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Nikon D40X vs Sony A6400

The Nikon D40X and the Sony Alpha A6400 are two digital cameras that were revealed to the public, respectively, in March 2007 and January 2019. The D40X is a DSLR, while the A6400 is a mirrorless interchangeable lens camera. Both cameras are equipped with an APS-C sensor. The Nikon has a resolution of 10 megapixels, whereas the Sony provides 24 MP.

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

Headline Specifications
Nikon D40X
versus
Sony A6400
Nikon D40X   Sony A6400
Digital single lens reflex Mirrorless system camera
Nikon F mount lenses Sony E mount lenses
10 MP – APS-C sensor 24 MP – APS-C sensor
no Video 4K/30p Video
ISO 100-1,600 (100 - 3,200) ISO 100-32,000 (100 - 102,400)
Optical viewfinder Electronic viewfinder (2359k dots)
2.5" LCD – 230k dots 3.0" LCD – 922k dots
Fixed screen (not touch-sensitive) Tilting touchscreen
3 shutter flaps per second 11 shutter flaps per second
not weather sealedWeathersealed body
520 shots per battery charge410 shots per battery charge
124 x 94 x 64 mm, 522 g 120 x 67 x 50 mm, 403 g
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Check D40X offers at
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Check A6400 price at
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Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D40X and the Sony Alpha A6400? 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

The physical size and weight of the Nikon D40X and the Sony A6400 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 size dimensions are rounded to the nearest millimeter.

The D40X can be obtained in two different colors (black, silver), while the A6400 is only available in black.

Size Nikon D40X vs Sony A6400
Compare D40X versus A6400 top
Comparison D40X or A6400 rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A6400 is considerably smaller (31 percent) than the Nikon D40X. Moreover, the A6400 is markedly lighter (23 percent) than the D40X. It is noteworthy in this context that the A6400 is splash and dust-proof, while the D40X 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. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can compare the optics available for the two cameras in the Nikon Lens Catalog (D40X) and the Sony E-Mount Lens Catalog (A6400). Mirrorless cameras, such as the A6400, 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 D40X gets 520 shots out of its EN-EL9 battery, while the A6400 can take 410 images on a single charge of its NP-FW50 power pack. The power pack in the A6400 can be charged via the USB port, which can be very convenient when travelling.

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. 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
    Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
Weather
Sealing
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D40X 124 mm 94 mm 64 mm 522 g 520 n Mar 2007 729ebay.com
2.
 
Sony A6400 120 mm 67 mm 50 mm 403 g 410 Y Jan 2019 899 amazon.com
3.
 
Nikon D5300 125 mm 98 mm 76 mm 480 g 600 n Oct 2013 799ebay.com
4.
 
Nikon D3100 124 mm 96 mm 75 mm 505 g 550 n Aug 2010 599ebay.com
5.
 
Nikon D3000 126 mm 97 mm 64 mm 536 g 500 n Jul 2009 599ebay.com
6.
 
Nikon D5000 127 mm 104 mm 80 mm 590 g 510 n Apr 2009 749ebay.com
7.
 
Nikon D60 126 mm 94 mm 64 mm 522 g 500 n Jan 2008 629ebay.com
8.
 
Nikon D90 132 mm 103 mm 77 mm 703 g 850 n Aug 2008 1,299ebay.com
9.
 
Nikon D40 124 mm 94 mm 64 mm 522 g 470 n Nov 2006 499ebay.com
10.
 
Nikon D80 132 mm 103 mm 77 mm 668 g 600 n Aug 2006 999ebay.com
11.
 
Nikon D50 133 mm 102 mm 76 mm 620 g 400 n Apr 2005 749ebay.com
12.
 
Olympus E-420 130 mm 91 mm 53 mm 440 g 500 n Mar 2008 599ebay.com
13.
 
Panasonic L10 135 mm 96 mm 78 mm 556 g 450 n Aug 2007 599ebay.com
14.
 
Sony A6100 120 mm 67 mm 59 mm 396 g 420 n Aug 2019 749ebay.com
15.
 
