Sony a7S Sony a7S II

Is the upgrade worth it? Every change on the spec sheet, and an honest read on who should bother.

Sony a7S
Sony a7S
Sony a7S II
Sony a7S II

The bottom line

The Sony a7S II is the direct successor to your Sony a7S, released 1 year later. Across the full spec sheet it improves 5 items and steps back on 2. The changes that matter most: 10-bit internal recording is added. The Sony a7S II lists at $2,999 (the Sony a7S launched at $2,799, and older bodies typically sell for well under launch price on the used market). The generation gap here is modest — upgrade only if a specific change below solves a real problem in your shooting.

Upgrade to the Sony a7S II if…

  • You shoot video seriously — it brings 10-bit internal colour.

Stick with the Sony a7S if…

  • None of the headline changes map to what you actually shoot — the camera you own doesn't get worse when a successor launches.

What changed (10 items)

5 improved · 2 stepped back · → changed without a clear better/worse

SpecSony a7SSony a7S II
Video Capture
10-bit InternalNoYes
Log ProfilesS-Log2S-Log2 / S-Log3 / HLG
Viewfinder
EVF Magnification0.71x0.78x
Monitor
Touch ScreenNoYes
Interface
Bluetoothv4.0v4.2
General
Price (MSRP)$2,799$2,999
Dimensions126.9×94.4×48.2 mm126.9×95.7×60.3 mm
Weight566g (1.25 lb)584g (1.29 lb)
Battery Life (EVF)240 shots310 shots
Battery Life (LCD)310 shots370 shots

What stayed the same (36 items)

Everything below is identical on both bodies — if these are what you buy a camera for, the Sony a7S already has them.

Sensor Type: CMOSSensor Size: Full-FrameImage Processor: BIONZ XEffective Resolution: 12.2 MPLens Mount: Sony EISO Range (Native): 100 – 102400ISO Range (Extended): 50 – 409600Mechanical Shutter: 1/8000Electronic Shutter: 1/8000Flash Sync Speed: 1/250Built-in Flash: NoContinuous Shooting: 5 fpsMax Resolution: 4K4K Recording: Up to 30p1080p Recording: Up to 120pRecording Limit: 29 minBuilt-in Mic: StereoHeadphone Jack: YesMic Input: YesHDMI Output: Micro (Type D)Eye AF: NoAnimal AF: NoVehicle AF: NoEVF Type: OLEDEVF Resolution: 2.36M dotsLCD Size: 3"LCD Resolution: 1.23M dotsLCD Type: TiltingWi-Fi: Wi-Fi 5USB: Micro USB 2.0Memory Card Slots: 1x SD UHS-IGPS: NoBody Material: Magnesium AlloyWeather Sealed: NoIn-Body Stabilization: YesBattery Type: NP-FW50

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Sony a7S (keep or buy used)

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Sony a7S II

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Frequently asked

Is it worth upgrading from the Sony a7S to the Sony a7S II?

The Sony a7S II is the direct successor to your Sony a7S, released 1 year later. Across the full spec sheet it improves 5 items and steps back on 2. The changes that matter most: 10-bit internal recording is added. The Sony a7S II lists at $2,999 (the Sony a7S launched at $2,799, and older bodies typically sell for well under launch price on the used market). The generation gap here is modest — upgrade only if a specific change below solves a real problem in your shooting.

What are the biggest improvements of the Sony a7S II over the Sony a7S?

Across the spec sheet the Sony a7S II improves 5 items. The most significant: it brings 10-bit internal colour.

What does the Sony a7S still do just as well as the Sony a7S II?

36 spec items are identical between the two, including sensor type (CMOS), sensor size (Full-Frame), image processor (BIONZ X), effective resolution (12.2 MP), lens mount (Sony E), iso range (native) (100 – 102400). If those cover your needs, the older body remains fully capable.

Does the Sony a7S II give anything up compared to the Sony a7S?

Yes — 2 items on the spec sheet move the other way: price (msrp) ($2,799 → $2,999), weight (566g (1.25 lb) → 584g (1.29 lb)).

Full side-by-side spec table →Sony a7S II full specs →