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
Boosted ISO (maximum)
White balance presets
Custom white balance
Image stabilization
Uncompressed format
ISO
JPEG quality levels
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
Continuous drive
Self-timer
Metering modes
Exposure compensation
WB Bracketing
Flash modes
AE Bracketing
Screen / viewfinder
Articulated LCD
Screen size
Screen dots
Touch screen
Live view
Viewfinder type
Viewfinder coverage
Viewfinder resolution
Screen type
Videography features
Resolutions
File Format
Microphone
Speaker
Optics & Focus
Focal length (equiv.)
Optical zoom
Maximum aperture
Autofocus
Digital zoom
Manual focus
Normal focus range
Macro focus range
Number of focus points
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 Coolpix P7800 highest resolution of 4000 x 3000 pixels (12 megapixels) is better in comparison with the Nikon Coolpix P7100 highest resolution of 3648 x 2736 pixels (10 megapixels). The Nikon Coolpix P7800 offers more presets of white balance - 7. It gives you more control over colour.
The Nikon Coolpix P7800 is produced with swiveling LCD which will allow you to make images from any interesting perspective.
The Coolpix P7100 weighs 395g which is 4g less in comparison with the weight of the Nikon Coolpix P7800. The Nikon Coolpix P7800 can utilize optional accessory GPS devices. Recording GPS data can be useful if the camera owner is a traveller, to be able to go into the photo metadata and find out exactly where a photo was shot.
Considering the above-mentioned differences the Nikon Coolpix P7800 will be the best buy. Get the lowest price on Amazon.