Are you looking for the best camera to suit your needs? Due to a wide range of options, making a wise and weighted decision can be rather challenging. Which specs to keep in mind? What are the key pros and cons of each model? This comparison should give some helpful hints!
In this overview, we are going to take a look at two different camera models that fall into different categories: the first model we are about to review, Sony Alpha a6400 is a camera from Semi-Pro Mirrorless category. It features CMOS sensor with a resolution of 24.0 MP. The second model we are looking at, Sony Alpha A7R III, falls into a Pro Mirrorless category and it is equipped with BSI-CMOS sensor that has a resolution of 42.0 MP.
Now, before we can move on to our comparison, let's take a moment to look at the key characteristics of Sony Alpha a6400 and Sony Alpha A7R III.
Sony Alpha a6400 Key Features:
Sony Alpha A7R III Key Features:
|Continuous Shooting||11 fps vs 10 fps||1 fps faster|
|Built-In Flash||Yes vs No||All the lenses are stabilized|
|Flash Range||6 vs No||6 better flash range|
|Weight||403 g vs 657 g||254 g lighter|
|Timelapse Recording||No vs Yes||Creative shooting|
|Storage Slots||2 vs 1||Extra storage slot|
|Sensor Resolution||42.0 MP vs 24.0 MP||42.9% more pixels|
|Sensor Area||861.6 mm2 vs 366.6 mm2||57.5% larger pixel area|
|Image Stabilization||Yes vs No||All lenses are stabilized|
|Max Shutter Speed||1/8000 vs 1/4000||Faster shutter speed|
|Screen Resolution||1,440k dots vs 922k dots||36% higher resolution screen|
|Battery Life||650 shots vs 410 shots||240 more frames with a single charge|
|Headphone Port||Yes vs No||Has headphone port|
|Dxo Color Depth||26 vs 24||Better color depth|
|Dxo Dynamic Range||14.7 vs 13.6||Better dynamic range|
|Dxo Low Light Iso||3523 vs 1431||Better High ISO performance|
|Viewfinder Resolution||3,686k dots vs 2,359k dots||36% higher resolution|
|Viewfinder Magnification||0.78 vs 0.7||0.08 better magnification|
|Touch Screen||Yes | Yes||Easy control of camera functions|
|Screen Size||3″ | 3″||Large display|
|Screen Type||Tilting | Tilting||Help viewing and changing settings easily|
|Viewfinder||Electronic | Electronic||Better framing and control|
|Raw Support||Yes | Yes||Better image quality|
|Sensor Resolution||24.0 MP | 42.0 MP||Bigger prints and more details|
|AutoFocus Face Detection||Yes | Yes||Very handy for portraits|
|Microphone Port||Yes | Yes||High quality audio recording option|
|Bracketing||Yes | Yes||Useful for tough lighting conditions and HDR|
|Continuous Shooting||11.0 fps | 10.0 fps||Nice continuous shooting|
|Flash Sync Port||Yes | Yes||Port for Flash Sync|
|Environmental Sealing||Yes | Yes||Shoot at tough conditions|
Before heading straight to the technical characteristics of each model, let’s start with comparing their physical specs. Let’s start with looking at the physical difference of the two products. Below are images that clearly show the sizes of Sony Alpha a6400 and Sony Alpha A7R III from the front view.
Now, let’s go on and see how the reviewed models are different or similar by the top view.
After looking at these images, you should get a clear idea of each model’s dimensions and how they are different from each other. However, we are not going to stop there. The next characteristic worth looking at is the weight. Of course, not every photographer is concerned about the weight, for example, it wouldn't be a decisive point for those who shoot in a studio. However, it is still an important factor because if you happen to go on a long photo session or just love having the camera with you wherever you go, you want to be sure that the chosen model isn't too heavy.
Speaking of weight, Sony Alpha a6400 is a lighter option of these two, as it weights 254g less than the Sony Alpha A7R III. This difference, in fact, can become a significant disadvantage for the photographers, who prefer to have their cameras with them wherever they go.
Sensor is, without a doubt, the most significant element of every digital camera. Its type, size, and resolution are the factors that define the quality of future shots. Thus, it is barely possible to pick a suitable camera without looking at these specs.
Are Sony Alpha a6400 and Sony Alpha A7R III any different in terms of sensor type?
In fact, that's exactly what makes these two models really different. Thus, it is a good point to consider if your are choosing between these two cameras. Sony Alpha a6400 features a 24.0 MP APS-C sized CMOS sensor and boasts of a Bionz X processor . Sony Alpha A7R III, in its turn, comes with a 42.0 MP Full frame sized BSI-CMOS sensor and Bionz X processor , which makes it significantly different from the first model.
