Bottom line: Which one is better?
Comparing Nikon D5200 vs D3400, the following features are outstanding for Nikon D5200; 2.11% more megapixels (main camera), has flip-out screen, has phase detection autofocus for videos, has stereo microphone input , has a remote control and has a built-in HDR mode.
DESIGN
Flip-out screen; Nikon D5200 has this.
More viewfinder coverage; D3400 and Nikon D5200 have 95%.
Optical viewfinder; D3400 and Nikon D5200 have optical viewfinders.
Hot shoe; D3400 and Nikon D5200 have hot shoes.
System camera; both cameras are system cameras.
OPTICS
In terms of optics comparisons of Nikon D3400 vs D5200, the following are the features of the two cameras;
AF tracking; D3400 and Nikon D5200 have AF tracking.
Sensor size; D3400 and Nikon D5200 have 23.5 ×15.6mm
Maximum light sensitivity; D3400 and Nikon D5200 have 2500 ISO
Phase detection autofocus for photos; D3400 and Nikon D5200 have this.
Megapixels; Nikon D3400 has 24.2MP whereas Nikon D5200 has 24.71MP
Continuous shooting at high resolution; D3400 and Nikon D5200 have 5fps.
VIDEOGRAPHY
Video recording (main camera); D3400 and Nikon D5200 have 1080 × 60fps.
Phase detection autofocus for videos; Nikon D5200 has this.
Phase detection autofocus for movies; D3400 and Nikon D5200 have this feature.
Timelapse function; Nikon D5200 has timelapse function.
24P Cinema mode; D3400 and Nikon D5200 have 24P cinema modes.
AUDIO
Stereo microphone; Nikon D5200 has a stereo microphone
Microphone input; Nikon D5200 has this.
BATTERY
Below is a review of Nikon D5200 vs Nikon D3400;
Battery life (CIPA); Nikon D3400 has 1200shots whereas Nikon D5200 has 500shots.
Removable battery; D3400 and Nikon D5200 have removable batteries.
Battery level indicator; D3400 and Nikon D5200 have Battery level indicators
Rechargeable battery; D3400 and Nikon D5200 have Rechargeable batteries.
KEY FEATURES
External memory slot; Nikon D3400 and Nikon D5200 have external memory slots.
WIFI; Nikon D3400 has WIFI.
Remote control; Nikon D5200 has a remote control
Accelerometer; D3400 and Nikon D5200 have accelerometers
HDMI output; Nikon D3400 and Nikon D5200 have this feature.
USB version; Nikon D3400 and Nikon D5200 have USB versions 2.
By comparing the two cameras, D3400 vs D5200, it is easy to conclude which is better. After an overall review, Nikon D5200 emerges as an ideal camera with superior features.

