Nikon D7100 vs Nikon D90

This is a full comparison between the cameras Nikon D7100 and Nikon D90. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Nikon.

Nikon D7100 were released 2013 and Nikon D90 was released 2008. That is a 5 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Nikon D7100 2013
Nikon D90 2008

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

Both these cameras have the same sorts of sensor (called "Nikon DX") which means that if you compare these cameras side by side the lenses will also have the same experienced focal length. Neither of the cameras has a Full frame sensor which means that you will get a "crop factor" where the camera's sensor size affect the focal length with a multiplier.

Camera Focal length, 50mm f/1.8 **
Nikon D7100 75 mm
Nikon DX sensor
Crop factor/focal length multiplier by * 1.5
Nikon D90 75 mm
Nikon DX 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)

Resolution

Nikon D7100 has a 24,1 MP (Megapixels) resolution while Nikon D90 has 12,3 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
Nikon D90 12,3 MP
12212224 pixels
4288 x 2848

Nikon D7100 has a 97 % larger resolution than Nikon D90. 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 D7100 has a larger ISO-range than Nikon D90. Nikon D7100 has an ISO range that stretches from 100 to 6400 while Nikon D90 has 200 to 6400.

Camera ISO Range
Nikon D7100 100-6400
Nikon D90 200-6400

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 Nikon D90

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 Nikon D90 can shoot up to 4,5 pictures per seconds.

Camera FPS (Frames per second)
Nikon D7100 6
Nikon D90 4,5

Ability to record movies

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

In this case, both Nikon D7100 and Nikon D90 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 D90 weighs 703 gr (equal to 1.55 lb) which is 4% heavier than Nikon D7100 and its 675 gr (or 1.49 lb).

Camera Weight
Nikon D7100 675 gr
1.49 lb
Nikon D90 703 gr
1.55 lb

Nikon D7100 vs Nikon D90 Specs

Below you will find the complete and detailed technical specs for both Nikon D7100 and Nikon D90, 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
Nikon D90
Name Nikon D7100 Nikon D90
Manufacturer Nikon Nikon
Release Date and Price
Nikon D7100
Nikon D90
Release Year 2013 2008
Release Date 2013-02-21 2008-08-27
MSRP 1199 USD 899 USD
Buy it today
Camera Type
Nikon D7100
Nikon D90
Camera Type DSLR DSLR
Sensor
Nikon D7100
Nikon D90
Sensor Size APS-C (approx 23.7 x 15.5 mm)
Also known as "DX"
APS-C (approx 23.7 x 15.5 mm)
Also known as "DX"
Sensor Type CMOS CMOS
Resolution 6000 x 4000 pixels 4288 x 2848 pixels
Megapixels 24,1 MP 12,3 MP
Image Processor EXPEED 3 Nikon LSI (Large Scale Integration)
Image
Nikon D7100
Nikon D90
ISO Range 100 - 6400 200 - 6400
White Balance Presets 12 12
Custom White Balance Yes Yes
Image Stabilization No No
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Nikon D7100
Nikon D90
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 11
Lens Mount Nikon F

See Compatible Lenses
Nikon F

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
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
Screen & Viewfinder
Nikon D7100
Nikon D90
Articulated LCD Fixed Fixed
Screen size 3,2” 3”
Screen dots 1228800 920000
Touch screen No No
Screen type Wide Viewing Angle TFT-LCD monitor Super Density TFT color LCD with wide-viewing angle
Live view Yes Yes
Viewfinder Type Optical (pentaprism) Optical (pentaprism)
Viewfinder Coverage 100% 96%
Viewfinder Magnification 0.94× 0.96× (0.64× 35mm equiv.)
Viewfinder Resolution N/A N/A
Photography features
Nikon D7100
Nikon D90
Frames per second 6 fps 4,5 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 17 meters
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes Yes
Metering modes Multi
Center Weighted
Spot
Average
Multi
Center Weighted
Spot
Exposure Compensation +/- 5 (at 1/3 EV, 1/2 EV steps) +/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features
Nikon D7100
Nikon D90
Video recording Yes Yes
Video format MPEG4
H.264
MPEG4
Video resolution 1280 x 720
1920 x 1080
1280 x 720
Built-in Microphone Yes Yes
Built-in Speakers Yes Yes
Storage
Nikon D7100
Nikon D90
Memory Card SD/SDHC
SD/SDHC
Connectivity
Nikon D7100
Nikon D90
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 ML-L3 or MC-DC2)
GPS Yes
Optional
Yes
Optional
Body & Dimensions
Nikon D7100
Nikon D90
Enviromentally sealed Yes No
Battery Battery Pack Battery Pack
Battery Details Lithium-Ion EN-EL15 rechargeable battery & charger
Lithium-Ion EN-EL3e rechargeable battery & charger
Battery Life (CIPA) 950 shots 850 shots
Width 136 mm 132 mm
Height 107 mm 103 mm
Depth 76 mm 77 mm
Weight 675 gram 703 gram