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Nikon D3400 vs Sony A99

The Nikon D3400 and the Sony Alpha SLT-A99 are two digital cameras that were announced, respectively, in August 2016 and September 2012. Both are DSLR (Digital Single Lens Reflex) cameras that are based on an APS-C (D3400) and a full frame (A99) 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 D3400
versus
Sony A99
Nikon D3400   Sony A99
Digital single lens reflex Digital single lens reflex
Nikon F mount lenses Sony A mount lenses
24 MP – APS-C sensor 24 MP – Full Frame sensor
1080/60p Video 1080/60p Video
ISO 100-25,600 ISO 100-25,600
Optical viewfinder Electronic viewfinder (2359k dots)
3.0" LCD – 921k dots 3.0" LCD – 1229k dots
Fixed screen (not touch-sensitive) Fully flexible screen (no touchscreen)
5 shutter flaps per second 6 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
1200 shots per battery charge500 shots per battery charge
124 x 98 x 76 mm, 445 g 147 x 111 x 78 mm, 812 g
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Check D3400 offers at
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Check A99 offers at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D3400 and the Sony Alpha SLT-A99? 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 D3400 and the Sony A99. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

The D3400 can be obtained in two different colors (black, red), while the A99 is only available in black.

Size Nikon D3400 vs Sony A99
Compare D3400 versus A99 top
Comparison D3400 or A99 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A99 is notably larger (34 percent) than the Nikon D3400. Moreover, the A99 is substantially heavier (82 percent) than the D3400. It is noteworthy in this context that the A99 is splash and dust-proof, while the D3400 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. Hence, you might want to study and compare the specifications of available lenses in order to get the full picture of the size and weight of the two camera systems.

Concerning battery life, the D3400 gets 1200 shots out of its Nikon EN-EL14a battery, while the A99 can take 500 images on a single charge of its Sony NP-FM500H power pack.

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. If you would like to visualize and compare a different camera combination, you can navigate to the CAM-parator app and make your selection from a broad list of cameras there.

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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
Street
Price
1.
 
Nikon D3400 124 mm 98 mm 76 mm 445 g 1200 i Aug 2016 US$ 499ebay.com
2.
 
Sony A99 147 mm 111 mm 78 mm 812 g 500 i Sep 2012 US$ 2 799ebay.com
3.
 
Canon SL2 122 mm 93 mm 70 mm 453 g 650 i Jun 2017 US$ 549ebay.com
4.
 
Nikon D500 147 mm 115 mm 81 mm 860 g 1240 i Jan 2016 US$ 1 999ebay.com
5.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 i Apr 2012 US$ 599ebay.com
6.
 
Nikon D3300 124 mm 98 mm 76 mm 430 g 700 i Jan 2014 US$ 499ebay.com
7.
 
Nikon D3500 124 mm 97 mm 70 mm 415 g 1550 i Aug 2018 US$ 429ebay.com
8.
 
Nikon D5200 129 mm 98 mm 78 mm 555 g 500 i Nov 2012 US$ 749ebay.com
9.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 i Oct 2013 US$ 799ebay.com
10.
 
Nikon D5500 124 mm 97 mm 70 mm 470 g 820 i Jan 2015 US$ 899ebay.com
11.
 
Nikon D5600 124 mm 97 mm 70 mm 465 g 970 i Nov 2016 US$ 699ebay.com
12.
 
Nikon D7200 136 mm 107 mm 76 mm 765 g 1110 i Mar 2015 US$ 1 199ebay.com
13.
 
Sony A9 II 129 mm 96 mm 76 mm 678 g 690 i Oct 2019 US$ 4 499 amazon.com
14.
 
Sony A77 143 mm 104 mm 81 mm 732 g 470 i Aug 2011 US$ 1 399ebay.com
15.
 
Sony A99 II 143 mm 104 mm 76 mm 849 g 490 i Sep 2016 US$ 3 199ebay.com
16.
 
Sony A850 156 mm 117 mm 82 mm 895 g 880 i Aug 2009 US$ 1 999ebay.com
17.
 
Sony A900 156 mm 117 mm 82 mm 895 g 880 i Sep 2008 US$ 2 999ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.
  empty Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price
Street
Price
  empty Camera
Model

Any camera decision will naturally be influenced heavily by the price. 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 D3400 was launched at a markedly lower price (by 82 percent) than the A99, 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.

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. 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 associated with larger, more expensive camera bodies and lenses.

