Benchmarks Real world tests of Alpha a7 III vs Nikon D810

Continuous shooting Delay between fully pressing shutter to image capture

Alpha a7 III
10 fps
Nikon D810
5 fps

Battery life How many photos per battery charge (CIPA)

Alpha a7 III
710 photos
Nikon D810
1,200 photos

Features Key features of the Alpha a7 III  vs Nikon D810 

Megapixels Maximum resolution images are captured at

Alpha a7 III
24 MP
Nikon D810
36.2 MP

Max ISO Maximum light sensitivity of the sensor

Alpha a7 III
51,200 ISO
Nikon D810
51,200 ISO

Focus points How many different points the camera can focus on

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

Viewfinder size Large viewfinders are brighter and more comfortable to use

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

Alpha a7 III
35.5 microns
Nikon D810
23.8 microns

Specifications Full list of technical specs


Alpha a7 III  vs
Nikon D810 
Megapixels 24 MP 36.2 MP
Resolution 6000 x 4000 7360 x 4912
Size Full frame Full frame
Area 35.8 x 23.8 mm 35.9 x 24 mm
Crop factor 1.0x 1.0x
Pixel size 35.5 microns 23.8 microns
Light sensitivity 100 ISO to 51,200 ISO 64 ISO to 12,800 ISO

focus system

Type Phase detection Phase detection
Focus points 693 51
Supports continuous Yes Yes


Viewfinder mirror None Opaque
Viewfinder Yes Yes
Type Electronic Pentaprism
Coverage 100% 100%
Magnification 0.78x 0.7x
Viewfinder size 0.78x 0.7x


Max continuous shooting 10 fps 5 fps
Battery life 710 1,200
Continuous shooting
10 fps
5 fps


Alpha a7 III  vs
Nikon D810 
Video 3840 x 2160 @ 30 fps 1920 x 1080 @ 60 fps
Shoots video in 24p Yes Yes
Shoots high speed video Yes No
External mic jack 3.5mm 3.5mm


Size 3" 3.2"
Resolution 921 k dots 1,229 k dots
Has a touch screen Yes No
Has a flip out screen Yes No
Supports live view Yes Yes


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

form factor

Size 127 x 96 x 74 mm 146 x 123 x 81.5 mm
Thickness 74 mm 81.5 mm
Weight 650 g 880 g
Is weather sealed Yes Yes


Includes a GPS No No
WiFi None None
Image stabilization
Sensor shift
Sony Alpha a7 III
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Nikon D810
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