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Nikon D3400 vs Sony A7R II

The Nikon D3400 and the Sony Alpha A7R II are two digital cameras that were officially introduced, respectively, in August 2016 and June 2015. The D3400 is a DSLR, while the A7R II is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D3400) and a full frame (A7R II) sensor. The Nikon has a resolution of 24 megapixels, whereas the Sony provides 42.2 MP.

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 A7R II
Nikon D3400   Sony A7R II
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Sony E mount lenses
24 MP, APS-C Sensor 42.2 MP, Full Frame Sensor
1080/60p Video 4K/30p Video
ISO 100-25,600 ISO 100-25,600 (50 - 102,400)
Optical viewfinder Electronic viewfinder (2400k dots)
3.0 LCD, 921k dots 3.0 LCD, 1229k dots
Fixed screen (not touch-sensitive) Tilting screen (not touch-sensitive)
5 shutter flaps per second 5 shutter flaps per second
Lens stabilization onlyIn-body stabilization
not weather sealedWeathersealed body
1200 shots per battery charge290 shots per battery charge
124 x 98 x 76 mm, 445 g 127 x 96 x 60 mm, 625 g

Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D3400 and the Sony Alpha A7R II? 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.

Body comparison

An illustration of the physical size and weight of the Nikon D3400 and the Sony A7R II is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All size dimensions are rounded to the nearest millimeter.

The D3400 can be obtained in two different colors (black, red), while the A7R II is only available in black.

Size Nikon D3400 vs Sony A7R II
Compare D3400 versus A7R II top
Comparison D3400 or A7R II rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Nikon D3400 and the Sony A7R II are of equal size. However, the A7R II is substantially heavier (40 percent) than the D3400. It is noteworthy in this context that the A7R II 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. 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 (D3400) and the Sony FE Lens Catalog (A7R II). Mirrorless cameras, such as the A7R II, 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 D3400 gets 1200 shots out of its EN-EL14a battery, while the A7R II can take 290 images on a single charge of its NP-FW50 power pack. The power pack in the A7R II can be charged via the USB port, which can be very convenient when travelling.

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
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D3400 124 mm 98 mm 76 mm 445 g 1200 n Aug 2016 499 i
2.
 
Sony A7R II 127 mm 96 mm 60 mm 625 g 290 Y Jun 2015 3,199 i
3.
 
Canon SL2 122 mm 93 mm 70 mm 453 g 650 n Jun 2017 549 i
4.
 
Nikon D3500 124 mm 97 mm 70 mm 365 g 1550 n Aug 2018 429 i
5.
 
Nikon D5600 124 mm 97 mm 70 mm 465 g 970 n Nov 2016 699 i
6.
 
Nikon D500 147 mm 115 mm 81 mm 860 g 1240 Y Jan 2016 1,999 i
7.
 
Nikon D5500 124 mm 97 mm 70 mm 420 g 820 n Jan 2015 899 i
8.
 
Nikon D7200 136 mm 107 mm 76 mm 765 g 1110 Y Mar 2015 1,199 i
9.
 
Nikon D3300 124 mm 98 mm 76 mm 430 g 700 n Jan 2014 499 i
10.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799 i
11.
 
Nikon D3200 125 mm 96 mm 77 mm 505 g 540 n Apr 2012 599 i
12.
 
Nikon D5200 129 mm 98 mm 78 mm 555 g 500 n Nov 2012 749 i
13.
 
Sony A7S III 127 mm 97 mm 81 mm 699 g 600 Y Jul 2020 3,499 i
14.
 
Sony A7R III 127 mm 96 mm 74 mm 650 g 650 Y Oct 2017 3,199 i
15.
 
Sony A7S II 127 mm 96 mm 60 mm 627 g 370 Y Sep 2015 2,999 i
16.
 
Sony A7 II 127 mm 96 mm 60 mm 599 g 350 Y Nov 2014 1,999 i
17.
 
Sony A7R 127 mm 94 mm 48 mm 465 g 340 Y Oct 2013 2,299 i
Notes: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will obviously take relative prices into account. The manufacturer’s suggested retail prices give an idea on the placement of the camera in the maker’s lineup and the broader market. The D3400 was launched at a markedly lower price (by 84 percent) than the A7R II, 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.

