It also is one of the most versatile of lenses and has quick auto focus and is plenty sharp for 95% of all your shooting needs. Lastly, the A7iii comes with superior low light performance due to its backlit full frame sensor, superior BIONZ X processor, and LSI chipset. It is capable of a much higher ISO range of 100-51200, vs. the A7ii's 100
The A7 III has two SD card slots, with the first one offering UHS-II compatibility, whereas the A7 II only has one UHS-I slot. Concerning connections, the A7 III has a faster USB 3 port (type C). Wireless capabilities include NFC and Wifi, but the new camera also gets Bluetooth to geotag your images.
Sensor. The main difference between these two cameras is the sensor. The A7 has 24.3 megapixels and a low pass filter, whereas the A7R has 36.4MP and no AA filter. The ISO specifications are the same for both products. The normal range goes from ISO 100 to ISO 6400, while the extended range starts at ISO 50 and goes up to ISO 25600.

Well, the new Sony A7 IV does, and by a country mile. It's better in just about every respect compared to the A7 III – see our Sony A7 IV vs A7 III comparison for the full run-down. Sony Alpha A7 III (Black) at Amazon for $1,498; But all this extra power comes with an extra cost.

Here, the two cameras are practically identical, except that the Sony a9 II has a longer recording limit of 780 minutes. If you don’t need that feature (and many photographers won’t), the Sony a7 III does just as good of a job for less than half the price! Other areas, of course, do favor the Sony a9 II pretty strongly.
The phase detection points cover a smaller area of the sensor. A7 II: 117 phase detection points. A7 II: 25 contrast detection points. The EOS RP has better low light sensitivity with a minimum rating of -5Ev with an f1.2 lens (-3.5Ev at f2) whereas the Sony works down to -1Ev with an f2 lens.
The benefits of the improved AF in a7iii would be wasted at the moment, and the used A7ii/Rii would be about 50% cheaper than the a7iii new. However, the battery life in mark ii's are pretty bad, and the a7iii would be more future proof if I decide to get some modern AF lenses. And I'm not sure if the A7rii resolution would be wasted on vintage
3:2. ISO latitude. 50 - 51200. Shutter type. Electronic. Fastest - Slowest speed (s) 1/8000 - 30.0. Frame rate (fps) 5.0.

Sony a6700 Used Prices. 1The Sony a7 II’s official dimensions do not include the depth of the protruding viewfinder. To match typical standards today, 10mm were added to the a7 II’s depth measurement in this table. 2The Sony a6700’s depth measurement in this table excludes the optional rubber cap for the viewfinder.

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