Of the two cameras under consideration, the Nikon D3400 features an APS-C sensor and the Sony A99 a full frame sensor. The sensor area in the A99 is 132 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 D3400 and Sony A99 sensor measures

Even though the A99 has a larger sensor, both cameras offer the same resolution of 24 megapixels. This implies that the A99 has a lower pixel density and larger individual pixels (with a pixel pitch of 5.96μm versus 3.91μm for the D3400), which gives it a potential advantage in terms of light gathering capacity. It should, however, be noted that the D3400 is much more recent (by 3 years and 11 months) than the A99, and its sensor will have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size. Coming back to sensor resolution, it should be mentioned that the D3400 has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The Nikon D3400 has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Sony Alpha SLT-A99 are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-25600.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors. Both cameras use a Bayer filter for capturing RGB colors on a square grid of photosensors. This arrangement is found in most digital cameras.

D3400 versus A99 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar imaging performance. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-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 D3400 APS-C 24.0 6000 40001080/60p24.813.9119286
2.
 
Sony A99 Full Frame 24.0 6000 40001080/60p25.014.0155589
3.
 
Canon SL2 APS-C 24.0 6000 40001080/60p23.613.4104179
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 D3500 APS-C 24.0 6000 40001080/60p24.013.4185183
8.
 
Nikon D5200 APS-C 24.0 6000 40001080/60i24.213.9128484
9.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
10.
 
Nikon D5500 APS-C 24.0 6000 40001080/60p24.114.0143884
11.
 
Nikon D5600 APS-C 24.0 6000 40001080/60p24.114.0130684
12.
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.6133387
13.
 
Sony A9 II Full Frame 24.0 6000 40004K/30p25.014.0343493
14.
 
Sony A77 APS-C 24.0 6000 40001080/60p24.013.280178
15.
 
Sony A99 II Full Frame 42.2 7952 53044K/30p25.413.4231792
16.
 
Sony A850 Full Frame 24.4 6048 4032i23.812.2141579
17.
 
Sony A900 Full Frame 24.4 6048 4032i23.712.3143179
Note: DXO values in italics represent estimates based on sensor size and age.
  empty Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
  empty Camera
Model

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 (1080/60p).

Feature comparison

Apart from body and sensor, cameras can and do differ across a range of features. For example, the A99 has an electronic viewfinder (2359k dots), while the D3400 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 A99 offers a wider field of view (100%) than the one in the D3400 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A99 has a higher magnification (0.71x 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 D3400, the Sony A99, 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 D3400optical i3.0 / 921 fixed i 1/4000s 5.0/s i i
2.
 
Sony A992359 i3.0 / 1229 full-flex i 1/8000s 6.0/s i i
3.
 
Canon SL2optical i3.0 / 1040 swivel i 1/4000s 5.0/s i i
4.
 
Nikon D500optical i3.2 / 2359 tilting i 1/8000s 10.0/s i i
5.
 
Nikon D3200optical i3.0 / 921 fixed i 1/4000s 4.0/s i i
6.
 
Nikon D3300optical i3.0 / 921 fixed i 1/4000s 5.0/s i i
7.
 
Nikon D3500optical i3.0 / 921 fixed i 1/4000s 5.0/s i i
8.
 
Nikon D5200optical i3.0 / 921 swivel i 1/4000s 5.0/s i i
9.
 
Nikon D5300optical i3.2 / 1037 swivel i 1/4000s 5.0/s i i
10.
 
Nikon D5500optical i3.2 / 1037 swivel i 1/4000s 5.0/s i i
11.
 
Nikon D5600optical i3.2 / 1037 swivel i 1/4000s 5.0/s i i
12.
 
Nikon D7200optical i3.2 / 1229 fixed i 1/8000s 6.0/s i i
13.
 
Sony A9 II3686 i3.0 / 1440 tilting i 1/8000s 20.0/s i i
14.
 
Sony A772359 i3.0 / 921 full-flex i 1/8000s 12.0/s i i
15.
 
Sony A99 II2400 i3.0 / 1229 full-flex i 1/8000s 12.0/s i i
16.
 
Sony A850optical i3.0 / 922 fixed i 1/8000s 3.0/s i i
17.
 
Sony A900optical i3.0 / 922 fixed i 1/8000s 5.0/s i i
Note: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.
  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
  empty Camera
Model

One difference between the cameras concerns the presence of an on-board flash. The D3400 has one, while the A99 does not. While the built-in flash of the D3400 is not very powerful, it can at times be useful as a fill-in light.

The A99 has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the D3400 does not have a selfie-screen.

The D3400 writes its imaging data to SDXC cards, while the A99 uses SDXC or Memory Stick PRO Duo cards. The A99 features dual card slots, which can be very useful in case a memory card fails. In contrast, the D3400 only has one slot. Both cameras can use UHS-I cards, which provide for Ultra High Speed data transfer of up to 104 MB/s.