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. 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 A7R II a full frame sensor. The sensor area in the A7R II is 135 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 A7R II sensor measures

With 42.2MP, the A7R II offers a higher resolution than the D3400 (24MP), but the A7R II nevertheless has larger individual pixels (pixel pitch of 4.52μm versus 3.91μm for the D3400) due to its larger sensor. However, the D3400 is a somewhat more recent model (by 1 year and 2 months) than the A7R II, and its sensor might have benefitted from technological advances during this time that enhance the light gathering capacity of its pixel-units. Coming back to sensor resolution, it should be mentioned that neither of the two cameras has an anti-alias filter installed, so they are able to capture all the detail the sensor resolves.

The resolution advantage of the Sony A7R II implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7R II for good quality output (200 dots per inch) amounts to 39.8 x 26.5 inches or 101 x 67.4 cm, for very good quality (250 dpi) 31.8 x 21.2 inches or 80.8 x 53.9 cm, and for excellent quality (300 dpi) 26.5 x 17.7 inches or 67.3 x 44.9 cm. The corresponding values for the Nikon D3400 are 30 x 20 inches or 76.2 x 50.8 cm for good quality, 24 x 16 inches or 61 x 40.6 cm for very good quality, and 20 x 13.3 inches or 50.8 x 33.9 cm for excellent quality prints.

The A7R II has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Nikon D3400 has a native sensitivity range from ISO 100 to ISO 25600. The corresponding ISO settings for the Sony Alpha A7R II are ISO 100 to ISO 25600, with the possibility to increase the ISO range to 50-102400.

D3400 versus A7R II MP

For many cameras, data on sensor performance has been reported by DXO Mark. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). Of the two cameras under consideration, the A7R II offers substantially better image quality than the D3400 (overall score 12 points higher). The advantage is based on 1.2 bits higher color depth, and 1.5 stops in additional low light sensitivity. 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
    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 40001080/60p24.813.91192 86
2.
 
Sony A7R II Full Frame 42.2 7952 53044K/30p26.013.93434 98
3.
 
Canon SL2 APS-C 24.0 6000 40001080/60p23.613.41041 79
4.
 
Nikon D3500 APS-C 24.0 6000 40001080/60p...... ..
5.
 
Nikon D5600 APS-C 24.0 6000 40001080/60p24.114.01306 84
6.
 
Nikon D500 APS-C 20.7 5568 37124K/30p24.014.01324 83
7.
 
Nikon D5500 APS-C 24.0 6000 40001080/60p24.114.01438 84
8.
 
Nikon D7200 APS-C 24.0 6000 40001080/60p24.514.61333 87
9.
 
Nikon D3300 APS-C 24.0 6000 40001080/60p24.312.81385 82
10.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.91338 83
11.
 
Nikon D3200 APS-C 24.1 6016 40001080/30p24.113.21131 81
12.
 
Nikon D5200 APS-C 24.0 6000 40001080/60i24.213.91284 84
13.
 
Sony A7S III Full Frame 12.0 4240 28324K/120p23.713.92520 86
14.
 
Sony A7R III Full Frame 42.2 7952 53044K/30p26.014.73523 100
15.
 
Sony A7S II Full Frame 12.0 4240 28324K/30p23.613.32993 85
16.
 
Sony A7 II Full Frame 24.0 6000 40001080/60p24.913.62449 90
17.
 
Sony A7R Full Frame 36.2 7360 49121080/60p25.614.12746 95

Many modern cameras cannot only take still pictures, but also record videos. The two cameras under consideration both have sensors whose read-out speed is fast enough to capture moving pictures, but the A7R II provides a better video resolution than the D3400. It can shoot movie footage at 4K/30p, while the Nikon is limited to 1080/60p.

Feature comparison

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7R II has an electronic viewfinder (2400k 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 A7R II 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 A7R II 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 adjacent table lists some of the other core features of the Nikon D3400 and Sony A7R II along with similar information for a selection of comparators.

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Core Features
    Camera
Model
Viewfinder
(Type or
000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
(000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Mech
Shutter
Speed
Shutter
Flaps
(1/sec)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
1.
 
Nikon D3400optical n 3.0 921 fixed n 1/4000s 5.0 Y n
2.
 
Sony A7R II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
3.
 
Canon SL2optical n 3.0 1040 swivel Y 1/4000s 5.0 Y n
4.
 
Nikon D3500optical n 3.0 921 fixed n 1/4000s 5.0 Y n
5.
 
Nikon D5600optical n 3.2 1037 swivel Y 1/4000s 5.0 Y n
6.
 
Nikon D500optical Y 3.2 2359 tilting Y 1/8000s 10.0 n n
7.
 
Nikon D5500optical n 3.2 1037 swivel Y 1/4000s 5.0 Y n
8.
 
