Nikon D7100 vs Sony a580

This is a full comparison between the cameras Nikon D7100 and Sony a580. We compare them by looking at the categories you see below.

Manufacturing

Nikon D7100 is manufacturered by Nikon but Sony a580 is from Sony. Both Nikon and Sony are well known brands though.

Nikon D7100 were released 2013 and Sony a580 was released 2010. That is a 3 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Nikon D7100 2013
Sony a580 2010

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Nikon D7100 has a "Nikon DX"-sensor while Sony a580 has a "Sony APS-C"-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 **
Nikon D7100 75 mm
Nikon DX sensor
Crop factor/focal length multiplier by * 1.5
Sony a580 75 mm
Sony APS-C sensor
Crop factor/focal length multiplier by * 1.5

** 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 (Nikon)
Camera selection can affect the focal length (Sony)

Resolution

Nikon D7100 has a 24,1 MP (Megapixels) resolution while Sony a580 has 16 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Nikon D7100 24,1 MP
24000000 pixels
6000 x 4000
Sony a580 16 MP
16032768 pixels
4912 x 3264

Nikon D7100 has a 50 % larger resolution than Sony a580. 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

Sony a580 has a larger ISO-range than Nikon D7100. Sony a580 has an ISO range that stretches from 100 to 12800 while Nikon D7100 has 100 to 6400.

Camera ISO Range
Nikon D7100 100-6400
Sony a580 100-12800

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 Nikon D7100
Lens compatibility chart for Sony a580

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Nikon D7100 can shoot up to 6 pictures per seconds and Sony a580 can shoot up to 5 pictures per seconds.

Camera FPS (Frames per second)
Nikon D7100 6
Sony a580 5

Ability to record movies

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

In this case, both Nikon D7100 and Sony a580 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 D7100 weighs 675 gr (equal to 1.49 lb) which is 13% heavier than Sony a580 and its 599 gr (or 1.32 lb).

Camera Weight
Nikon D7100 675 gr
1.49 lb
Sony a580 599 gr
1.32 lb

Nikon D7100 vs Sony a580 Specs

Below you will find the complete and detailed technical specs for both Nikon D7100 and Sony a580, 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
Nikon D7100
Sony a580
Name Nikon D7100 Sony a580
Manufacturer Nikon Sony
Release Date and Price
Nikon D7100
Sony a580
Release Year 2013 2010
Release Date 2013-02-21 2010-08-24
MSRP 1199 USD 799 USD
Buy it today
Camera Type
Nikon D7100
Sony a580
Camera Type DSLR DSLR
Sensor
Nikon D7100
Sony a580
Sensor Size APS-C (approx 23.7 x 15.5 mm)
Also known as "DX"
APS-C (approx 23.5 x 15.6 mm)
Sensor Type CMOS CMOS
Resolution 6000 x 4000 pixels 4912 x 3264 pixels
Megapixels 24,1 MP 16 MP
Image Processor EXPEED 3 Bionz
Image
Nikon D7100
Sony a580
ISO Range 100 - 6400 100 - 12800
White Balance Presets 12 6
Custom White Balance Yes Yes
Image Stabilization No Yes
(Sensor-Shift)
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Nikon D7100
Sony a580
Autofocus Motor Yes Yes
Autofocus Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Face Detection
LiveView
Contract Detect (sensor)
Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Face Detection
LiveView
Focus Points 51 15
Lens Mount Nikon F

See Compatible Lenses
Sony A

See Compatible Lenses
Focal Length Multiplier DX / APS-C (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
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
Screen & Viewfinder
Nikon D7100
Sony a580
Articulated LCD Fixed Tilting
Screen size 3,2 3
Screen dots 1228800 921600
Touch screen No No
Screen type Wide Viewing Angle TFT-LCD monitor N/A
Live view Yes Yes
Viewfinder Type Optical (pentaprism) Optical (pentamirror)
Viewfinder Coverage 100% 95%
Viewfinder Magnification 0.94 0.8 (0.53 35mm equiv.)
Viewfinder Resolution N/A N/A
Photography features
Nikon D7100
Sony a580
Frames per second 6 fps 5 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/8000 seconds 1/4000 seconds
Built-in Flash Yes Yes
Built-in Flash Range 12 meters 12 meters
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes No
Metering modes Multi
Center Weighted
Spot
Average
Multi
Center Weighted
Spot
Exposure Compensation +/- 5 (at 1/3 EV, 1/2 EV steps) +/- 2 (at 1/3 EV steps)
Videography features
Nikon D7100
Sony a580
Video recording Yes Yes
Video format MPEG4
H.264
MPEG4
H.264
AVCHD
Video resolution 1280 x 720
1920 x 1080
1440 x 1080
1920 x 1080
Built-in Microphone Yes Yes
Built-in Speakers Yes No
Storage
Nikon D7100
Sony a580
Memory Card SD/SDHC
Memory Stick Pro Duo
SD/SDHC
Connectivity
Nikon D7100
Sony a580
HDMI Output Yes Yes
Microphone Port Yes No
Headphone Port Yes No
Wireless Yes
Wireless WR-1 and WR-R10
Yes
Eye-Fi Connected
Remote Control Yes (Optional, wired MC-DC2 or wireless WR-1 and WR-R10 )
Yes (Optional)
GPS Yes
Optional
No
Body & Dimensions
Nikon D7100
Sony a580
Enviromentally sealed Yes No
Battery Battery Pack Battery Pack
Battery Details Lithium-Ion EN-EL15 rechargeable battery & charger
Rechargeable NP-FM500H battery & charger
Battery Life (CIPA) 950 shots 1050 shots
Width 136 mm 137 mm
Height 107 mm 104 mm
Depth 76 mm 84 mm
Weight 675 gram 599 gram