Sony A6300 120 mm 67 mm 49 mm 404 g 400 Y Feb 2016 999ebay.com
16.
 
Sony A5100 110 mm 63 mm 36 mm 283 g 400 n Aug 2014 549ebay.com
17.
 
Sony A6000 120 mm 67 mm 45 mm 344 g 360 n Feb 2014 599ebay.com
Note: Measurements and pricing do not include easily detachable parts, such as add-on or interchangeable lenses or optional viewfinders.

Any camera decision will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The D40X was launched at a somewhat lower price (by 19 percent) than the A6400, which makes it more attractive for photographers on a tight budget. 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 size of the sensor inside a digital camera is one of the key determinants 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. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature an APS-C sensor, but their sensors differ slightly in size. The sensor area in the A6400 is 2 percent smaller. They nevertheless have the same format factor of 1.5. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Nikon D40X and Sony A6400 sensor measures

Despite having a slightly smaller sensor, the A6400 offers a higher resolution of 24 megapixels, compared with 10 MP of the D40X. This megapixels advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 3.91μm versus 6.11μm for the D40X). However, it should be noted that the A6400 is much more recent (by 11 years and 10 months) than the D40X, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently.

The resolution advantage of the Sony A6400 implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A6400 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 D40X are 19.4 x 13 inches or 49.2 x 32.9 cm for good quality, 15.5 x 10.4 inches or 39.3 x 26.3 cm for very good quality, and 12.9 x 8.6 inches or 32.8 x 21.9 cm for excellent quality prints.

The A6400 has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.

The Nikon D40X has a native sensitivity range from ISO 100 to ISO 1600, which can be extended to ISO 100-3200. The corresponding ISO settings for the Sony Alpha A6400 are ISO 100 to ISO 32000, with the possibility to increase the ISO range to 100-102400.

In terms of underlying technology, the D40X is build around a CCD sensor, while the A6400 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.

D40X versus A6400 MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. 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 A6400 offers substantially better image quality than the D40X (overall score 20 points higher). The advantage is based on 1.6 bits higher color depth, 2.2 EV in additional dynamic range, and 1.5 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
    Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
1.
 
Nikon D40X APS-C 10.0 3872 2592none22.411.451663
2.
 
Sony A6400 APS-C 24.0 6000 40004K/30p24.013.6143183
3.
 
Nikon D5300 APS-C 24.0 6000 40001080/60p24.013.9133883
4.
 
Nikon D3100 APS-C 14.2 4608 30721080/24p22.511.391967
5.
 
Nikon D3000 APS-C 10.0 3872 2592none22.311.156362
6.
 
Nikon D5000 APS-C 12.2 4288 2848720/24p22.712.586872
7.
 
Nikon D60 APS-C 10.0 3872 2592none22.511.456265
8.
 
Nikon D90 APS-C 12.2 4288 2848720/24p22.712.597773
9.
 
Nikon D40 APS-C 6.0 3008 2000none21.011.056156
10.
 
Nikon D80 APS-C 10.0 3872 2592none22.111.252461
11.
 
Nikon D50 APS-C 6.0 3008 2000none20.910.856055
12.
 
Olympus E-420 Four Thirds 10.0 3648 2736none21.510.452756
13.
 
Panasonic L10 Four Thirds 10.0 3648 2736none21.310.842955
14.
 
Sony A6100 APS-C 24.0 6000 40004K/30p24.113.6194784
15.
 
Sony A6300 APS-C 24.0 6000 40004K/30p24.413.7143785
16.
 
Sony A5100 APS-C 24.0 6000 40001080/60p23.812.7134780
17.
 
Sony A6000 APS-C 24.0 6000 40001080/60p24.113.1134782
Note: DXO values in italics represent estimates based on sensor size and age.

Many modern cameras are not only capable of taking still images, but can also record movies. The A6400 indeed provides for movie recording, while the D40X does not. The highest resolution format that the A6400 can use is 4K/30p.