Nikon D7200optical Y 3.2 1229 fixed n 1/8000s 6.0 Y n
9.
 
Nikon D3300optical n 3.0 921 fixed n 1/4000s 5.0 Y n
10.
 
Nikon D5300optical n 3.2 1037 swivel n 1/4000s 5.0 Y n
11.
 
Nikon D3200optical n 3.0 921 fixed n 1/4000s 4.0 Y n
12.
 
Nikon D5200optical n 3.0 921 swivel n 1/4000s 5.0 Y n
13.
 
Sony A7S III9440 n 3.0 1440 swivel Y 1/8000s 10.0 n Y
14.
 
Sony A7R III3686 n 3.0 1440 tilting Y 1/8000s 10.0 n Y
15.
 
Sony A7S II2400 n 3.0 1229 tilting n 1/8000s 5.0 n Y
16.
 
Sony A7 II2400 n 3.0 1230 tilting n 1/8000s 5.0 n Y
17.
 
Sony A7R2400 n 3.0 1230 tilting n 1/8000s 4.0 n n

One difference between the cameras concerns the presence of an on-board flash. The D3400 has one, while the A7R II 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 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 A7R II 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 D3400 writes its imaging data to SDXC cards, while the A7R II uses SDXC or Memory Stick PRO Duo cards. 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 A7R II and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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Input-Output Connections
    Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D3400Ymonomono--mini2.0--Y
2.
 
Sony A7R IIYstereomonoYYmicro2.0YY-
3.
 
Canon SL2YstereomonoY-mini2.0YYY
4.
 
Nikon D3500Ymonomono--mini2.0--Y
5.
 
Nikon D5600YstereomonoY-mini2.0YYY
6.
 
Nikon D500YstereomonoYYmini3.0YYY
7.
 
Nikon D5500YstereomonoY-mini2.0Y--
8.
 
Nikon D7200YstereomonoYYmini2.0YY-
9.
 
Nikon D3300YmonomonoY-mini2.0---
10.
 
Nikon D5300YstereomonoY-mini2.0Y--
11.
 
Nikon D3200YmonomonoY-mini2.0---
12.
 
Nikon D5200YstereomonoY-mini2.0---
13.
 
Sony A7S IIIYstereomonoYYfull3.2Y-Y
14.
 
Sony A7R IIIYstereomonoYYmicro3.1YYY
15.
 
Sony A7S IIYstereomonoYYmicro2.0YY-
16.
 
Sony A7 IIYstereomonoYYmicro2.0YY-
17.
 
Sony A7RYstereomonoYYmicro2.0YY-

It is notable that the A7R II offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D3400 does not provide wifi capability.

Both the D3400 and the A7R II have been discontinued, but can regularly be found used on eBay. The A7R II was replaced by the Sony Alpha A7R III, while the D3400 was followed by the Nikon D3500. Further information on the two cameras (e.g. user guides, manuals), as well as related accessories, can be found on the official Nikon and Sony websites.

Review summary

So what conclusions can be drawn? Is the Nikon D3400 better than the Sony A7R II 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:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Less heavy: Is lighter (by 180g or 29 percent) and hence easier to carry around.
  • Longer lasting: Can take more shots (1200 versus 290) 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 (84 percent cheaper at launch).
  • More modern: Is somewhat more recent (announced 1 year and 2 months after the A7R II).

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Advantages of the Sony Alpha A7R II:

  • More detail: Has more megapixels (42.2 vs 24MP), which boosts linear resolution by 33%.
  • Better image quality: Scores substantially higher (12 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.2 bits more color depth).
  • Better low-light sensitivity: Can shoot in dim conditions (1.5 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: 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 (0.78x vs 0.57x).
  • More detailed LCD: Has a higher resolution rear screen (1229k vs 921k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
  • 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 file upload: Has wifi built in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • More heavily discounted: Has been on the market for longer (launched in June 2015).

If the count of relative strengths (bullet points above) is taken as a measure, the A7R II is the clear winner of the contest (22 : 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. 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 07:22 A7R II

How about other alternatives? Do the specifications of the Nikon D3400 and the Sony A7R II 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 partial and cannot reveal, for example, the shooting experience and imaging performance when actually working with the D3400 or the A7R II. 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], 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D34004/5+76/1004/54.5/5 Aug 2016 499 i
2.
 
Sony A7R II5/5+ +90/1005/55/5 Jun 2015 3,199 i
3.
 
Canon SL24/5+ +78/1004.5/54.5/5 Jun 2017 549 i
4.
 
