Camera Rocket Review Our evaluation of A7S vs A7

Image Quality

RAW image quality independent of lens

Sony A7S
9.9
Sony A7
10.0
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range

Focusing

How fast and easily does the camera nail focus

Sony A7S
8.3
Sony A7
7.8
Focus lag and focus points

Responsiveness

How much delay is there between you and your photo?

Sony A7S
8.9
Sony A7
8.7
Focus lag, continuous shooting and Startup delay

Reviews

What do the experts think?

Sony A7S
n.d.
Sony A7
9.2
Reviews from sonyalpharumors.com, imaging-resource.com and dpreview.com

No winner declared

Too close to call

Benchmarks Real world tests of Sony A7S vs A7

Low light image quality Highest ISO setting that still achieves great image quality

Sony A7S
2,993 ISO
Sony A7
2,449 ISO

Focus lag Delay between fully pressing shutter to image capture

Sony A7S
178 ms
Sony A7
221 ms

Shutter lag Delay to take a photo when prefocused

Sony A7S
24 ms
Sony A7
53 ms

Startup delay Delay from power on to first photo

Sony A7S
2,000 ms
Sony A7
1,700 ms

Continuous shooting Delay between fully pressing shutter to image capture

Sony A7S
5 fps
Sony A7
5 fps

Battery life How many photos per battery charge (CIPA)

Sony A7S
320 photos
Sony A7
340 photos

Features Key features of the Sony A7S  vs A7 

Megapixels Maximum resolution images are captured at

Sony A7S
12.4 MP
Sony A7
24 MP

Focus points How many different points the camera can focus on

Sony A7
117

Screen size Larger screens make it easier to preview and review photos

Viewfinder size Large viewfinders are brighter and more comfortable to use

Sony A7S
0.71x
Sony A7
0.71x

Pixel size How much area of the sensor is dedicated to each pixel

Sony A7S
69.1 microns
Sony A7
35.7 microns

Specifications Full list of technical specs

sensor

Sony A7S  vs
A7 
Type Exmor R CMOS CMOS
Megapixels 12.4 MP 24 MP
Resolution 4064 x 3048 6000 x 4000
Size Full frame Full frame
Area 35.8 x 23.9 mm 35.8 x 23.9 mm
Crop factor 1.0x 1.0x
Pixel size 69.1 microns 35.7 microns
Light sensitivity 100 ISO to 409,600 ISO 100 ISO to 25,600 ISO
Light sensitivity (Boost) None 100 ISO to 25,600 ISO
Codecs
RAW
JPEG
Self cleaning sensor No Yes

focus system

Type Contrast detection Hybrid detection
Focus points 25 117
Supports continuous Yes Yes

viewfinder

Viewfinder mirror None None
Viewfinder Yes Yes
Type Electronic Electronic
Coverage 100% 100%
Magnification 0.71x 0.71x
Viewfinder size 0.71x 0.71x

performance

Max continuous shooting 5 fps 5 fps
Battery life 320 340
Continuous shooting
5 fps
Focus lag 178 ms 221 ms
Shutter lag 24 ms 53 ms
Startup delay 2,000 ms 1,700 ms

video

Sony A7S  vs
A7 
Video 1920 x 1080 @ 60 fps 1920 x 1080 @ 60 fps
Shoots video in 24p Yes Yes
Shoots high speed video No No
External mic jack 3.5mm 3.5mm
Autofocus while shooting video Manual Phase detection
Autofocus type N/A Phase detection
Autofocus supports continuous N/A Yes

display

Type LCD LCD
Size 3" 3"
Resolution 921 k dots 1,229 k dots
Has a touch screen No No
Has a flip out screen Yes Yes
Supports live view Yes Yes

shutter

Min 30 s 30 s
Max 1/8000 s 1/8000 s

form factor

Size 126.9 x 94.4 x 48.2 mm 127 x 94 x 48 mm
Thickness 48.2 mm 48 mm
Weight 489 g 417 g
Is weather sealed Yes Yes

features

Includes a GPS No No
Supports HDR Yes Yes
WiFi None 802.11
Automatic panorama Yes Yes
Create realistic 3D images No No
Image stabilization
Sony A7S
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Sony A7
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