Nikon D40 vs Sony A7 III
The Nikon D40 and the Sony Alpha A7 III are two digital cameras that were revealed to the public, respectively, in November 2006 and February 2018. The D40 is a DSLR, while the A7 III is a mirrorless interchangeable lens camera. The cameras are based on an APS-C (D40) and a full frame (A7 III) sensor. The Nikon has a resolution of 6 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.
|Nikon D40||Sony A7 III|
|Digital single lens reflex||Mirrorless system camera|
|Nikon F mount lenses||Sony E mount lenses|
|6 MP, APS-C Sensor||24 MP, Full Frame Sensor|
|no Video||4K/30p Video|
|ISO 200-1600 (200-3200)||ISO 100-51200 (50-204800)|
|Optical viewfinder||Electronic viewfinder (2359k dots)|
|2.5" LCD, 230k dots||3.0" LCD, 922k dots|
|Fixed screen (not touch-sensitive)||Tilting touchscreen|
|2.5 shutter flaps per second||10 shutter flaps per second|
|Lens stabilization only||In-body stabilization|
|Not weather sealed||Weathersealed body|
|470 shots per battery charge||610 shots per battery charge|
|124 x 94 x 64 mm, 522 g||127 x 96 x 74 mm, 650 g|
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D40 and the Sony Alpha A7 III? 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: Nikon D40 vs Sony A7 III
The side-by-side display below illustrates the physical size and weight of the Nikon D40 and the Sony A7 III. 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.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7 III is somewhat larger (5 percent) than the Nikon D40. Moreover, the A7 III is markedly heavier (25 percent) than the D40. It is noteworthy in this context that the A7 III is splash and dust-proof, while the D40 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 (D40) and the Sony FE Lens Catalog (A7 III). Mirrorless cameras, such as the A7 III, 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 D40 gets 470 shots out of its EN-EL9 battery, while the A7 III can take 610 images on a single charge of its NP-FZ100 power pack. The power pack in the A7 III can be charged via the USB port, which can be very convenient when travelling.
The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.
|Nikon D40»||124 mm||94 mm||64 mm||522 g||470||n||Nov 2006||499||-||Nikon D40|
|Sony A7 III«||127 mm||96 mm||74 mm||650 g||610||Y||Feb 2018||1,999||Sony A7 III|
|Nikon Z6« »||134 mm||101 mm||67 mm||675 g||310||Y||Aug 2018||1,999||Nikon Z6|
|Nikon D3400« »||124 mm||98 mm||76 mm||445 g||1200||n||Aug 2016||499||-||Nikon D3400|
|Nikon D3300« »||124 mm||98 mm||76 mm||430 g||700||n||Jan 2014||499||-||Nikon D3300|
|Nikon D3200« »||125 mm||96 mm||77 mm||505 g||540||n||Apr 2012||599||-||Nikon D3200|
|Nikon D3100« »||124 mm||96 mm||75 mm||505 g||550||n||Aug 2010||599||-||Nikon D3100|
|Nikon D3000« »||126 mm||97 mm||64 mm||536 g||500||n||Jul 2009||599||-||Nikon D3000|
|Nikon D40X« »||124 mm||94 mm||64 mm||522 g||520||n||Mar 2007||729||-||Nikon D40X|
|Nikon D80« »||132 mm||103 mm||77 mm||668 g||600||n||Aug 2006||999||-||Nikon D80|
|Nikon D50« »||133 mm||102 mm||76 mm||620 g||400||n||Apr 2005||749||-||Nikon D50|
|Nikon D70s« »||140 mm||111 mm||78 mm||679 g||500||n||Apr 2005||899||-||Nikon D70s|
|Panasonic GH5« »||139 mm||98 mm||87 mm||725 g||410||Y||Jan 2017||1,999||Panasonic GH5|
|Panasonic L10« »||135 mm||96 mm||78 mm||556 g||450||n||Aug 2007||599||-||Panasonic L10|
|Sony A7R III« »||127 mm||96 mm||74 mm||650 g||650||Y||Oct 2017||3,199||Sony A7R III|
|Sony A9« »||127 mm||96 mm||63 mm||673 g||650||Y||Apr 2017||4,499||Sony A9|
|Sony A7 II« »||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999||-||Sony A7 II|
|Note: Measurements and pricing do not include easily detachable parts, such as 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 D40 was launched at a markedly lower price (by 75 percent) than the A7 III, 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: Nikon D40 vs Sony A7 III
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. 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.