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 D3400 and Sony Alpha SLT-A99 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 D3400imono / monoiimini2.0iii
2.
 
Sony A99istereo / monoiimini2.0iii
3.
 
Canon SL2istereo / monoiimini2.0iii
4.
 
Nikon D500istereo / monoiimini3.0iii
5.
 
Nikon D3200imono / monoiimini2.0iii
6.
 
Nikon D3300imono / monoiimini2.0iii
7.
 
Nikon D3500imono / monoiimini2.0iii
8.
 
Nikon D5200istereo / monoiimini2.0iii
9.
 
Nikon D5300istereo / monoiimini2.0iii
10.
 
Nikon D5500istereo / monoiimini2.0iii
11.
 
Nikon D5600istereo / monoiimini2.0iii
12.
 
Nikon D7200istereo / monoiimini2.0iii
13.
 
Sony A9 IIistereo / monoiimicro3.1iii
14.
 
Sony A77istereo / monoiimini2.0iii
15.
 
Sony A99 IIistereo / monoiimicro2.0iii
16.
 
Sony A850ii / iiimini2.0iii
17.
 
Sony A900ii / iiimini2.0iii
  empty Camera
Model
Hotshoe
Port
Internal
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
  empty Camera
Model

It is notable that the A99 has a headphone jack, which makes it possible to attach external headphones and monitor the quality of sound during the recording process. The D3400 lacks such a headphone port.

Studio photographers will appreciate that the Sony A99 (unlike the D3400) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Travel and landscape photographers will find it useful that the A99 has an internal geolocalization sensor and can record GPS coordinates in its EXIF data.

Both the D3400 and the A99 have been discontinued, but can regularly be found used on ebay. The A99 was replaced by the Sony A99, while the D3400 was followed by the Nikon D3500. Further information on the features and operation of the D3400 and A99 can be found, respectively, in the Nikon D3400 Manual (free pdf) or the online Sony A99 Manual.

Review summary

So how do things add up? Is the Nikon D3400 better than the Sony A99 or vice versa? The listing below highlights the relative strengths of the two models.

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Arguments in favor of the Nikon D3400:

  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • More compact: Is smaller (124x98mm vs 147x111mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 367g or 45 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (1200 versus 500) on a single battery charge.
  • Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More affordable: Was introduced into a lower priced category (82 percent cheaper at launch).
  • More modern: Reflects 3 years and 11 months of technical progress since the A99 launch.

ilogo

Reasons to prefer the Sony Alpha SLT-A99:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Better low-light sensitivity: Can shoot in dim conditions (0.4 stops ISO advantage).
  • Better sound: Can connect to an external microphone for higher quality sound recording.
  • 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 (0.71x vs 0.57x).
  • Easier setting verification: Features a control panel on top to check shooting parameters.
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 921k dots).
  • More flexible LCD: Has a full-flex 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.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • Faster burst: Shoots at higher frequency (6 vs 5 flaps/sec) to capture the decisive moment.
  • 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.
  • Easier geotagging: Features an internal GPS sensor to log localization data.
  • 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.
  • More heavily discounted: Has been around for much longer (launched in September 2012).

If the count of individual advantages (bullet points above) is taken as a guide, the A99 is the clear winner of the contest (19 : 9 points). However, the relative importance of the various individual camera aspects will vary according to personal preferences and needs, so that you might like to apply corresponding weights to the particular features before making a decision 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.

D3400 09:19 A99

How about other alternatives? Do the specifications of the Nikon D3400 and the Sony A99 place the cameras among the top in their class? Find out in the latest Best DSLR Camera listing whether the two cameras rank among the cream of the crop.

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says little about, for example, the shooting experience and imaging performance of the D3400 and the A99 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.

Expert reviews

This is why expert reviews 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
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
1.
 
Nikon D34004/5+4/576/1004/54.5/5 Aug 2016 US$ 499ebay.com
2.
 
Sony A995/5....84/1004.5/54.5/5 Sep 2012 US$ 2 799ebay.com
3.
 
Canon SL24/5+ +4/578/1004.5/54.5/5 Jun 2017 US$ 549ebay.com
4.
 
Nikon D5005/5+ +4.7/591/1004.5/55/5 Jan 2016 US$ 1 999ebay.com
5.
 
Nikon D32005/5+ +..73/1004.5/54.5/5 Apr 2012 US$ 599ebay.com
6.
 
Nikon D33003/5+..77/1004.5/54.5/5 Jan 2014 US$ 499ebay.com
7.
 
Nikon D35004/5..4/575/1004/54.5/5 Aug 2018 US$ 429ebay.com
8.
 
Nikon D52004/5+ +..79/1004.5/54.5/5 Nov 2012 US$ 749ebay.com
9.
 
