Evaluation of Sony A7M3

Sony released full frame micro single A7M3 sets a new standard for full frame models. This time, the same 693 Phase Detection AF focusing system as the full frame micro single flagship A9 was used. And also Sony used the same new fuselage and control layout as the A7RM3. It is positioned as the entry level. But the whole performance has been comparable with many high-end models of the same type.

The Sony A7M3 is a near perfect camera. Compared with their previous products, it has better fuselage and performance. These can be said to be expected upgrades.

The camera is equipped with a 24.2 megapixel Exmor R CMOS back illuminated image sensor. Thanks to the new front-end LSI image sensor, the reading speed of the camera is also doubled. The improved BIONZ X image processor increases the image processing speed by 1.8 times. And achieve excellent image quality of A7M3. In addition, a wide dynamic range / tolerance of 15 levels can be achieved under the low sensitivity setting. Even in silent or continuous shooting mode, raw format of 14 Bit can be output. In the latest 5-axis anti shake mode, it can compensate up to 5 shutter speeds.

Autofocus performance has also made a qualitative leap in this generation of A7M3. The new 4D focusing system has 693 phase detection. And also 425 contrast detection focusing points. The coverage can be as high as 93%. In the weak light environment, the tracking focusing speed is twice as fast as A7M2. Eye control (eye) focusing supports AF-C mode. Also, it is suitable for Sony a bayonet lens transferred by LA-EA3 bayonet adapter.

In continuous shooting, it can achieve up to 10 shots per second under 24.2 million effective pixels. Accurate AF / AE can continuously track up to 177 JPEG, 89 compressed RAW or 40 uncompressed RAW photos. Both mechanical shutter and silent shutter can be used in continuous shooting mode. With high speed of 10 shots per second. In the real-time shooting mode, which the speed is 8 shots per second. The viewfinder or LCD screen will not appear obvious lag phenomenon.

For photographers who often use cameras to record videos, A7M3 has brought quite a surprise. It is equipped with professional 4K HDR video capture. This function can record 4K (QFHD: 3840 x 2160) video in full frame 35mm mode. By using full pixel reading method, we oversampling a large amount of source information. They are about 2.4 times of 4K resolution pixels and generating 4K video. So as to obtain better detail and depth. A7M3 also supports 4K HDR (HLG) video recording. Also, it plays more realistic 4K HDR images on Sony TV compatible with HDR (HLG). The built-in S-Log2 and S-Log3 of A7M3 can improve the tolerance and color matching space. It also supports 100 Mbps full focus video recording mode. It can be edited into 4x or 5x slow motion video files in later stage. For those who like photography, this micro sheet is a very good choice.