Of the two cameras under consideration, the Nikon D40 features an APS-C sensor and the Sony A7 III a full frame sensor. The sensor area in the A7 III is 129 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.
With 24MP, the A7 III offers a higher resolution than the D40 (6MP), but the A7 III has smaller individual pixels (pixel pitch of 5.94μm versus 7.85μm for the D40). Yet, the A7 III is a much more recent model (by 11 years and 3 months) than the D40, and its sensor will 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 the A7 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.
The resolution advantage of the Sony A7 III implies greater flexibility for cropping images or the possibility to print larger pictures. The maximum print size of the A7 III for good quality output (200 dots per inch) amounts to 30 x 20 inch or 76.2 x 50.8 cm, for very good quality (250 dpi) 24 x 16 inch or 61 x 40.6 cm, and for excellent quality (300 dpi) 20 x 13.3 inch or 50.8 x 33.9 cm. The corresponding values for the Nikon D40 are 15 x 10 inch or 38.2 x 25.4 cm for good quality, 12 x 8 inch or 30.6 x 20.3 cm for very good quality, and 10 x 6.7 inch or 25.5 x 16.9 cm for excellent quality prints.
The A7 III has on-sensor phase detect pixels, which results in fast and reliable autofocus acquisition even during live view operation.
The Nikon D40 has a native sensitivity range from ISO 200 to ISO 1600, which can be extended to ISO 200-3200. The corresponding ISO settings for the Sony Alpha A7 III are ISO 100 to ISO 51200, with the possibility to increase the ISO range to 50-204800.
For many cameras, data on sensor performance has been reported by DXO Mark. 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 consideration, the A7 III offers substantially better image quality than the D40 (overall score 40 points higher). The advantage is based on 4 bits higher color depth, 3.7 EV in additional dynamic range, and 2.7 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.
|Nikon D40»||APS-C||6.0||3008||2000||-||21.0||11.0||561||56||Nikon D40|
|Sony A7 III«||Full Frame||24.0||6000||4000||4K/30p||25.0||14.7||3730||96||Sony A7 III|
|Nikon Z6« »||Full Frame||24.3||6048||4024||4K/30p||25.3||14.3||3299||95||Nikon Z6|
|Nikon D3400« »||APS-C||24.0||6000||4000||1080/60p||24.8||13.9||1192||86||Nikon D3400|
|Nikon D3300« »||APS-C||24.0||6000||4000||1080/60p||24.3||12.8||1385||82||Nikon D3300|
|Nikon D3200« »||APS-C||24.1||6016||4000||1080/30p||24.1||13.2||1131||81||Nikon D3200|
|Nikon D3100« »||APS-C||14.2||4608||3072||1080/24p||22.5||11.3||919||67||Nikon D3100|
|Nikon D3000« »||APS-C||10.0||3872||2592||-||22.3||11.1||563||62||Nikon D3000|
|Nikon D40X« »||APS-C||10.0||3872||2592||-||22.4||11.4||516||63||Nikon D40X|
|Nikon D80« »||APS-C||10.0||3872||2592||-||22.1||11.2||524||61||Nikon D80|
|Nikon D50« »||APS-C||6.0||3008||2000||-||20.9||10.8||560||55||Nikon D50|
|Nikon D70s« »||APS-C||6.0||3008||2000||-||20.4||10.3||529||50||Nikon D70s|
|Panasonic GH5« »||Four Thirds||20.2||5184||3888||4K/60p||23.9||13.0||807||77||Panasonic GH5|
|Panasonic L10« »||Four Thirds||10.0||3648||2736||-||21.3||10.8||429||55||Panasonic L10|
|Sony A7R III« »||Full Frame||42.2||7952||5304||4K/30p||26.0||14.7||3523||100||Sony A7R III|
|Sony A9« »||Full Frame||24.0||6000||4000||4K/30p||24.9||13.3||3517||92||Sony A9|
|Sony A7 II« »||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90||Sony A7 II|
Many modern cameras are not only capable of taking still images, but also of capturing video footage. The A7 III indeed provides for movie recording, while the D40 does not. The highest resolution format that the A7 III can use is 4K/30p.
