 4000 11.0 Y Y
Sony A7R II« »2400 n 3.0 1229 tilting n 8000 5.0 n Y
Sony A7S II« »2400 n 3.0 1229 tilting n 8000 5.0 n Y
Sony A7 II« »2400 n 3.0 1230 tilting n 8000 5.0 n Y
Sony A99« »2359 Y 3.0 1229 full-flex n 8000 6.0 n Y
Sony A77« »2359 Y 3.0 921 full-flex n 8000 12.0 Y Y

Both the A9 and the D7500 are current models that good online retailers will have in stock. You can check the latest prices, for example, at amazon. The D7500 replaced the earlier Nikon D7200, while the A9 does not have a direct predecessor.

Review summary: Sony A9 vs Nikon D7500

So how do things add up? Is the Sony A9 better than the Nikon D7500 or vice versa? A synthesis of the relative strong points of each of the models is listed below.

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Reasons to prefer the Sony Alpha A9:

  • More detail: Offers more megapixels (24 vs 20.7MP) with a 8% higher linear resolution.
  • 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).
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • 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.
  • More compact: Is smaller (127x96mm vs 136x104mm) and thus needs less room in the bag.
  • More legacy lens friendly: Can take a broad range of non-native lenses via adapters.
  • Sharper images: Has hand-shake reducing image stabilization build-in.

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Arguments in favor of the Nikon D7500:

  • 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: Has 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.
  • 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 number of relative strengths (bullet points above) is taken as a guide, the A9 emerges as the winner of the contest (9 : 7 points). However, the pertinence of the various camera strengths will differ across photographers, so that you might want to weigh individual camera traits according to their importance for your own imaging needs before making a camera decision.

A9 09:07 D7500

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the A9 and the D7500 in practical situations. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate. This is why hands-on reviews by experts are important. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). The detailed reviews can be accessed by clicking on the site logo in the table header.

Review scores
  Camera cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Sony A9»HiRec89/1005/55/55/5 Apr 2017 4,499 i i
Nikon D7500«HiRec86/1005/54.5/54.5/5 Apr 2017 1,299 i i
Canon 80D« »HiRec84/1004.5/54.5/54.5/5 Feb 2016 1,199 i i
Nikon D3400« »Rec76/1004/54.5/54.5/5 Aug 2016 499 i i
Nikon D500« »HiRec91/1004.5/55/55/5 Jan 2016 1,999 i i
Nikon D7200« »HiRec84/1004.5/54/54.5/5 Mar 2015 1,199- i
Nikon D7100« »HiRec85/1004.5/55/54.5/5 Feb 2013 1,199- i
Olympus E-M1 II« »HiRec85/1004.5/55/54.5/5 Sep 2016 1,999 i i
Panasonic GH5« »HiRec85/1004.5/55/55/5 Jan 2017 1,999 i i
Sony A7 III« »HiRec89/1005/5-5/5 Feb 2018 1,999 i i
Sony A7R III« »HiRec90/1004.5/55/55/5 Oct 2017 3,199 i i
Sony A6500« »HiRec85/1004.5/55/54.5/5 Oct 2016 1,399 i i
Sony A7R II« »HiRec90/1005/54.5/55/5 Jun 2015 3,199- i
Sony A7S II« »Rec-4.5/55/55/5 Sep 2015 2,999 i i
Sony A7 II« »Rec82/1004.5/55/55/5 Nov 2014 1,999- i
Sony A99« »-84/1004.5/5rev4.5/5 Sep 2012 2,799- i
Sony A77« »91/10081/100-4.5/55/5 Aug 2011 1,999- i

The above review scores should be interpreted with care, though. The ratings are only valid when refering to cameras in the same category and of the same age. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date 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? 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. If you cannot find the camera you are interested in, please send me an email, and I will try to add information on that model to the database.

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