Main
Model
Price
Advantages
launch
Announced
Body type
Camera subcategory
Sensor
Effective pixels
Max resolution
Sensor size
Sensor type
Image ratio w:h
Other resolutions
Sensor photo detectors
Image
ISO
Boosted ISO (minimum)
Boosted ISO (maximum)
White balance presets
Custom white balance
Image stabilization
Uncompressed format
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
Flash modes
Continuous drive
Self-timer
Metering modes
Exposure compensation
AE Bracketing
WB 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
Videography notes
Microphone
Speaker
Optics & Focus
Autofocus
Manual focus
Number of focus points
Lens mount
Digital zoom
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
Remote control
Other features
Orientation sensor
Timelapse recording
GPS
GPS notes
Samples
Videos
Summary
The Nikon D7100 maximum resolution of 6000 x 4000 pixels (24 megapixels) is better than the D70 highest resolution of 3008 x 2000 pixels (6 megapixels). The Nikon D7100 has a wider ISO range of ISO100–6400,Lo-1(ISO50),Hi-1(ISO12,800),Hi-2(ISO25,600) than 200-1600 ISO range of the D70. This ISO numbers let the camera owner to produce good quality pictures in dim light conditions. The Nikon D7100 has more number of white balance presets - 12. It gives the photographer more control over colour.
The Nikon D7100 has tilting display that will let the photographer to take images from any interesting perspective. The Nikon D7100 screen is better as it offers more number of screen dots 1,228,800 in comparison to 130,000 dots of the D70 display. The higher dot count screen is better for reviewing pictures on your camera. The Nikon D7100 offers a very useful live view feature that lets the photographer to use the display as a bigger viewfinder.
The Nikon D7100 is environmentally sealed which means that it will be safe even uncovered if the camera owner are out shooting in the rain or snow. The D70 weighs 679g which is 86g less than the weight of the Nikon D7100. The Nikon D7100 can utilize optional accessory GPS devices. Recording GPS data can be useful if the camera owner is a traveller, to be able to check the image metadata and see exactly where a picture was taken.
Considering the above-mentioned differences the Nikon D7100 becomes the best choice. Check the lowest price on Amazon.