Feature comparison: Nikon D40 vs Sony A7 III
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A7 III has an electronic viewfinder (2359k dots), while the D40 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 A7 III offers a wider field of view (100%) than the one in the D40 (95%), so that a larger proportion of the captured image is visible in the finder. In addition, the viewfinder of the A7 III has a higher magnification (0.78x 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 D40 and Sony A7 III along with similar information for a selection of comparators.
|Nikon D40»||optical||n||2.5||230||fixed||n||1/4000s||2.5||Y||n||Nikon D40|
|Sony A7 III«||2359||n||3.0||922||tilting||Y||1/8000s||10.0||n||Y||Sony A7 III|
|Nikon Z6« »||3690||Y||3.2||2100||tilting||Y||1/8000s||12.0||n||Y||Nikon Z6|
|Nikon D3400« »||optical||n||3.0||921||fixed||n||1/4000s||5.0||Y||n||Nikon D3400|
|Nikon D3300« »||optical||n||3.0||921||fixed||n||1/4000s||5.0||Y||n||Nikon D3300|
|Nikon D3200« »||optical||n||3.0||921||fixed||n||1/4000s||4.0||Y||n||Nikon D3200|
|Nikon D3100« »||optical||n||3.0||230||fixed||n||1/4000s||3.0||Y||n||Nikon D3100|
|Nikon D3000« »||optical||n||3.0||230||fixed||n||1/4000s||3.0||Y||n||Nikon D3000|
|Nikon D40X« »||optical||n||2.5||230||fixed||n||1/4000s||3.0||Y||n||Nikon D40X|
|Nikon D80« »||optical||n||2.5||230||fixed||n||1/4000s||3.0||Y||n||Nikon D80|
|Nikon D50« »||optical||n||2.0||130||fixed||n||1/4000s||2.5||Y||n||Nikon D50|
|Nikon D70s« »||optical||n||2.0||130||fixed||n||1/8000s||3.0||Y||n||Nikon D70s|
|Panasonic GH5« »||3680||n||3.2||1620||swivel||Y||1/8000s||12.0||n||Y||Panasonic GH5|
|Panasonic L10« »||optical||n||2.5||207||swivel||n||1/4000s||3.0||Y||n||Panasonic L10|
|Sony A7R III« »||3686||n||3.0||1440||tilting||Y||1/8000s||10.0||n||Y||Sony A7R III|
|Sony A9« »||3686||n||3.0||1440||tilting||Y||1/8000s||20.0||n||Y||Sony A9|
|Sony A7 II« »||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y||Sony A7 II|
One difference between the cameras concerns the presence of an on-board flash. The D40 has one, while the A7 III does not. While the built-in flash of the D40 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 A7 III 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 Sony A7 III has an intervalometer built-in. This enables the photographer to capture time lapse sequences, such as flower blooming, a sunset or moon rise, without purchasing an external camera trigger and related software.
The D40 writes its imaging data to SDHC cards, while the A7 III uses SDXC or Memory Stick PRO Duo cards. The A7 III features dual card slots, which can be very useful in case a memory card fails. In contrast, the D40 only has one slot. The A7 III supports UHS-II cards on its first slot and UHS-I on its second one, while the D40 cannot take advantage of Ultra High Speed SD cards.
Connectivity comparison: Nikon D40 vs Sony A7 III
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 D40 and Sony Alpha A7 III and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
|Nikon D40»||Y||-||-||-||-||-||2.0||-||-||-||Nikon D40|
|Sony A7 III«||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7 III|
|Nikon Z6« »||Y||stereo||mono||Y||Y||micro||3.1||Y||-||Y||Nikon Z6|
|Nikon D3400« »||Y||mono||mono||-||-||mini||2.0||Y||-||Y||Nikon D3400|
|Nikon D3300« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D3300|
|Nikon D3200« »||Y||mono||mono||Y||-||mini||2.0||-||-||-||Nikon D3200|
|Nikon D3100« »||Y||mono||mono||-||-||mini||2.0||-||-||-||Nikon D3100|
|Nikon D3000« »||Y||-||-||-||-||-||2.0||-||-||-||Nikon D3000|
|Nikon D40X« »||Y||-||-||-||-||-||2.0||-||-||-||Nikon D40X|
|Nikon D80« »||Y||-||-||-||-||-||2.0||-||-||-||Nikon D80|
|Nikon D50« »||Y||-||-||-||-||-||2.0||-||-||-||Nikon D50|
|Nikon D70s« »||Y||-||-||-||-||-||2.0||-||-||-||Nikon D70s|
|Panasonic GH5« »||Y||stereo||mono||Y||Y||full||3.1||Y||-||Y||Panasonic GH5|
|Panasonic L10« »||Y||-||-||-||-||-||2.0||-||-||-||Panasonic L10|
|Sony A7R III« »||Y||stereo||mono||Y||Y||micro||3.1||Y||Y||Y||Sony A7R III|
|Sony A9« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||Y||Sony A9|
|Sony A7 II« »||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-||Sony A7 II|
It is notable that the A7 III offers wifi support, which can be a very convenient means to transfer image data to an off-camera location. In contrast, the D40 does not offer wifi capability.
