Nikon D3400 vs Sony A68
The Nikon D3400 and the Sony Alpha SLT-A68 are two digital cameras that were announced, respectively, in August 2016 and November 2015. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with an APS-C 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.
Going beyond this snapshot of core features and characteristics, what are the differences between the Nikon D3400 and the Sony Alpha SLT-A68? 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.
The physical size and weight of the Nikon D3400 and the Sony A68 are illustrated 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 A68 is only available in black.
If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A68 is notably larger (22 percent) than the Nikon D3400. Moreover, the A68 is substantially heavier (37 percent) than the D3400. In this context, it is worth noting that neither the D3400 nor the A68 are weather-sealed.
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.
The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. In case you want to display and compare another camera duo, you can use the CAM-parator app to select your camera combination among a large number of options.
|1.||Nikon D3400||124 mm||98 mm||76 mm||445 g||1200||n||Aug 2016||499|
|2.||Sony A68||143 mm||104 mm||81 mm||610 g||540||n||Nov 2015||699|
|3.||Canon 77D||131 mm||100 mm||76 mm||540 g||600||n||Feb 2017||899|
|4.||Canon 200D||122 mm||93 mm||70 mm||453 g||650||n||Jun 2017||549|
|5.||Canon M100||108 mm||67 mm||35 mm||302 g||295||n||Aug 2017||499|
|6.||Nikon D3500||124 mm||97 mm||70 mm||365 g||1550||n||Aug 2018||429|
|7.||Nikon D7500||136 mm||104 mm||73 mm||720 g||950||Y||Apr 2017||1,299|
|8.||Nikon D5600||124 mm||97 mm||70 mm||465 g||970||n||Nov 2016||699|
|9.||Nikon D5500||124 mm||97 mm||70 mm||420 g||820||n||Jan 2015||899|
|10.||Nikon D3300||124 mm||98 mm||76 mm||430 g||700||n||Jan 2014||499|
|11.||Nikon D5300||125 mm||98 mm||76 mm||480 g||600||n||Oct 2013||799|
|12.||Nikon D3200||125 mm||96 mm||77 mm||505 g||540||n||Apr 2012||599|
|13.||Pentax K-S1||121 mm||93 mm||70 mm||558 g||410||n||Aug 2014||749|
|14.||Sony A7 II||127 mm||96 mm||60 mm||599 g||350||Y||Nov 2014||1,999|
|15.||Sony A77 II||143 mm||104 mm||81 mm||647 g||480||Y||May 2014||1,199|
|16.||Sony A58||129 mm||95 mm||78 mm||492 g||690||n||Feb 2013||599|
|17.||Sony A77||143 mm||104 mm||81 mm||732 g||470||Y||Aug 2011||1,399|
|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 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 29 percent) than the A68, 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.
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 more expensive and lead to bigger and heavier cameras and lenses.
Both cameras under consideration feature an APS-C sensor and have a format factor (sometimes also referred to as "crop factor") of 1.5. Within the spectrum of camera sensors, this places the review cameras among the medium-sized sensor cameras that aim to strike a balance between image quality and portability. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.
In terms of underlying technology, both cameras are build around CMOS sensors.
The two cameras under review do not only share the same sensor size, but also offer an identical resolution of 24 megapixels. This similarity in sensor specs implies that both the D3400 and the A68 have the same pixel density, as well as the same pixel size. It should, however, be noted that the D3400 is a somewhat more recent model (by 9 months) than the A68, and its sensor might have benefitted from technological advances during this time. 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 Sony Alpha SLT-A68 offers exactly the same ISO settings.
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 review, the D3400 has a notably higher overall DXO score than the A68 (overall score 7 points higher), which gives it an advantage in terms of imaging quality. This advantage is based on 0.7 bits higher color depth, 0.4 EV in additional dynamic range, and 0.8 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.
| DXO |
|14.||Sony A7 II||Full Frame||24.0||6000||4000||1080/60p||24.9||13.6||2449||90|
|15.||Sony A77 II||APS-C||24.0||6000||4000||1080/60p||..||..||..||..|
Many modern cameras cannot only take still pictures, but also record videos. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the D3400 provides a higher frame rate than the A68. It can shoot video footage at 1080/60p, while the Sony is limited to 1080/60i.
