Sony's Alpha A7s Mark II is a full-frame mirrorless camera that's optimized for 4k video, particularly in very low light. Sony's essentially taken the 12 Megapixel sensor of the original A7s Mark I and slotted it into the body of the A7r Mark II.

Great quality 4k video; Clean up to 6400 ISO and still good at 25600 ISO, Capable of shooting in extremely low light at up to 409600 ISO, Very good 1080p options including APSC crop and 120p slow motion, S-Log 2 and 3 for subsequent grading.

Contrast-based AF not great at tracking moving subjects; No APSC / Super-35 crop option for 4k video; Built-in IS only provided one or two stops in my tests; Small dials and buttons.

The Sony Alpha A7S II is a full-frame camera with a difference. Where its brother the A7R II uses a 42-megapixel sensor for massive amounts of detail, this camera pares the resolution all the way down to 12 megapixels to radically improve low-light performance.

Great low-light performance; Excellent for video; Much-improved ergonomics

Limited detail capture among full-frame cameras; Unimpressive burst performance

Sony's A7S II is the ultimate low-light shooter for night owls.

Excellent 12.2MP full-frame stills; Top-notch 4K; 120-fps Full HD videos; Whopping 409,600 ISO; 14-bit compressed/uncompressed RAW

Very noisy at high ISOs; Not ideal for action; Expensive

After the introduction of the Sony Alpha 7 II and Sony Alpha 7R II it was only a matter of time before Sony introduced the update to the Alpha 7S, its 12Mp, low light and video-centric model which has become popular in the film and television industry.

The Sony A7S II is a new 35mm full-frame compact system camera with a 12.2 megapixel sensor that provides an incredible ISO range of 50-409,600 and high dynamic range. Other standout highlights of the A7S II include internal 4K video recording with full pixel readout without pixel binning in...

The Sony A7S II takes the A7S to the next level. The redesigned camera body, improved autofocus, and bevy of new features make the A7S II a very capable full-frame mirrorless camera no matter the lighting conditions.

Comfortable and surprisingly compact camera body; Improved low light performance; Built-in image stabilization; Wide range of usable ISOs; More sophisticated autofocus performance; Excellent video capabilities

Relatively low resolution; Mediocre continuous shooting performance; No built-in flash; No losslessly compressed RAW option

Sony continues to take a three-camera approach with its second-generation full-frame mirrorless system. At one end of the spectrum sits the high-resolution, 42-megapixel Alpha 7R II , and at the other is the 12-megapixel Alpha 7S II ($2999.99, body only).

Full-frame 4K video recording; Incredible high ISO image quality; 5fps burst shooting; In-body image stabilization; Hinged rear display; Sharp EVF; Dust- and moisture-resistant design

Expensive; 12-megapixel resolution can be limiting; Omits PC sync socket; Overly sensitive eye sensor; No built-in flash

When Sony launched the Alpha 7 and Alpha 7R two years ago, the manufacturer was looking to target two different types of photographer. While the Alpha 7 was out to appeal to enthusiasts looking for a full-frame camera with an ‘all-round' level of performance, the Alpha 7R was aimed at landscape and...

I don't know that a more capable videography/photography device exists in this size. The a7S is back with everything the first generation was missing (I had one). This is the ultimate low-light shooter for video and photography.

Now with Internal 4K; LUTs and IBIS! Low light monster Gorgeous video and photo Small and light package Adapt lenses from almost any system ever

Internal recording codec could be better Menus still mostly suck Limited system lenses 12MP limits post-processing options

Really the only choice for poor/low light Video or shooting stills in the dark. Very clean at ISO 6400+ New 1080P120 is exceptionally even with internal codec. Very smooth and detailed. It can keep up with most action. Also good for slow motion that I do not use.