The A7 III is a recent model that features in the current product line-up of Sony. In contrast, the D40 has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the D40 was succeeded by the Nikon D40X. 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: Nikon D40 vs Sony A7 III
So what is the bottom line? Is the Nikon D40 better than the Sony A7 III or vice versa? A synthesis of the relative strong points of each of the models is listed below.
Arguments in favor of the Nikon D40:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Less heavy: Is lighter (by 128g or 20 percent) and hence easier to carry around.
- Easier fill-in: Is equipped with a small onboard flash to brighten deep shadow areas.
- More affordable: Was introduced into a lower priced category (75 percent cheaper at launch).
- More heavily discounted: Has been available for much longer (launched in November 2006).
Advantages of the Sony Alpha A7 III:
- More detail: Has more megapixels (24 vs 6MP), which boosts linear resolution by 100%.
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores substantially higher (40 points) in the DXO overall evaluation.
- Richer colors: Generates noticeably more natural colors (4 bits more color depth).
- More dynamic range: Captures a broader range of light and dark details (3.7 EV of extra DR).
- Better low-light sensitivity: Can shoot in dim conditions (2.7 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 (0.78x 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.
- Faster shutter: Has higher mechanical shutter speed (1/8000s vs 1/4000s) to freeze action.
- Faster burst: Shoots at higher frequency (10 vs 2.5 flaps/sec) to capture the decisive moment.
- Less disturbing: Has an electronic shutter option for completely silent shooting.
- Easier time-lapse photography: Has an intervalometer built-in for low frequency shooting.
- Longer lasting: Gets more shots (610 versus 470) out of a single battery charge.
- 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.
- Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
- 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.
- Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
- Faster buffer clearing: Supports Ultra High Speed (UHS-II and UHS-I) SDXC cards.
- More modern: Reflects 11 years and 3 months of technical progress since the D40 launch.
If the count of relative strengths (bullet points above) is taken as a measure, the A7 III is the clear winner of the contest (30 : 6 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera. A professional 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.
How about other alternatives? Do the specifications of the Nikon D40 and the Sony A7 III 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 the spec-sheets of cameras can offer a general idea of their imaging potential, it remains incomplete and does no justice, for example, to the way the D40 or the A7 III perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable.
Expert reviews: Nikon D40 vs Sony A7 III
This is why hands-on reviews by experts are important. The adjacent summary-table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, and photographyblog). 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.
|Nikon D40»||81/100||+ +||o||5/5||4.5/5||Nov 2006||499||-||Nikon D40|
|Sony A7 III«||+ +||89/100||5/5||5/5||5/5||Feb 2018||1,999||Sony A7 III|
|Nikon Z6« »||-||-||4.5/5||-||5/5||Aug 2018||1,999||Nikon Z6|
|Nikon D3400« »||+||76/100||4/5||4.5/5||4.5/5||Aug 2016||499||-||Nikon D3400|
|Nikon D3300« »||+||77/100||4.5/5||4.5/5||4.5/5||Jan 2014||499||-||Nikon D3300|
|Nikon D3200« »||+ +||73/100||4.5/5||4.5/5||4.5/5||Apr 2012||599||-||Nikon D3200|
|Nikon D3100« »||+ +||72/100||4.5/5||5/5||4.5/5||Aug 2010||599||-||Nikon D3100|
|Nikon D3000« »||+||72/100||4/5||3.5/5||4.5/5||Jul 2009||599||-||Nikon D3000|
|Nikon D40X« »||79/100||+ +||4/5||o||4/5||Mar 2007||729||-||Nikon D40X|
|Nikon D80« »||+||+ +||o||4.5/5||4.5/5||Aug 2006||999||-||Nikon D80|
|Nikon D50« »||78/100||+ +||4/5||o||4.5/5||Apr 2005||749||-||Nikon D50|
|Nikon D70s« »||-||-||-||o||5/5||Apr 2005||899||-||Nikon D70s|
|Panasonic GH5« »||+ +||85/100||4.5/5||5/5||5/5||Jan 2017||1,999||Panasonic GH5|
|Panasonic L10« »||85/100||+||3.5/5||o||4/5||Aug 2007||599||-||Panasonic L10|
|Sony A7R III« »||+ +||90/100||4.5/5||5/5||5/5||Oct 2017||3,199||Sony A7R III|
|Sony A9« »||+ +||89/100||5/5||5/5||5/5||Apr 2017||4,499||Sony A9|
|Sony A7 II« »||+||82/100||4.5/5||5/5||5/5||Nov 2014||1,999||-||Sony A7 II|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (-) not available.|
Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. 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.