Apart from body and sensor, cameras can and do differ across a variety of features. For example, the A68 has an electronic viewfinder (1440k 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 viewfinders of both cameras offer the same magnification (0.57x), but the one in the A68 has a wider field of view (100%) than the finder in the D3400 (95%), so that a larger proportion of the captured image is visible. The adjacent table lists some of the other core features of the Nikon D3400 and Sony A68 along with similar information for a selection of comparators.
|14.||Sony A7 II||2400||n||3.0||1230||tilting||n||1/8000s||5.0||n||Y|
|15.||Sony A77 II||2359||Y||3.0||1229||full-flex||n||1/8000s||12.0||Y||Y|
One feature that differentiates the A68 and the D3400 is in-body image stabilization (IBIS). The A68 reduces the risk of handshake-induced blur with all attached lenses, while the D3400 offers no blur reduction with lenses that themselves do not provide optical image stabilization.
The D3400 writes its imaging data to SDXC cards, while the A68 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.
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-A68 and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.
| WiFi |
| NFC |
|14.||Sony A7 II||Y||stereo||mono||Y||Y||micro||2.0||Y||Y||-|
|15.||Sony A77 II||Y||stereo||mono||Y||-||mini||2.0||Y||Y||-|
It is notable that the A68 has a microphone port, which can help to improve the quality of audio recordings by attaching an external microphone. The D3400 does not feature such a mic input.
Both the D3400 and the A68 have been discontinued, but can regularly be found used on eBay. The D3400 was replaced by the Nikon D3500, while the A68 does not have a direct successor. 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.
So what conclusions can be drawn? Is there a clear favorite between the Nikon D3400 and the Sony A68? Which camera is better? Below is a summary of the relative strengths of each of the two contestants.
Arguments in favor of the Nikon D3400:
- Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
- Better image quality: Scores markedly higher (7 points) in the DXO overall assessment.
- Better low-light sensitivity: Requires less light for good images (0.8 stops ISO advantage).
- Better video: Provides higher movie framerates (1080/60p versus 1080/60i).
- Brighter framing: Features an optical viewfinder for clear, lag-free composition.
- Larger screen: Has a bigger rear LCD (3.0" vs 2.7") for image review and settings control.
- More detailed LCD: Has a higher resolution rear screen (921k vs 460k dots).
- More compact: Is smaller (124x98mm vs 143x104mm) and thus needs less room in the bag.
- Less heavy: Is lighter (by 165g or 27 percent) and hence easier to carry around.
- Longer lasting: Can take more shots (1200 versus 540) on a single battery charge.
- Easier wireless transfer: Supports Bluetooth for image sharing without cables.
- More affordable: Was introduced into a lower priced category (29 percent cheaper at launch).
- More modern: Is somewhat more recent (announced 9 months after the A68).
Advantages of the Sony Alpha SLT-A68:
- Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
- Better sound: Can connect to an external microphone for higher quality sound 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%).
- Easier setting verification: Features a control panel on top to check shooting parameters.
- More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
- Faster burst: Shoots at higher frequency (8 vs 5 flaps/sec) to capture the decisive moment.
- Sharper images: Has stabilization technology built-in to reduce the impact of hand-shake.
- More heavily discounted: Has been on the market for longer (launched in November 2015).
If the number of relative strengths (bullet points above) is taken as a guide, the D3400 emerges as the winner of the contest (13 : 10 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 sports photographer will view the differences between cameras in a way that diverges from the perspective of a street photog, and a person interested in family portraits has distinct needs from a landscape 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 D3400 and the Sony A68 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 A68 in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.
This is where reviews by experts come in. 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.
