Main
Model
Price
Advantages
launch
Announced
Body type
Camera subcategory
Sensor
Effective pixels
Max resolution
Sensor size
Sensor type
Processor
Image ratio w:h
Other resolutions
Sensor photo detectors
Image
ISO
Boosted ISO (maximum)
White balance presets
Custom white balance
Image stabilization
Uncompressed format
JPEG quality levels
Boosted ISO (minimum)
Photography features
Minimum shutter speed
Maximum shutter speed
Aperture priority
Shutter priority
Manual exposure mode
Subject / scene modes
Built-in flash
Flash range
External flash
Flash modes
Continuous drive
Self-timer
Metering modes
Exposure compensation
WB Bracketing
AE Bracketing
Screen / viewfinder
Articulated LCD
Screen size
Screen dots
Touch screen
Screen type
Live view
Viewfinder type
Viewfinder coverage
Viewfinder magnification
Videography features
Resolutions
File Format
Microphone
Speaker
Videography notes
Optics & Focus
Autofocus
Digital zoom
Manual focus
Number of focus points
Lens mount
Focal length multiplier
Physical
Weight (inc. batteries)
Dimensions
Environmentally sealed
Battery
Battery details
Battery Life (CIPA)
Storage
Storage types
Storage included
Connectivity
USB
HDMI
Wireless
Wireless notes
Remote control
Other features
Orientation sensor
Timelapse recording
GPS
GPS notes
Samples
Videos
Summary
The Nikon D7100 provides more number of focus points than the D3300: 51 vs 11. More focus points means less risk of losing focus lock while tracking a moving subject.
The Nikon D7100 display is better as it has more number of screen dots 1,228,800 in comparison to 921,000 dots of the D3300 screen. The higher dot count display is better for reviewing pictures on your camera.
The Nikon D7100 is weather sealed which means that the camera provides protection from rain, snow, dust and sand. The Nikon D7100 battery life is better in compare to the D3300 battery life. According to CIPA standards the photographer will be able to take 950 shots with the D7100 and only 700 with the D3300. The D3300 weighs 430g that is 335g lighter in comparison with the weight of the Nikon D7100.
The Nikon D7100 has 11 advantages and the D3300 only 1 so the D7100 becomes the best choice. Check the list of the best offers on Amazon.