Nikon D5500 vs Nikon D5100

This is a full comparison between the cameras Nikon D5500 and Nikon D5100. We compare them by looking at the categories you see below.

Nikon D5500

Nikon D5100

Manufacturing

These cameras are both manufactured by Nikon.

Nikon D5500 were released 2015 and Nikon D5100 was released 2011. That is a 4 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera	Released
Nikon D5500	2015
Nikon D5100	2011

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 D5500	75 mm Nikon DX sensor Crop factor/focal length multiplier by * 1.5
Nikon D5100	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 D5500 has a 24 MP (Megapixels) resolution while Nikon D5100 has 16,2 MP. If we break down this in more detail this is the data behind the numbers:

Camera	Megapixels
Nikon D5500	24 MP 24000000 pixels 6000 x 4000
Nikon D5100	16,2 MP 16084992 pixels 4928 x 3264

Nikon D5500 has a 49 % larger resolution than Nikon D5100. 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 D5500 has a larger ISO-range than Nikon D5100. Nikon D5500 has an ISO range that stretches from 100 to 25600 while Nikon D5100 has 100 to 6400.

Camera	ISO Range
Nikon D5500	100-25600
Nikon D5100	100-6400

Autofocus and lens compatibility

Neither of these two cameras has a built-in autofocus motor. Some lenses, that supports autofocus, do not have an autofocus motor of their own, and often they rely on the cameras providing this autofocus motor but since these two camera models do not have this either it will result in no autofocus is possible.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Nikon D5500
Lens compatibility chart for Nikon D5100

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Nikon D5500 can shoot up to 5 pictures per seconds and Nikon D5100 can shoot up to 4 pictures per seconds.

Camera	FPS (Frames per second)
Nikon D5500	5
Nikon D5100	4

Ability to record movies

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

In this case, both Nikon D5500 and Nikon D5100 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 D5100 weighs 611 gr (equal to 1.35 lb) which is 45% heavier than Nikon D5500 and its 420 gr (or 0.93 lb).

Camera	Weight
Nikon D5500	420 gr 0.93 lb
Nikon D5100	611 gr 1.35 lb