|1.||Nikon D3400||4/5||+||76/100||4/5||4.5/5||Aug 2016||499|
|2.||Sony A68||3/5||..||..||4/5||4/5||Nov 2015||699|
|3.||Canon 77D||4.5/5||..||82/100||4.5/5||4/5||Feb 2017||899|
|4.||Canon 200D||4/5||+ +||78/100||4.5/5||4.5/5||Jun 2017||549|
|5.||Canon M100||3/5||+||..||4/5||3.5/5||Aug 2017||499|
|6.||Nikon D3500||..||..||75/100||4/5||4.5/5||Aug 2018||429|
|7.||Nikon D7500||4.5/5||+ +||86/100||5/5||4.5/5||Apr 2017||1,299|
|8.||Nikon D5600||4/5||..||79/100||4.5/5||4/5||Nov 2016||699|
|9.||Nikon D5500||5/5||+||79/100||4.5/5||4.5/5||Jan 2015||899|
|10.||Nikon D3300||3/5||+||77/100||4.5/5||4.5/5||Jan 2014||499|
|11.||Nikon D5300||4/5||+ +||79/100||4.5/5||4.5/5||Oct 2013||799|
|12.||Nikon D3200||5/5||+ +||73/100||4.5/5||4.5/5||Apr 2012||599|
|13.||Pentax K-S1||4/5||..||..||4.5/5||4/5||Aug 2014||749|
|14.||Sony A7 II||5/5||+||82/100||4.5/5||5/5||Nov 2014||1,999|
|15.||Sony A77 II||4/5||..||80/100||4.5/5||5/5||May 2014||1,199|
|16.||Sony A58||3/5||..||..||4.5/5||4.5/5||Feb 2013||599|
|17.||Sony A77||5/5||91/100||81/100||..||5/5||Aug 2011||1,399|
|Notes: (+ +) highly recommended; (+) recommended; (o) reviewed; (..) not available.|
Care should be taken when interpreting the review scores above, 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 comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.
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 make a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.
Specifications: Nikon D3400 vs Sony A68
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 D3400||Sony A68|
|Camera Type||Digital single lens reflex||Digital single lens reflex|
|Camera Lens||Nikon F mount lenses||Sony A mount lenses|
|Launch Date||August 2016||November 2015|
|Launch Price||USD 499||USD 699|
|Sensor Specs||Nikon D3400||Sony A68|
|Sensor Format||APS-C Sensor||APS-C Sensor|
|Sensor Size||23.5 x 15.6 mm||23.5 x 15.6 mm|
|Sensor Area||366.6 mm2||366.6 mm2|
|Sensor Diagonal||28.2 mm||28.2 mm|
|Sensor Resolution||24 Megapixels||24 Megapixels|
|Image Resolution||6000 x 4000 pixels||6000 x 4000 pixels|
|Pixel Pitch||3.91 μm||3.91 μm|
|Pixel Density||6.55 MP/cm2||6.55 MP/cm2|
|Moiré control||no AA filter||Anti-Alias filter|
|Movie Capability||1080/60p Video||1080/60i Video|
|ISO Setting||100 - 25,600 ISO||100 - 25,600 ISO|
|Image Processor||EXPEED 4||BIONZ X|
|DXO Sensor Quality (score)||86||79|
|DXO Color Depth (bits)||24.8||24.1|
|DXO Dynamic Range (EV)||13.9||13.5|
|DXO Low Light (ISO)||1192||701|
|Screen Specs||Nikon D3400||Sony A68|
|Viewfinder Type||Optical viewfinder||Electronic viewfinder|
|Viewfinder Field of View||95%||100%|
|Viewfinder Resolution||1440k dots|
|Top-Level Screen||no Top Display||Control Panel|
|LCD Framing||Live View||Live View|
|Rear LCD Size||3.0inch||2.7inch|
|LCD Resolution||921k dots||460k dots|
|LCD Attachment||Fixed screen||Tilting screen|
|Shooting Specs||Nikon D3400||Sony A68|
|Focus System||Phase-detect AF||Phase-detect AF|
|Manual Focusing Aid||no Peaking Feature||Focus Peaking|
|Max Shutter Speed (mechanical)||1/4000s||1/4000s|
|Continuous Shooting||5 shutter flaps/s||8 shutter flaps/s|
|Shutter Life Expectancy||100 000 actuations||100 000 actuations|
|Image Stabilization||Lens stabilization only||In-body stabilization|
|Fill Flash||Build-in Flash||Build-in 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 A68|
|USB Connector||USB 2.0||USB 2.0|
|HDMI Port||mini HDMI||micro HDMI|
|Microphone Port||no MIC socket||External MIC port|
|Wifi Support||no Wifi||no Wifi|
|Bluetooth Support||Bluetooth built-in||no Bluetooth|
|Body Specs||Nikon D3400||Sony A68|
|Battery Life (CIPA)||1200 shots per charge||540 shots per charge|
124 x 98 x 76 mm
(4.9 x 3.9 x 3.0 in)
143 x 104 x 81 mm
(5.6 x 4.1 x 3.2 in)
|Camera Weight||445 g (15.7 oz)||610 g (21.5 oz)|
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