Take a look below to find the comparison of Sony Alpha a6400 and Sony Alpha A7R III by the size of their sensors.
One more distinctive feature of compared models is the sensor size. Sony Alpha A7R III is equipped with a sensor that is 0.4x larger than the one featured in Sony Alpha a6400. Compared to the cameras with smaller sensor area, the ones with larger sensors ensure more control on the blurry background and depth of field if you shoot in the same aperture and focal length. Thus, the first model has a significant advantage here.
If you are interested in photography or has made a career in this field, you should know that different types of shooting actually require different camera characteristics. While one model can produce outstanding portraits, at the same time, it can be terrible for shooting landscapes, and so on. Thus, before you purchase a specific camera, it is vital to decide, which type of shooting you do most often and consider an option that suits it the most.
This section of our comparison is devoted to the performance of Sony Alpha a6400 and Sony Alpha A7R III in different fields of photography. Here we are going to look at the five main areas and evaluate how well each of the reviewed models performs in them. This will help you choose an option that suits your needs the most depending on your interest in one or several of these fields.
|Photography Type||Sony Alpha a6400||Sony Alpha A7R III|
Disadvantages:No Significant Disadvantages
Disadvantages:No Significant Disadvantages
Disadvantages:No Significant Disadvantages
Hopefully, our detailed overview of these models has helped you consider all the main specs, pros and cons of each cameras. Maybe, after reading this comparison, some of you have already decided which option to opt for depending on your needs and preferences. However, if you are still wondering which option is a better choice, Sony Alpha a6400 or Sony Alpha A7R III, below you can see what scores each of them received in five different aspects. To wrap up, we have used our unique Decision Algorithm that assesses different camera models upon 63 different factors including their price, and, if possible, DxO Mark scores. This algorithm allows us to make our verdict more consistent and objective.
What is our final verdict? Based on our comparison and the final scores of Sony Alpha a6400 and Sony Alpha A7R III here is what we can say in conclusion:
According all the factors that we considered in the process of comparing these two cameras, Sony Alpha A7R III deserves a higher Total Score than the Sony Alpha a6400. Thus, if you are choosing between these options, we would recommend you to choose the first model over the other one.
For better understanding of each model’s technical characteristics, find the detailed comparison below:
|Sony Alpha a6400||Sony Alpha A7R III|
|Model||Alpha a6400||Alpha A7R III|
|Announced||Jan 15, 2019||Oct 25, 2017|
|Body Type||Rangefinder-style mirrorless||SLR-style mirrorless|
|Sensor Size||APS-C||Full frame|
|Sensor Dimensions||23.5 x 15.6 mm||35.9 x 24 mm|
|Sensor Area||366.60 mm2||861.60 mm2|
|Sensor Resolution||24.0 MP||42.0 MP|
|Max Image Resolution||6000 x 4000||7952 x 5304|
|Max Native ISO||32,000||32,000|
|Max Boosted ISO||102,800||102,400|
|Min Native ISO||100||100|
|Lens Mount||Sony E||Sony E|
|Number of Lenses||102||83|
|Focal Length Multiplier||1.5x||1x|
|Macro Focus Range|
|AF Multi Area|
|AF Live View|
|AF Face Detection|
|AF Contrast Detection|
|AF Phase Detection|
|Number of Focus Points||425||425|
|Number of Cross Focus Points||n/a||n/a|
|Screen Resolution||922k dots||1,440k dots|
|ViewFinder Resolution||2,359k dots||3,686k dots|
|Min Shutter Speed||30 s||30 s|
|Max Shutter Speed||1/4000 s||1/8000 s|
|Continuous Shooting||11.0 fps||10.0 fps|
|Manual Exposure Mode|
|Custom White Balance|
|Flash Modes||auto, slow sync, rear sync, redeye reduction, wireless, hi-speed sync||Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync|
|DxO Sensor Scores|
|DxO Sensor Score||83||100|
|DxO Color Depth||24.0||26.0|
|DxO Dynamic Range||13.6||14.7|
|DxO Low Light ISO||1431||3523|
|Video Resolutions||3840 x 2160 @ 30p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM||3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)|
|Max Video Resolution||3840 x 2160||3840 x 2160|
|Video Formats||MPEG-4, H.264||MPEG-4, AVCHD, XAVC S|
|USB||USB 2.0||USB USB 3.1 Gen 1(5 GBit/sec)|
|Weight||403 g||657 g|
|Physical Dimensions||120 x 67 x 60 mm||127 x 96 x 74 mm|
|Battery Life||410 shots||650 shots|
|Battery Type||Battery Pack||Battery Pack|
|Storage Type||SD/SDHC/SDXC/Memory Stick DUO (UHS-I compliant)||Two SD/SDHC/SDXC slots (UHS-II support on one)|