Nikon D53004/5+ +..79/1004.5/54.5/5 Oct 2013 US$ 799ebay.com
10.
 
Nikon D55005/5+..79/1004.5/54.5/5 Jan 2015 US$ 899ebay.com
11.
 
Nikon D56004/5..4/579/1004.5/54/5 Nov 2016 US$ 699ebay.com
12.
 
Nikon D72004/5+ +..84/1004.5/54.5/5 Mar 2015 US$ 1 199ebay.com
13.
 
Sony A9 II....5/590/1005/55/5 Oct 2019 US$ 4 499 amazon.com
14.
 
Sony A775/591/100..81/100..5/5 Aug 2011 US$ 1 399ebay.com
15.
 
Sony A99 II....4.5/585/1004.5/54.5/5 Sep 2016 US$ 3 199ebay.com
16.
 
Sony A8503/5....75/100..4.5/5 Aug 2009 US$ 1 999ebay.com
17.
 
Sony A900..+ +..+ +4.5/55/5 Sep 2008 US$ 2 999ebay.com
Note: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.
  empty  Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price
Street
Price
  empty  Camera 
 Model 

The above review scores should be interpreted 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, please note that some of the review sites have changed their methodology and reporting over time.

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Check A99 offers at
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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 your choice using the following search menu. As an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool.

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  • Kodak AZ901
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  • Leitz Ur-Leica
  • Nikon 1 J4
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  • Pentax 645D
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  • Sony A9
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  • Sony A58
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  • Sony A850
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  • YI M1
  • Zeiss ZX1
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Specifications: Nikon D3400 vs Sony A99

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 D3400 Sony A99
Camera Type Digital single lens reflex Digital single lens reflex
Camera Lens Nikon F mount lenses Sony A mount lenses
Launch Date August 2016 September 2012
Launch Price USD 499 USD 2,799
Sensor Specs Nikon D3400 Sony A99
Sensor Technology CMOS CMOS
Sensor Format APS-C Sensor Full Frame Sensor
Sensor Size 23.5 x 15.6 mm 35.8 x 23.8 mm
Sensor Area 366.6 mm2 852.04 mm2
Sensor Diagonal 28.2 mm 43 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 5.96 μm
Pixel Density 6.55 MP/cm2 2.82 MP/cm2
Moiré control no AA filter Anti-Alias filter
Movie Capability 1080/60p Video 1080/60p Video
ISO Setting 100 - 25,600 ISO 100 - 25,600 ISO
ISO Boost no Enhancement 50 - 25,600 ISO
Image Processor EXPEED 4 BIONZ X
DXO Sensor Quality (score) 86 89
DXO Color Depth (bits) 24.8 25.0
DXO Dynamic Range (EV) 13.9 14.0
DXO Low Light (ISO) 1192 1555
Screen Specs Nikon D3400 Sony A99
Viewfinder Type Optical viewfinder Electronic viewfinder
Viewfinder Field of View 95% 100%
Viewfinder Magnification 0.57x 0.71x
Viewfinder Resolution 2359k dots
Top-Level Screen no Top Display Control Panel
LCD Framing Live View Live View
Rear LCD Size 3.0inch 3.0inch
LCD Resolution 921k dots 1229k dots
LCD Attachment Fixed screen Fully flexible screen
Shooting Specs Nikon D3400 Sony A99
Focus System Phase-detect AF Phase-detect AF
Manual Focusing Aidno Peaking FeatureFocus Peaking
Max Shutter Speed (mechanical) 1/4000s 1/8000s
Continuous Shooting 5 shutter flaps/s 6 shutter flaps/s
Shutter Life Expectancy100 000 actuations200 000 actuations
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 UHS-I
Connectivity Specs Nikon D3400 Sony A99
External Flash Hotshoe Hotshoe
Studio Flash no PC Sync PC Sync socket
USB Connector USB 2.0 USB 2.0
HDMI Port mini HDMI mini HDMI
Microphone Port no MIC socket External MIC port
Headphone Socket no Headphone port Headphone port
Wifi Support no Wifi no Wifi
Bluetooth Support Bluetooth built-in no Bluetooth
Geotagging no internal GPS GPS built-in
Body Specs Nikon D3400 Sony A99
Environmental Sealingnot weather sealedWeathersealed body
Battery Type Nikon EN-EL14a Sony NP-FM500H
Battery Life (CIPA)1200 shots per charge500 shots per charge
Body Dimensions 124 x 98 x 76 mm
(4.9 x 3.9 x 3.0 in)
147 x 111 x 78 mm
(5.8 x 4.4 x 3.1 in)
Camera Weight 445 g (15.7 oz) 812 g (28.6 oz)
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