What’s the difference between the Sony A7S III and Sony A7S II?

What’s the difference between the Sony A7S III and Sony A7S II?

The Sony Alpha 7S series is a video camera rather than a photo camera. This camera is not suitable for photography as it has 10 million picture pixels. The reason for the low number of effective pixels is to reduce the number of pixels in order to shoot brightly in low light, that is, in low light or low light conditions. The latest product in this Sony A7S series, the Sony A7S III, was recently unveiled. So what’s different from the Sony A7S II?

What’s the difference between the Sony A7S III and Sony A7S II?
Sony Alpha 7S III

The biggest change is the rear 3-inch swivel LCD. Free Angle’s swivel LCD, which is the identity of Canon, finally came to Sony. The swivel LCD is inferior to the tilt LCD, but the LCD can be turned to the front instead, so it can be used as a monitor for selfies, solo broadcasts, or self-videos. Also, the top design has changed. Let’s look specifically

The size and weight of the A7S III is higher than that of the Sony A7S II.

The size and weight have rather increased. The Sony A7S II was 127 x 96 x 10mm and weighed 627g, while the Sony A7S III increased to 129 x 97 x 81mm at 699g. 

The top design has also changed a bit. The Sony A7S II has a recessed rear wheel dial, while the A7S III has an exposed rear wheel dial. You will also see an exposure lock button. The record button is also on the top. The nice thing about this seat is that it’s right behind the shutter button, so it’s convenient to record quickly. 

The rear is also different. A multi-controller like a joystick entered the Sony A7S III. Above all, the change from tilt LCD to swivel LCD is the biggest change. 

Sony A7S III vs Sony A7S II image sensor

Both mirrorless cameras use full-frame image sensors. The same number of pixels is 12 million pixels. What’s different is that Sony Alpha 7S III uses a back-illuminated image sensor, a more advanced image sensor. The back-illuminated type has a better light-receiving rate than conventional sensors by turning the wiring behind the photodiode. This back-illuminated image sensor, called the BSI sensor, further improves ISO performance, reduces the rolling shutter effect, and provides data transfer. 

Sony A7S III vs Sony A7S II ISO

Sony A7S II: ISO 100~102,400, Extended ISO 50~409,600 
Sony A7S III: ISO 80~102,400, Extended ISO 40~409,600

The ISO number didn’t change much more than I thought. The maximum sensitivity is the same, and the default ISO is slightly lower from ISO 100 to ISO 80. However, in S-Log3, the default ISO 1600 went down to 640. 

Sony A7S III vs Sony A7S II video resolution and bit rate

Sony A7S II  : 4K UHD up to 30 / 25p, FHD up to 120p, / Internal 8 bit 4: 2: 0, External 8 bit 4: 2: 2 
Sony A7S III  : 4K UHD up to 120 / 100p, FHD up to 240p / Internal 10 Bits 4:2:2, external 16bit raw 

The video resolution itself does not change much. It has supported 4K before, and subsequent products support 4K as well. You seem to think 8K is premature. What’s different is that super-fast video recording is possible, so the slow motion recording function has been increased. You can record 120p in 4K and 240p in FHD. 

The video bit rate and bit rate have improved a bit. The A7S II provides a maximum bit rate of 100 Mbps, while the A7S Mark III provides up to 600 Mbps. 

Sony A7S III vs Sony A7S II Electronic Viewfinder (EVF)

Sony A7S II   :  XGA OLED, 0.78x magnification
Sony A7S III   :  QXGA OLED, 0.9x magnification

One of the biggest drawbacks of mirrorless is the electronic viewfinder called EVF, unlike the optical viewfinder called OVF. There are a lot of good things about the electronic viewfinder, but no matter how good the technology is, the screen delay and the sense of heterogeneity are the biggest drawbacks. The Sony A7S III offers better resolution than its predecessor. 

Sony A7S III vs Sony A7S II Electronic Viewfinder (EVF) 

Sony A7S II  : 169-point contrast AF
Sony A7S III  : 759-point phase detection AF, 425-point contrast AF

The AF point has increased dramatically. The Sony A7S II used 169 points, all of which were contrast AF. On the other hand, the Sony A7S III has expanded to 759 phase difference AF and 425 contrast AF. This is also the power of the BIONZ XR image processor. The rear LCD has been changed from a tilt LCD to a swivel LCD. 

The AF switching speed is also faster. When shooting movies, having a fast AF switching speed can be bad. If you look at the numerous images we see, the AF does not change. Rather, it is difficult for the eyes to adapt if they change too quickly. So it smoothly changes the AF area. However, this AF speed can be controlled, and there are many fast subject shooting these days, so I need a technology to quickly switch AF, but the Sony Alpha 7S III provides outstanding AF speed. 

Sony A7S III vs Sony A7S II memory card slot

Sony A7S II  : 1x SDXC (UHS-I)
Sony A7S III  : 2x SDXC (UHS-II) / CFexpress Type-A

The memory card slot has also changed. The Sony A7S III is a dual slot that offers two. In addition, SDXC UHS-II and CFexpress Type-A memory card slots with fast transfer rates are provided to store 4K 120p. 

Sony A7S III vs Sony A7S II battery life 

Sony A7S III : 370 photos / 60 minutes video recording (LCD)
Sony A7S III  : 600 photos / 95 minutes video recording (LCD)

The battery is 60% better than its predecessor. In addition, it provides USB-C type, so you can charge it by connecting a PD. As it can be charged with an external battery, it is convenient to charge outdoors. 

The Sony Alpha 7S III, the successor to the Sony Alpha 7S II, released in 5 years, is a video camera with significantly improved performance in all respects. 

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