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. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
- Canon 300D vs Nikon D40
- Canon 750D vs Nikon D40
- Canon G16 vs Nikon D40
- Canon T1i vs Sony A7 III
- Leica D-LUX 6 vs Sony A7 III
- Nikon D40 vs Nikon D5100
- Nikon D40 vs Nikon D750
- Nikon D5100 vs Sony A7 III
- Olympus E-PL7 vs Sony A7 III
- Olympus TG-5 vs Sony A7 III
- Panasonic LX100 II vs Sony A7 III
- Sony A7 III vs Sony HX95
Specifications: Nikon D40 vs Sony A7 III
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 Model||Nikon D40||Sony A7 III|
|Camera Type||Digital single lens reflex||Mirrorless system camera|
|Camera Lens||Nikon F mount lenses||Sony E mount lenses|
|Launch Date||November 2006||February 2018|
|Launch Price||USD 499||USD 1999|
|Sensor Specs||Nikon D40||Sony A7 III|
|Sensor Format||APS-C Sensor||Full Frame Sensor|
|Sensor Size||23.7 x 15.6 mm||35.6 x 23.8 mm|
|Sensor Area||369.72 mm2||847.28 mm2|
|Sensor Diagonal||28.4 mm||42.8 mm|
|Sensor Resolution||6 Megapixels||24 Megapixels|
|Image Resolution||3008 x 2000 pixels||6000 x 4000 pixels|
|Pixel Pitch||7.85 μm||5.94 μm|
|Pixel Density||1.63 MP/cm2||2.83 MP/cm2|
|Moiré control||Anti-Alias filter||no AA filter|
|Movie Capability||no Video||4K/30p Video|
|ISO Setting||200-1600 ISO||100-51200 ISO|
|ISO Boost||200-3200 ISO||50-204800 ISO|
|DXO Sensor Quality (score)||56||96|
|DXO Color Depth (bits)||21.0||25.0|
|DXO Dynamic Range (EV)||11.0||14.7|
|DXO Low Light (ISO)||561||3730|
|Screen Specs||Nikon D40||Sony A7 III|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||2359k dots|
|LCD Framing||Live View|
|Rear LCD Size||2.5 inch||3.0 inch|
|LCD Resolution||230k dots||922k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Touch Input||no Touchscreen||Touchscreen|
|Shooting Specs||Nikon D40||Sony A7 III|
|Autofocus System||Phase-detect AF||On-Sensor Phase-detect|
|Manual Focusing Aid||No Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000/s||1/8000/s|
|Continuous Shooting||2.5 shutter flaps/s||10 shutter flaps/s|
|Shutter Life Expectancy||50 000 actuations||200 000 actuations|
|Electronic Shutter||no E-Shutter||YES|
|Time-Lapse Photography||no Intervalometer||Intervalometer built-in|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in Flash||no On-Board Flash|
|Storage Medium||SDHC cards||MS or SDXC cards|
|Second Storage Option||Single card slot||Dual card slots|
|UHS card support||no||Single UHS-II|
|Connectivity Specs||Nikon D40||Sony A7 III|
|USB Connector||USB 2.0||USB 3.1|
|HDMI Port||no 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||no Bluetooth||Bluetooth built-in|
|Body Specs||Nikon D40||Sony A7 III|
|Environmental Sealing||Not weather sealed||Weathersealed body|
|Battery Type||EN-EL9 power pack||NP-FZ100 power pack|
|Battery Life (CIPA)||470 shots per charge||610 shots per charge|
|In-Camera Charging||no USB charging||USB charging|
124 x 94 x 64 mm
(4.9 x 3.7 x 2.5 in)
127 x 96 x 74 mm
(5.0 x 3.8 x 2.9 in)
|Camera Weight||522 g (18.4 oz)||650 g (22.9 oz)|
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