Feature comparison

Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A6400 has an electronic viewfinder (2359k dots), while the D40X 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 A6400 offers a wider field of view (100%) than the one in the D40X (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A6400 has a higher magnification (0.70x vs 0.53x), 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 D40X and Sony A6400 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
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 D40Xoptical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
2.
 
Sony A64002359 n3.0 / 922 tilting Y 1/4000s 11.0/s Y n
3.
 
Nikon D5300optical n3.2 / 1037 swivel n 1/4000s 5.0/s Y n
4.
 
Nikon D3100optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
5.
 
Nikon D3000optical n3.0 / 230 fixed n 1/4000s 3.0/s Y n
6.
 
Nikon D5000optical n2.7 / 230 full-flex n 1/4000s 4.0/s Y n
7.
 
Nikon D60optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
8.
 
Nikon D90optical Y3.0 / 920 fixed n 1/4000s 4.5/s Y n
9.
 
Nikon D40optical n2.5 / 230 fixed n 1/4000s 2.5/s Y n
10.
 
Nikon D80optical n2.5 / 230 fixed n 1/4000s 3.0/s Y n
11.
 
Nikon D50optical n2.0 / 130 fixed n 1/4000s 2.5/s Y n
12.
 
Olympus E-420optical n2.7 / 215 fixed n 1/4000s 3.5/s Y n
13.
 
Panasonic L10optical n2.5 / 207 swivel n 1/4000s 3.0/s Y n
14.
 
Sony A61001440 n3.0 / 922 tilting Y 1/4000s 11.0/s Y n
15.
 
Sony A63002359 n3.0 / 922 tilting n 1/4000s 11.0/s Y n
16.
 
Sony A5100none n3.0 / 922 tilting Y 1/4000s 6.0/s Y n
17.
 
Sony A60001440 n3.0 / 922 tilting n 1/4000s 11.0/s Y n
Notes: *) Information refers to the mechanical shutter, unless the camera only has an electronic one.

One differentiating feature between the two cameras concerns the touch sensitivity of the rear screen. The A6400 has a touchscreen, while the D40X has a conventional panel. Touch control can be particularly helpful, for example, for setting the focus point.

The A6400 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 D40X does not have a selfie-screen.

The reported shutter speed information refers to the use of the mechanical shutter. Yet, some cameras only have an electronic shutter, while others have an electronic shutter in addition to a mechanical one. In fact, the A6400 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 D40X writes its imaging data to SDHC cards, while the A6400 uses SDXC or Memory Stick PRO Duo cards. The A6400 supports UHS-I cards (Ultra High Speed data transfer of up to 104 MB/s), while the D40X cannot take advantage of Ultra High Speed SD cards.

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 D40X and Sony Alpha A6400 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
Mic / Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Port
WiFi
Support
NFC
Support
Bluetooth
Support
1.
 
Nikon D40XY- / ----2.0---
2.
 
Sony A6400Ystereo / monoY-micro2.0YYY
3.
 
Nikon D5300Ystereo / monoY-mini2.0Y--
4.
 
Nikon D3100Ymono / mono--mini2.0---
5.
 
Nikon D3000Y- / ----2.0---
6.
 
Nikon D5000Ymono / mono--mini2.0---
7.
 
Nikon D60Y- / ----2.0---
8.
 
Nikon D90Ymono / mono--mini2.0---
9.
 
Nikon D40Y- / ----2.0---
10.
 
Nikon D80Y- / ----2.0---
11.
 
Nikon D50Y- / ----2.0---
12.
 
Olympus E-420Y- / ----2.0---
13.
 
Panasonic L10Y- / ----2.0---
14.
 
Sony A6100Ystereo / monoY-micro2.0YYY
15.
 
Sony A6300Ystereo / monoY-micro2.0YY-
16.
 
Sony A5100-stereo / mono--micro2.0YY-
17.
 
Sony A6000Ystereo / mono--micro2.0YY-

It is notable that the A6400 offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D40X does not provide wifi capability.

