Camera Rocket Review Our evaluation of A7S vs DF

Image Quality

RAW image quality independent of lens

Sony A7S
9.9
Nikon DF
9.9
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range

Focusing

How fast and easily does the camera nail focus

Sony A7S
7.6
Nikon DF
6.8
Focus lag and focus points

Responsiveness

How much delay is there between you and your photo?

Sony A7S
8.3
Nikon DF
8.2
Focus lag, continuous shooting and Startup delay

Reviews

What do the experts think?

Sony A7S
n.d.
Nikon DF
9.1
Reviews from sonyalpharumors.com, imaging-resource.com and dpreview.com

Camera Rocket Score

Image Quality, Focusing, Responsiveness and Reviews

Sony A7S
9.0
Nikon DF
8.8

Winner
Sony A7S 

Camera Rocket recommends the Sony A7S  based on its focusing and responsiveness.

See full details

Benchmarks Real world tests of Sony A7S vs Nikon DF

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

Sony A7S
2,993 ISO
Nikon DF
3,279 ISO

Focus lag Delay between fully pressing shutter to image capture

Sony A7S
178 ms
Nikon DF
274 ms

Shutter lag Delay to take a photo when prefocused

Sony A7S
24 ms
Nikon DF
54 ms

Startup delay Delay from power on to first photo

Sony A7S
2,000 ms
Nikon DF
550 ms

Continuous shooting Delay between fully pressing shutter to image capture

Sony A7S
5 fps
Nikon DF
5.5 fps

Battery life How many photos per battery charge (CIPA)

Sony A7S
320 photos
Nikon DF
1,400 photos

Features Key features of the Sony A7S  vs Nikon DF 

Megapixels Maximum resolution images are captured at

Sony A7S
12.4 MP
Nikon DF
16.2 MP

Focus points How many different points the camera can focus on

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

Nikon DF
3.2"

Viewfinder size Large viewfinders are brighter and more comfortable to use

Sony A7S
0.71x
Nikon DF
0.7x

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

Sony A7S
69.1 microns
Nikon DF
53.1 microns

Specifications Full list of technical specs

sensor

Sony A7S  vs
Nikon DF 
Type Exmor R CMOS CMOS
Megapixels 12.4 MP 16.2 MP
Resolution 4064 x 3048 4648 x 3488
Size Full frame Full frame
Area 35.8 x 23.9 mm 36 x 23.9 mm
Crop factor 1.0x 1.0x
Pixel size 69.1 microns 53.1 microns
Light sensitivity 100 ISO to 409,600 ISO 100 ISO to 12,800 ISO
Light sensitivity (Boost) None 50 ISO to 204,800 ISO
Codecs
RAW
JPEG
Self cleaning sensor No Yes

focus system

Type Contrast detection Phase detection
Focus points 25 39
Supports continuous Yes Yes

viewfinder

Viewfinder mirror None Opaque
Viewfinder Yes Yes
Type Electronic Pentaprism
Coverage 100% 100%
Magnification 0.71x 0.7x
Viewfinder size 0.71x 0.7x

performance

Max continuous shooting 5 fps 5.5 fps
Battery life 320 1,400
Continuous shooting
5.5 fps
5 fps
Focus lag 178 ms 274 ms
Shutter lag 24 ms 54 ms
Startup delay 2,000 ms 550 ms

video

Sony A7S  vs
Nikon DF 
Video 1920 x 1080 @ 60 fps None
Shoots video in 24p Yes N/A
Shoots high speed video No N/A
External mic jack 3.5mm N/A
Autofocus while shooting video Manual N/A
Autofocus type N/A N/A
Autofocus supports continuous N/A N/A

display

Type LCD LCD
Size 3" 3.2"
Resolution 921 k dots 921 k dots
Has a touch screen No No
Has a flip out screen Yes No
Supports live view Yes Yes

shutter

Min 30 s 30 s
Max 1/8000 s 1/4000 s

form factor

Size 126.9 x 94.4 x 48.2 mm 143.5 x 110 x 66.5 mm
Thickness 48.2 mm 66.5 mm
Weight 489 g 765 g
Is weather sealed Yes Yes

features

Includes a GPS No No
Supports HDR Yes Yes
WiFi None Yes
Automatic panorama Yes No
Create realistic 3D images No No
Image stabilization
Sony A7S
Report a correction
Nikon DF
Report a correction

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