Nikon D3500....75/1004/54.5/5 Aug 2018 429 i
5.
 
Nikon D56004/5..79/1004.5/54/5 Nov 2016 699 i
6.
 
Nikon D5005/5+ +91/1004.5/55/5 Jan 2016 1,999 i
7.
 
Nikon D55005/5+79/1004.5/54.5/5 Jan 2015 899 i
8.
 
Nikon D72004/5+ +84/1004.5/54.5/5 Mar 2015 1,199 i
9.
 
Nikon D33003/5+77/1004.5/54.5/5 Jan 2014 499 i
10.
 
Nikon D53004/5+ +79/1004.5/54.5/5 Oct 2013 799 i
11.
 
Nikon D32005/5+ +73/1004.5/54.5/5 Apr 2012 599 i
12.
 
Nikon D52004/5+ +79/1004.5/54.5/5 Nov 2012 749 i
13.
 
Sony A7S III..+ +91/1004.5/55/5 Jul 2020 3,499 i
14.
 
Sony A7R III..+ +90/1004.5/55/5 Oct 2017 3,199 i
15.
 
Sony A7S II5/5+..4.5/55/5 Sep 2015 2,999 i
16.
 
Sony A7 II5/5+82/1004.5/55/5 Nov 2014 1,999 i
17.
 
Sony A7R5/5+ +82/1004.5/55/5 Oct 2013 2,299 i
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

The above review scores should be interpreted with care, though. The ratings were established in reference to similarly priced cameras that were available in the market at the time of the review. Hence, a score should always be seen in the context of the camera's market launch date and its price, 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.

Nikon D3400:
Check Ebay offers
Sony A7R II:
Check Ebay offers

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 D3400 vs Sony A7R II

    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 A7R II
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Sony E mount lenses
    Launch Date August 2016 June 2015
    Launch Price USD 499 USD 3,199
    Sensor Specs Nikon D3400 Sony A7R II
    Sensor Technology CMOS BSI-CMOS
    Sensor Format APS-C Sensor Full Frame Sensor
    Sensor Size 23.5 x 15.6 mm 35.9 x 24.0 mm
    Sensor Area 366.6 mm2 861.6 mm2
    Sensor Diagonal 28.2 mm 43.2 mm
    Crop Factor 1.5x 1.0x
    Sensor Resolution 24 Megapixels 42.2 Megapixels
    Image Resolution 6000 x 4000 pixels 7952 x 5304 pixels
    Pixel Pitch 3.91 μm 4.52 μm
    Pixel Density 6.55 MP/cm2 4.90 MP/cm2
    Moiré control no AA filter no AA filter
    Movie Capability 1080/60p Video 4K/30p Video
    ISO Setting 100 - 25,600 ISO 100 - 25,600 ISO
    ISO Boost no Enhancement 50 - 102,400 ISO
    Image Processor EXPEED 4 BIONZ X
    DXO Sensor Quality (score) 86 98
    DXO Color Depth (bits) 24.8 26.0
    DXO Dynamic Range (EV) 13.9 13.9
    DXO Low Light (ISO) 1192 3434
    Screen Specs Nikon D3400 Sony A7R II
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.57x 0.78x
    Viewfinder Resolution 2400k dots
    LCD Framing Live View Live View
    Rear LCD Size 3.0inch 3.0inch
    LCD Resolution 921k dots 1229k dots
    LCD Attachment Fixed screen Tilting screen
    Shooting Specs Nikon D3400 Sony A7R II
    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 5 shutter flaps/s
    Shutter Life Expectancy100 000 actuations500 000 actuations
    Electronic Shutterno E-ShutterYES
    Image StabilizationLens stabilization onlyIn-body stabilization
    Fill Flash Built-in Flash no On-Board Flash
    Storage Medium SDXC cards MS or SDXC cards
    Second Storage Option Single card slot Single card slot
    UHS card support UHS-I UHS-I
    Connectivity Specs Nikon D3400 Sony A7R II
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Headphone Socket no Headphone port Headphone port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Bluetooth Support Bluetooth built-in no Bluetooth
    Body Specs Nikon D3400 Sony A7R II
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type EN-EL14a NP-FW50
    Battery Life (CIPA)1200 shots per charge290 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 124 x 98 x 76 mm
    (4.9 x 3.9 x 3.0 in)
    127 x 96 x 60 mm
    (5.0 x 3.8 x 2.4 in)
    Camera Weight 445 g (15.7 oz) 625 g (22.0 oz)

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