Sony a77 vs Nikon Z9

This is a full comparison between the cameras Sony a77 and Nikon Z9. We compare them by looking at the categories you see below.

Manufacturing

Sony a77 is manufacturered by Sony but Nikon Z9 is from Nikon. Both Sony and Nikon are well known brands though.

Sony a77 were released 2011 and Nikon Z9 was released 2021. That is a 10 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Sony a77 2011
Nikon Z9 2021

Type of camera

Sensors / crop factor

These cameras have different sensors. Sony a77 has a "Sony APS-C"-sensor while Nikon Z9 has a "Nikon FX"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

Camera Focal length, 50mm f/1.8 **
Sony a77 75 mm
Sony APS-C sensor
Crop factor/focal length multiplier by * 1.5
Nikon Z9 50 mm
Full-frame sensor
No crop factor/focal length multiplier

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Sony)
Camera selection can affect the focal length (Nikon)

Resolution

Sony a77 has a 24 MP (Megapixels) resolution while Nikon Z9 has 46 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Sony a77 24 MP
24000000 pixels
6000 x 4000
Nikon Z9 46 MP
45441024 pixels
8256 x 5504

Nikon Z9 has a 89 % larger resolution than Sony a77. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Nikon Z9 has a larger ISO-range than Sony a77. Nikon Z9 has an ISO range that stretches from 32 to 102400 while Sony a77 has 100 to 16000.

Camera ISO Range
Sony a77 100-16000
Nikon Z9 32-102400

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Sony a77
Lens compatibility chart for Nikon Z9

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a77 can shoot up to 12 pictures per seconds and Nikon Z9 can shoot up to 30 pictures per seconds.

Camera FPS (Frames per second)
Sony a77 12
Nikon Z9 30

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

In this case, both Sony a77 and Nikon Z9 can shoot movies.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Nikon Z9 weighs 1340 gr (equal to 2.95 lb) which is 83% heavier than Sony a77 and its 732 gr (or 1.61 lb).

Camera Weight
Sony a77 732 gr
1.61 lb
Nikon Z9 1340 gr
2.95 lb

Sony a77 vs Nikon Z9 Specs

Below you will find the complete and detailed technical specs for both Sony a77 and Nikon Z9, next to each other. Each category of data is a link to an article covering the subject, giving you a deeper understanding so you can better understand the strengths and weaknesses of the two camera models.

Product
Sony a77
Nikon Z9
Name Sony a77 Nikon Z9
Manufacturer Sony Nikon
Release Date and Price
Sony a77
Nikon Z9
Release Year 2011 2021
Release Date 2011-08-24 2021-10-28
MSRP 1399 USD 5500 USD
Buy it today
Camera Type
Sony a77
Nikon Z9
Camera Type SLT Mirrorless
Sensor
Sony a77
Nikon Z9
Sensor Size APS-C (approx 23.5 x 15.6 mm) Full Frame (approx 36 x 23.9 mm)
Also known as "FX"
Sensor Type CMOS Full Stacked CMOS
Resolution 6000 x 4000 pixels 8256 x 5504 pixels
Megapixels 24 MP 46 MP
Image Processor Bionz EXPEED 7
Image
Sony a77
Nikon Z9
ISO Range 100 - 16000 32 - 102400
White Balance Presets 8 9
Custom White Balance Yes Yes
Image Stabilization Yes
(Sensor-Shift)
Yes
(Sensor Shift (Synchro VR with selected lenses))
Image Stabilization CIPA Rating 0 stops 6 stops
Uncompressed format RAW RAW
Optics & Focus
Sony a77
Nikon Z9
Autofocus Motor Yes Yes
Autofocus Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Face Detection
LiveView
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Focus Points 19 493
Lens Mount Sony A

See Compatible Lenses
Nikon Z

See Compatible Lenses
Focal Length Multiplier APS-C Sensor (1.5x)
1.5x multiplier
Example:
24 mm becomes 36 mm
50 mm becomes 75 mm
100 mm becomes 150 mm
200 mm becomes 300 mm
FX (Full frame)
No multiplier
Example:
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
Screen & Viewfinder
Sony a77
Nikon Z9
Articulated LCD Fully articulated Tilting
Screen size 3” 3.2”
Screen dots 921000 2088960
Touch screen No Yes
Screen type N/A TFT LCD
Live view Yes Yes
Viewfinder Type Electronic Electronic
Viewfinder Coverage 100% 100%
Viewfinder Magnification 1.1× (0.73× 35mm equiv.) 0.8x
Viewfinder Resolution N/A 3686400
Photography features
Sony a77
Nikon Z9
Frames per second 12 fps 30 fps
Minimum Shutter Speed 30 seconds 900 seconds
Maximum Shutter Speed 1/8000 seconds 1/32000 seconds
Built-in Flash Yes No
Built-in Flash Range 12 meters N/A
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse No Yes
Metering modes Multi
Center Weighted
Spot
Multi
Center Weighted
Highlight Weighted
Spot
Exposure Compensation +/- 5 (at 1/3 EV, 1/2 EV steps) +/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features
Sony a77
Nikon Z9
Video recording Yes Yes
Video format MPEG4
H.264
AVCHD
H.264
H.265
Video resolution 1440 x 1080
1920 x 1080
1920 x 1080
3840 x 2160
7680 x 4320
Built-in Microphone Yes Yes
Built-in Speakers Yes Yes
Storage
Sony a77
Nikon Z9
Memory Card Memory Stick Pro Duo
SD/SDHC
Compact Flash Express
XQD
Connectivity
Sony a77
Nikon Z9
HDMI Output Yes Yes
Microphone Port No Yes
Headphone Port No Yes
Wireless Yes
Eye-Fi Connected
Yes
Built-in (IEEE 802.11b/g/n/a/ac/Wi-Fi, Bluetooth Low Energy)
Remote Control Yes (Optional) Yes (Via app)
GPS Yes
Built-in
Yes
Built-in (GPS, GLONASS, QZSS)
Body & Dimensions
Sony a77
Nikon Z9
Enviromentally sealed Yes Yes
Battery Battery Pack Battery Pack
Battery Details Rechargeable NP-FM500H battery & charger
EN-EL18d (backwards compatible with EN-EL18/a/b/c batteries)
Battery Life (CIPA) 470 shots 740 shots
Width 143 mm 149 mm
Height 104 mm 150 mm
Depth 81 mm 91 mm
Weight 732 gram 1340 gram