The A6400 is a recent model that features in the current product line-up of Sony. In contrast, the D40X has been discontinued (but can be found pre-owned on ebay). As a replacement in the same line of cameras, the D40X was succeeded by the Nikon D60 . Further information on the features and operation of the D40X and A6400 can be found, respectively, in the Nikon D40X Manual (free pdf) or the online Sony A6400 Manual.

Review summary

So how do things add up? Is there a clear favorite between the Nikon D40X and the Sony A6400? Which camera is better? A synthesis of the relative strong points of each of the models is listed below.

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Arguments in favor of the Nikon D40X:

  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Longer lasting: Can take more shots (520 versus 410) on a single battery charge.
  • More affordable: Was introduced into a lower priced segment (19 percent cheaper at launch).
  • More heavily discounted: Has been available for much longer (launched in March 2007).

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Advantages of the Sony Alpha A6400:

  • More detail: Has more megapixels (24 vs 10MP), which boosts linear resolution by 55%.
  • Better image quality: Scores substantially higher (20 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.6 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (2.2 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (1.5 stops ISO advantage).
  • Broader imaging potential: Can capture not only stills but also 4K/30p video.
  • Better live-view autofocus: Features on-sensor phase-detection for more confident autofocus.
  • 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 (0.70x vs 0.53x).
  • Larger screen: Has a bigger rear LCD (3.0" vs 2.5") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (922k vs 230k dots).
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • Faster burst: Shoots at higher frequency (11 vs 3 flaps/sec) to capture the decisive moment.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (120x67mm vs 124x94mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 119g or 23 percent) and is thus easier to take along.
  • Easier travel charging: Can be conveniently charged via its USB port.
  • Better sealing: Is splash and dust sealed for shooting in inclement weather conditions.
  • 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.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • Faster buffer clearing: Has an SD card interface that supports the UHS-I standard.
  • More modern: Reflects 11 years and 10 months of technical progress since the D40X launch.

If the count of individual advantages (bullet points above) is taken as a guide, the A6400 is the clear winner of the contest (27 : 4 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 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.

D40X 04:27 A6400

How about other alternatives? Do the specifications of the Nikon D40X and the Sony A6400 place the cameras among the top in their class? Find out in the latest Best DSLR Camera and Best Mirrorless Interchangeable Lens Camera listings whether the two cameras rank among the cream of the crop.

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the D40X or the A6400 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
     Camera 
 Model 
 AP 
 score 
 CL 
 score 
 DCW 
 score 
 DPR 
 score 
 EPZ 
 score 
 PB 
 score 
Camera
Launch
Launch
Price (USD)
Street
Price
1.
 
Nikon D40X..79/100..+ +4/54/5 Mar 2007 729ebay.com
2.
 
Sony A64004/5+4/585/1004.5/54/5 Jan 2019 899 amazon.com
3.
 
Nikon D53004/5+ +..79/1004.5/54.5/5 Oct 2013 799ebay.com
4.
 
Nikon D31005/5+ +..72/1004.5/54.5/5 Aug 2010 599ebay.com
5.
 
Nikon D3000..+..72/1004/54.5/5 Jul 2009 599ebay.com
6.
 
Nikon D5000..+ +..75/1004/54.5/5 Apr 2009 749ebay.com
7.
 
Nikon D60..80/100..+ +4/54.5/5 Jan 2008 629ebay.com
8.
 
Nikon D90..+ +..+ +4/54.5/5 Aug 2008 1,299ebay.com
9.
 
Nikon D40..81/100..+ +o4.5/5 Nov 2006 499ebay.com
10.
 
Nikon D80..+..+ +o4.5/5 Aug 2006 999ebay.com
11.
 
Nikon D50..78/100..+ +4/54.5/5 Apr 2005 749ebay.com
12.
 
Olympus E-420..85/100..+ +4/54.5/5 Mar 2008 599ebay.com
13.
 
Panasonic L10..85/100..+3.5/54/5 Aug 2007 599ebay.com
14.
 
Sony A6100....4/582/1004/55/5 Aug 2019 749ebay.com
15.
 
Sony A63004.5/5+..85/1005/55/5 Feb 2016 999ebay.com
16.
 
Sony A51004.5/5+....4.5/55/5 Aug 2014 549ebay.com
17.
 
Sony A60005/5+4.5/580/1004.5/55/5 Feb 2014 599ebay.com
Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.

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 comparisons of ratings among very different cameras or across long time periods have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

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Check D40X offers at
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Check A6400 price at
amazon.com

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: Nikon D40X vs Sony A6400

    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 D40X Sony A6400
    Camera Type Digital single lens reflex Mirrorless system camera
    Camera Lens Nikon F mount lenses Sony E mount lenses
    Launch Date March 2007 January 2019
    Launch Price USD 729 USD 899
    Sensor Specs Nikon D40X Sony A6400
    Sensor Technology CCD CMOS
    Sensor Format APS-C Sensor APS-C Sensor
    Sensor Size 23.6 x 15.8 mm 23.5 x 15.6 mm
    Sensor Area 372.88 mm2 366.6 mm2
    Sensor Diagonal 28.4 mm 28.2 mm
    Crop Factor 1.5x 1.5x
    Sensor Resolution 10 Megapixels 24 Megapixels
    Image Resolution 3872 x 2592 pixels 6000 x 4000 pixels
    Pixel Pitch 6.11 μm 3.91 μm
    Pixel Density 2.69 MP/cm2 6.55 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability no Video 4K/30p Video
    ISO Setting 100 - 1,600 ISO 100 - 32,000 ISO
    ISO Boost 100 - 3,200 ISO 100 - 102,400 ISO
    Image Processor EXPEED BIONZ X
    DXO Sensor Quality (score) 63 83
    DXO Color Depth (bits) 22.4 24
    DXO Dynamic Range (EV) 11.4 13.6
    DXO Low Light (ISO) 516 1431
    Screen Specs Nikon D40X Sony A6400
    Viewfinder Type Optical viewfinder Electronic viewfinder
    Viewfinder Field of View 95% 100%
    Viewfinder Magnification 0.53x 0.70x
    Viewfinder Resolution 2359k dots
    LCD Framing Live View
    Rear LCD Size 2.5inch 3.0inch
    LCD Resolution 230k dots 922k dots
    LCD Attachment Fixed screen Tilting screen
    Touch Input no Touchscreen Touchscreen
    Shooting Specs Nikon D40X Sony A6400
    Focus System Phase-detect AF On-Sensor Phase-detect
    Manual Focusing Aidno Peaking FeatureFocus Peaking
    Max Shutter Speed (mechanical) 1/4000s 1/4000s
    Continuous Shooting 3 shutter flaps/s 11 shutter flaps/s
    Shutter Life Expectancy50 000 actuations200 000 actuations
    Electronic Shutterno E-ShutterYES
    Fill Flash Built-in Flash Built-in Flash
    Storage Medium SDHC cards MS or SDXC cards
    Single or Dual Card Slots Single card slot Single card slot
    UHS card support no UHS-I
    Connectivity Specs Nikon D40X Sony A6400
    External Flash Hotshoe Hotshoe
    USB Connector USB 2.0 USB 2.0
    HDMI Port no HDMI micro HDMI
    Microphone Port no MIC socket External MIC port
    Wifi Support no Wifi Wifi built-in
    Near-Field Communication no NFC NFC built-in
    Bluetooth Support no Bluetooth Bluetooth built-in
    Body Specs Nikon D40X Sony A6400
    Environmental Sealingnot weather sealedWeathersealed body
    Battery Type EN-EL9 NP-FW50
    Battery Life (CIPA)520 shots per charge410 shots per charge
    In-Camera Charging no USB charging USB charging
    Body Dimensions 124 x 94 x 64 mm
    (4.9 x 3.7 x 2.5 in)
    120 x 67 x 50 mm
    (4.7 x 2.6 x 2.0 in)
    Camera Weight 522 g (18.4 oz) 403 g (14.2 oz)
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